Operation Manual
Type MPT5838/9 Series Solid-State Modulators
Whilst e2v technologies has taken care to ensure the accuracy of the information contained herein it accepts no responsibility for the consequences of any use thereof
and also reserves the right to change the specification of goods without notice. e2v technologies accepts no liability beyond the set out in its standard conditions of sale in
respect of infringement of third party patents arising from the use of tubes or other devices in accordance with information contained herein.
e2v technologies (uk) limited, Waterhouse Lane, Chelmsford, Essex CM1 2QU United Kingdom Holding Company: e2v technologies plc
Telephone: +44 (0)1245 493493 Facsimile: +44 (0)1245 492492
Contact e2v by e-mail: enquiries@e2v.com or visit www.e2v.com for global sales and operations centres.
© e2v technologies (uk) limited 2015
Template: DF764388A-3
DAS708229AA Version 7, February 2015
119280
Safety Information
The following warnings and precautions are for your safety and prevention of injury. Read them carefully and
observe at all times when installing or operating the AMM Modulator, High Voltage Power Supply or Control Unit.
Hazard warning signs, as defined in BS5378 (Safety Signs and Colours), are used on the equipment to highlight
any possible hazards.
The MPT5838/9 Series Modulator System must only be operated by qualified personnel who have read this
manual and are familiar with the operation, hazards and application of the High Voltage Power Supply, the
Modulator and the Control System.
The Modulator, High Voltage Power Supply and Control System should only be serviced by factory qualified
personnel.
Earthing
Ensure all the correct required earthing has been connected before applying any AC power. Proper
earthing for the modulator and High Voltage Power Supply unit is required to reduce the risk of electric
shock and to comply with relevant safety requirements. Earthing requirements are contained within this
manual.
Risk Of Electric Shock
High voltages of up to 65 kV DC are present within the modulator and high voltage power supply. The
modulator also has exposed terminals capable of being pulsed to 65 kV.
Equipment must be installed so that personnel cannot come into contact with high voltage circuits. All
high voltage circuits and terminals must be enclosed, and fail-safe interlock switches must be fitted to
disconnect the primary power supply and discharge all high voltage capacitors and other stored
charges before allowing access. Interlock switches must not be bypassed to allow operation with
access doors open.
Use extreme caution when disconnecting the high voltage cable from the modulator. A total of 10
minutes must be allowed after removing the power supply 3-phase supply, before removing any end of
the cable to allow all voltages to discharge. After this time, the modulator end must be removed first,
and then earthed. Then the power supply end can be removed.
Ensure all covers are in place and securely fastened before applying any AC power.
Power Supplies To The System
External overload protection on the 3-phase supply must be provided by the user.
Always replace fuses with the same type and voltage/current rating.
Use extreme caution when connecting input AC power, and apply only the input voltages specified on
the rating labels.
Heavy Equipment
The supplied equipment is heavy. The modulators and high voltage power supplies are marked with the
unit weight. Observe your local health and safety regulations when lifting. Further details on lifting
locations are contained within this manual.
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Toxic Material
The modulator is a factory-sealed unit, containing hydrocarbon mineral oil (Shell 148). The user must
not loosen or remove any of the unit’s fixings or seals as leakage could occur and performance
affected. Consult e2v technologies for details regarding the disposal of old or damaged modulators,
high voltage power supplies or control units.
Risk of X-Ray Radiation
All high voltage devices can produce X-rays during operation and may require shielding. The X-ray
radiation is usually reduced to a safe level by enclosing the equipment within steel or lead panels.
Users and equipment manufacturers must check the radiation level under their maximum operating
conditions.
High voltage magnetrons emit a significant intensity of X-rays not only from the cathode sidearm, but
also from the output waveguide. These rays can constitute a health hazard unless adequate shielding
for X-ray radiation is provided. This is a characteristic of all magnetrons and the X-rays emitted
correspond to a voltage much higher than that of the anode.
RF Radiation
Personnel must not be exposed to excessive RF radiation. All RF connectors must be correctly fitted
before operation so that no leakage of RF energy can occur and the RF output must be coupled
efficiently to the load. It is particularly dangerous to look into open waveguide or coaxial feeders while
the device is energised. Screening of the cathode sidearm of high power magnetrons may be
necessary.
Electrostatic Sensitive Devices
Damage to components may occur if static handling procedures are not carried out.
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Contact Information
UK
e2v technologies limited
Waterhouse Lane
Chelmsford
Essex CM1 2QU
Telephone: +44 (0)1245 493493
Facsimile: +44 (0)1245 492492
MPT5838/9 Modulator e-mail address: modulator@e2v.com
France
e2v technologies sas
Bat. 16 BUROSPACE
F-91572 BIÈVRES Cedex
Telephone: (331) 6019 5500
Facsimile: (331) 6019 5529
USA
e2v technologies inc.
520 White Plains Road, Suite 450
Tarrytown NY 10591
Telephone: (914) 592-6050
Facsimile: (914) 592-5148
www.e2v.com
© e2v technologies (uk) ltd 2010
A Limited Company Registered in England No. 432014
Registered Office: 106 Waterhouse Lane, Chelmsford CM1 2QU, UK
Holding Company: e2v technologies plc
This document is supplied by e2v technologies (uk) ltd on the express understanding that it is to be
treated as confidential and that it may not be copied, used or disclosed to others in whole or in part for
any purpose except as authorised in writing by e2v technologies (uk) ltd.
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Contents
Safety Information ........................................................................................................................................... 2
Contact Information ......................................................................................................................................... 4
Contents
5
List Of Figures.................................................................................................................................................. 8
Chapter 1
Introduction
Manual Scope .............................................................................................................................................. 9
Related Documents ..................................................................................................................................... 9
Location Of Serial Numbers ...................................................................................................................... 10
MPT5838/9 Series Modulator ............................................................................................................... 10
MPT5838/9 CRx Series Control Unit.................................................................................................... 10
MPT5838/9 PSUD HV Power Supply................................................................................................... 10
Chapter 2
System Contents
Packaging/What Is Supplied...................................................................................................................... 13
Storage ...................................................................................................................................................... 13
Unpacking And Lifting the Modulator......................................................................................................... 14
Unpacking And Lifting the HV Power Supply ............................................................................................ 16
Other Required Equipment ........................................................................................................................ 17
Chapter 3
Installation
Connection Overview - Block Diagram ...................................................................................................... 18
Required Services ..................................................................................................................................... 19
Electrical Services ................................................................................................................................ 19
Cooling Water Services ........................................................................................................................ 19
Mounting - Modulator ................................................................................................................................. 20
Mounting - HV PSU ................................................................................................................................... 22
Mounting - Control Unit .............................................................................................................................. 23
Earthing ..................................................................................................................................................... 24
Water and Cooling ..................................................................................................................................... 25
Modulator Water Cooling ...................................................................................................................... 25
HV PSU Water ...................................................................................................................................... 25
HV PSU Cooling Fans .......................................................................................................................... 25
Control Unit Fans.................................................................................................................................. 25
Power - HV PSU 3-Phase ......................................................................................................................... 26
Power - Control Unit 240 V AC .................................................................................................................. 27
Power - Oil Pump 240 V AC ...................................................................................................................... 27
HV Cable - Power Supply to Modulator ..................................................................................................... 28
Greasing the HV Cable......................................................................................................................... 28
Cable - Modulator To Magnetron............................................................................................................... 30
Control and Monitoring Connections ......................................................................................................... 31
Fibre-Optic Connections ............................................................................................................................ 32
User Interface Lead ................................................................................................................................... 33
HV PSU Interlock Connection. .................................................................................................................. 33
Fibre-Optic Connection Layout .................................................................................................................. 34
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Chapter 4
System Operation Modes
System Operation Modes .......................................................................................................................... 35
BNC / Fibre-Optic Operation ................................................................................................................ 35
Control Interface ................................................................................................................................... 35
Magnetron Peak Current Control ......................................................................................................... 36
Manual/Automatic Run-Up ................................................................................................................... 36
Miscellaneous Configurable Controls ................................................................................................... 36
Available Configurations ............................................................................................................................ 37
Other configurations are available on request.Changing The Control Unit Configuration ........................ 38
Changing The Control Unit Configuration ................................................................................................. 39
Selecting the CONFIG Switch Setting .................................................................................................. 40
Selecting the SERIAL Switch Setting ................................................................................................... 40
Chapter 5
System Operation
Final Checks .............................................................................................................................................. 42
Description of Operation ............................................................................................................................ 42
Operation State Description ...................................................................................................................... 43
‘Off’ State .............................................................................................................................................. 43
‘Warm-up’ State .................................................................................................................................... 43
‘Warm Standby’ State ........................................................................................................................... 43
‘Hot Standby’ State ............................................................................................................................... 43
‘HV On’ State ........................................................................................................................................ 43
‘Pulsing’ State ....................................................................................................................................... 43
‘Fault’ State ........................................................................................................................................... 43
Operation State Transitioning .................................................................................................................... 44
Electromagnet Current .............................................................................................................................. 45
Initial Start-Up Guide ................................................................................................................................. 46
Start-up States - Expected Screen Shots .................................................................................................. 47
Expected Operation ................................................................................................................................... 50
Pulse Width and Pulse Repetition Frequency (PRF) ................................................................................ 51
Heater Control ........................................................................................................................................... 51
Electromagnet Current Supply .................................................................................................................. 51
Using the User Interface – PL5 ................................................................................................................. 52
User Interface Detailed Descriptions ......................................................................................................... 52
Digital Control Inputs ............................................................................................................................ 52
Level Control Inputs.............................................................................................................................. 53
Analogue Control Input ......................................................................................................................... 53
Power Supply. ...................................................................................................................................... 53
Digital Fault Indicator Outputs .............................................................................................................. 53
Digital Status Indicator Output .............................................................................................................. 55
Using The Fibre-Optic Interface ................................................................................................................ 56
Control Unit BNC Descriptions .................................................................................................................. 57
System Shutdown Guide ........................................................................................................................... 58
In an Emergency........................................................................................................................................ 58
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Chapter 6
PC Communication Software
Introduction ................................................................................................................................................ 59
How To Obtain ........................................................................................................................................... 59
Installing ..................................................................................................................................................... 59
Communication Lead ................................................................................................................................. 60
Using The Program.................................................................................................................................... 61
‘Status’ Display Box .............................................................................................................................. 61
‘Main Faults’ Display Box ..................................................................................................................... 62
‘Warnings’ Display Box ......................................................................................................................... 63
‘Masked Faults’ Display Box ................................................................................................................ 63
Control Buttons .......................................................................................................................................... 64
‘Off’ Button ............................................................................................................................................ 64
‘Warm Standby’ Button ......................................................................................................................... 64
‘Hot Standby’ Button ............................................................................................................................. 64
‘HV PSU Enable’ Button ....................................................................................................................... 64
‘Drive Enable/Inhibit’ Button ................................................................................................................. 64
‘Remote / Local’ Button ........................................................................................................................ 64
Modulator Parameters Tab ........................................................................................................................ 65
Heater Voltage (V) ................................................................................................................................ 65
Heater Current (A) ................................................................................................................................ 65
Electromagnet Current (A).................................................................................................................... 65
HV PSU Set Level (kV)......................................................................................................................... 65
HV PSU Voltage (kV) ........................................................................................................................... 65
HV PSU Current (mA) .......................................................................................................................... 65
HV PSU Mean Power (kW) .................................................................................................................. 65
HV PSU Temperature (°C) ................................................................................................................... 65
Pulse Amplitude Drive (s) ................................................................................................................... 65
Elapsed Hours Tab .................................................................................................................................... 66
Control Software Revision And Build......................................................................................................... 66
Modulator Details ....................................................................................................................................... 66
AMM System Fault and Status Classifications .......................................................................................... 67
Uploading Software To The Control Unit ................................................................................................... 69
Uploading a New Control Unit Operating System ..................................................................................... 69
Restoring a Control Unit Operating System .............................................................................................. 70
Chapter 7
Remote Operation
Data Format ............................................................................................................................................... 71
Data Rate ................................................................................................................................................... 71
Generalised Message Format ................................................................................................................... 71
Command Message Format ...................................................................................................................... 72
Response Message Format ...................................................................................................................... 72
Message Timing ........................................................................................................................................ 72
Summary Of Command Messages ........................................................................................................... 73
Examples of Command and Response Messages ................................................................................... 76
User Commands (no return of data) .......................................................................................................... 76
User Status / Data Request (Command Message Requesting Data) ....................................................... 76
Universal Command Message Requesting Data ...................................................................................... 76
Universal Command Message Requesting Status .................................................................................... 77
Command Message Requesting A Long Data String................................................................................ 78
Command Message Passing a Parameter ................................................................................................ 79
Response to an Invalid Command Message ............................................................................................. 79
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Appendix A. User Interface Pin Designations. ........................................................................................... 80
Appendix B. HV PSU Pin Designations. ........................................................... Error! Bookmark not defined.
Appendix C. RS 485 Interface Pin Designations. ............................................. Error! Bookmark not defined.
Appendix D. Oil Pump/Pressure Pin Designations.......................................... Error! Bookmark not defined.
Appendix E. LV PSU Pin Designations. ............................................................ Error! Bookmark not defined.
Appendix F. Heater Pin Designations. .............................................................. Error! Bookmark not defined.
Appendix G. BNC Connection Layout. .............................................................. Error! Bookmark not defined.
Appendix H. Product Compliance (EMC and Safety). ..................................... Error! Bookmark not defined.
Safety.................................................................................................................................................... 85
EMC ...................................................................................................................................................... 85
List of Figures
Figure 1 - Quick Start Guide, Page 1 ............................................................................................................................. 11
Figure 2 - Quick Start Guide, Page 2 ............................................................................................................................. 12
Figure 3 - Modulator Lifting Locations.......................................................................................................................... 14
Figure 4 - Modulator Lifting Locations.......................................................................................................................... 15
Figure 5 - HV PSU Lifting Locations.............................................................................................................................. 16
Figure 6 - System Block Diagram .................................................................................................................................. 18
Figure 7 - Modulator Mounting Washer ........................................................................................................................ 20
Figure 8 - Modulator Feet Layout Dimensions ............................................................................................................. 21
Figure 9 - Rear panel view of HV PSU ........................................................................................................................... 22
Figure 10 - Front panel view of Control Unit ................................................................................................................ 23
Figure 11 - System Earthing .......................................................................................................................................... 24
Figure 12 - HV Cable Lengths ........................................................................................................................................ 28
Figure 13 - HV Cable Greasing ...................................................................................................................................... 29
Figure 14 - Control Unit Fibre-Optic Connection Layout............................................................................................. 34
Figure 15 - Modulator Fibre Optic Layout ..................................................................................................................... 34
Figure 16 - Main Software Operating States ................................................................................................................. 42
Figure 17 - Start-up Guide .............................................................................................................................................. 46
Figure 18 - Example User Interface Circuits ................................................................................................................. 55
Figure 19 - Control Using Fibre-Optics. ........................................................................................................................ 56
Figure 20 - Shutdown Guide .......................................................................................................................................... 58
Figure 21 - Communication Lead Wiring (Example 1) ................................................................................................. 60
Figure 22 - Communication Lead Wiring (Example 2) ................................................................................................. 60
Figure 23 - Typical AMCON screen ............................................................................................................................... 61
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CHAPTER 1 - INTRODUCTION
Thank you for purchasing an e2v solid-state modulator, high voltage power supply or control unit.
Before installing or using the modulator system, or any component, e2v technologies recommend that you
familiarise yourself with each unit, its operation and features, by reading this manual.
The MPT5838 and MPT5839 modulator series is a range of fully integrated, compact, direct switching, high voltage
solid-state modulator systems. They are specifically designed to drive the e2v technologies range of linac
magnetrons, and utilise a patented AMM solid-state modulator technology.
The system is constructed of three sub-assemblies that are designed to be mounted in a variety of orientations.
Manual Scope
This manual will provide all necessary information to allow you to:
•
Unpack the system.
•
Lift and mount the system.
•
Make all necessary interconnections.
•
Operate the system.
•
Operate the AMCON PC Communications software.
Related Documents
A1A-MPT5838_SER
A1A-MPT5839_SER
Low Power Modulator (MPT5838) Data Sheet
High Power Modulator (MPT5839) Data Sheet
Note: Modulator Data sheets are available from the e2v website. www.e2v.com
DAS563000AN
DAS563000BN
DAS563003AN
DAS563006AN/BN
High Power Specification
Generic Low Power System Specification
HV PSU Specification
Control Unit Specification
DAS563001BB/DB
DAS563001AB
DAS563003AB
DAS563006AA/BA
Low Power Modulator Outline Drawing
High Power Modulator Outline Drawing
HV PSU Outline Drawing
Control Unit Assembly Drawing
DAS706043AN
DAS704892AN
AMM Operating System Specification
Serial Interface Specification
EDD707033AA
EDD707474AA
EDD708230AA
Using the AMM Control Software – AMCON
Using the Operating System Update Utility – OSUPDATE
Modulator Configuration Data for AMMOS
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Location of Serial Numbers
MPT5838/9 Series Modulator
Modulator serial number label located
on terminal box near the output end
of the modulator.
The Modulator accepts a DC High Voltage and
control inputs to produce a pulsed HV output
representative of the control trigger input.
The unit also contains the Magnetron heater
filament power supply, and end of pulse discharge
elements.
Integral cooling of the modulator insulating oil is
included when suitable cooling water is applied.
MPT5838/9 CRx Series Control Unit
Control Unit serial number label is
located externally.
The Controller is the interface between the
User, Modulator and HV PSU. It is
responsible to regulating the Magnetron
operating current, as well as dealing with
any fault conditions that may occur.
A user interface allows control and
monitoring of the connected sub-system
MPT5838/9 PSUD HV Power Supply
High Voltage Power Supply label is
located on the lifting flange near the
HV output connector.
The HV PSU generates the DC high voltages the
modulator requires to produce the pulse power.
It is internally regulated with level control derived
from the Controller.
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Quick Start Guide
This guide should be read in conjunction with the detailed information contained within this manual.
Figure 1 - Quick Start Guide, Page 1
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Quick Start Guide – Continued
Figure 2 - Quick Start Guide, Page 2
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CHAPTER 2 - SYSTEM CONTENTS
Packaging/What Is Supplied
Depending on what has been ordered, each component will be supplied within its own packing case or
container.
Before starting, check you have been supplied with all the necessary items.
Component
e2v Part Number
Notes
Solid-State Modulator
Low Power
MPT5838LPF
MPT5838RLPF
-
Solid-State Modulator
High Power
MPT5839HPF
-
High Voltage Power
Supply
MPT5838/9PSUD
Designed to operate MPT5838 and
MPT5839 modulators.
Control Unit
MPT5838/9CRx
MPT5838/9RCRx
The final letter in the part number
depends on the ordered configuration.
High Voltage Cable
MPT5838/9HVCx
The final letter in the part number
depends on the cable length.
Interconnection Cable Kit
MPT5838/9CKx
The final letter in the part number
depends on the cable lengths.
Storage
Both the modulator and high voltage power supply must be stored in the horizontal position, in its supplied
packing case.
The storage temperature range for all components is -25 C to +70 C.
The storage humidity range for all components is 20% to 95% (condensing).
Each item must be left at room temperature for at least 24 hours prior to use.
Retain packing cases for future use.
Always use a pallet lifting trolley to move the modulator or high voltage power supply packing cases.
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Unpacking and Lifting the Modulator
Although general information is contained in this document, local safety regulations must also be complied
with. For more information contact the factory
Warning: The modulator weighs 102 kg. Suitable lifting equipment will be required to lift and position the
modulator for installation.
Two slings will be required, each rated for 200 kg, of lengths 2 metres and 3 metres.
1.
To access the modulator, remove the screws retaining the packing case lid.
2.
Lift the lid clear of the modulator.
3.
Remove the four M12 bolts (fitted with Nyloc nuts) securing the modulator to the transportation plate.
4.
Attach two slings around the modulator body in the locations shown below.
The slings must be fitted around the body of the modulator, and not around the heat exchanger and oil
pump assembly.
Failure to observe this may results in damage to the unit.
5.
Lift the modulator clear of the packing case.
Note: The modulator centre of gravity is as shown in the diagram below.
Figure 3 - Modulator Lifting Locations
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Figure 4 - Modulator Lifting Locations
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Unpacking and Lifting the HV Power Supply
Warning: The high voltage power supply weighs 65 kg (70 kg when a control unit is fitted). Suitable lifting
equipment will be required to lift and position the supply for installation.
1.
To access the power supply, remove the screws retaining the top lid of the wooden packing case.
2.
Recommended lifting points are located on the two side extension plates containing the two linking bars.
One hole of 20 mm diameter is available on each side plate for location of suitable lifting equipment.
3.
A suitable lifting bar (part number PMA2288B) is available from e2v technologies as an optional item
Use this lifting bar or other suitably rated lifting device to move or lift the HV PSU.
4.
DO NOT remove the two bars that pass between each side extension plate, as this will degrade the
structural integrity of the unit.
Figure 5 - HV PSU Lifting Locations
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Other Required Equipment
Electromagnet Shunt
In order for the control system to accurately read the set current of the
magnetron electromagnet supply, a suitable shunt is required. This should
be connected in the earth side, usually the negative output of the supply,
which should also be earthed.
The centre pin connection of the Electromagnet Input (SK4b) must be the
positive side of the shunt.
The shunt ratio must be 50 A = 100 mV. The shunt used must be suitably
rated for the maximum current output of the electromagnet current supply
being used.
Electromagnet Power Supply
The requirements of the electromagnet power supply will vary from type to
type. As a recommendation, the following power supplies can be used:
Magnetron Electromagnet
Type
For MPT5839 HPF Systems:
M4121 type magnetron
electromagnet
For MPT5838 LPF Systems:
MG6053 or MG6062 type
magnetron electromagnet
Recommended Power Supply
(as an example only)
Glassman LV55-55
55 V, 55 A Capability
Glassman LV33-33
33 V, 33 A Capability
Magnetron
The magnetron required is application dependant. Contact e2v technologies
to discuss your requirements.
Magnetron Electromagnet
The electromagnet type will depend on the magnetron selection. Contact
e2v technologies to discuss your requirements.
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CHAPTER 3 - INSTALLATION
Connection Overview - Block Diagram
The following block diagram shows how the three sub-assemblies connect together. Use this diagram and
the detailed description contained within this chapter to install the system.
Note: The HV PSU Interlock closing mechanisms must have sufficiently low impedance for reliable contact
at low currents. The interlock connection switching current is approximately 1 mA.
Figure 6 - System Block Diagram
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Required Services
Electrical Services
Control Unit
240 V AC (220 - 250 V AC)
Single-Phase
3.15 A max 50/60 Hz
Line, neutral and earth connected via
an IEC320 compatible inlet on the
Control Unit.
Oil Circulation Pump
240 V AC (220 - 250 V AC)
Single-Phase
1.0 A max 50/60 Hz
Line neutral and earth connected via an
IEC320 compatible cable inlet. A 1 A
fused outlet is provided on HV PSU.
High Voltage
Power Supply
3-phase 400 V AC
(360 - 440 V AC) 47 – 63 Hz
Refer to ‘Chapter 3. Power - HV
PSU 3 Phase’ for details on
suitable 3 Phase breakers.
3 phases neutral and earth connected
via studs or screws compatible with M5
ring terminals on the MPT5838/9 PSUD
HV Power Supply.
(studs on revision H or earlier, screws
on revision J onwards)
Cooling Water Services
Typical operation: 5 litres per minute minimum. Limited by
maximum water pressure.
Maximum temperature: 45 C
Pressure drop across modulator water circuit: 15 psi max.
Maximum water pressure: 45 psi when connected in series
with HV PSU.
Modulator
Maximum power and/or long duration operation: 8 litres per
minute minimum. Limited by maximum water pressure.
Maximum temperature: 45 C
Connection is via
½”-14 BSP male
thread, water
fittings on the heat
exchanger fitted to
the modulator.
Pressure drop across modulator water circuit: 15 psi max.
Maximum water pressure: 45 psi when connected in series
with HV PSU.
Typical operation: 5 litres per minute minimum. Limited by
maximum water pressure.
Maximum temperature: 45 C
Pressure drop across HV PSU water circuit: 15 psi max.
High
Voltage
Power
Supply
Maximum water pressure: 45 psi
Maximum power and/or long duration operation: 8 litres per
minute minimum. Limited by maximum water pressure.
Maximum temperature: 45 C
Connection is via
¼-inch female BSP
thread, water
fittings on the rear
of the HV power
supply.
Pressure drop across HV PSU water circuit: 15 psi max.
Maximum water pressure: 45 psi
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Mounting - Modulator
The modulator has four feet to be used for mounting. The unit will have been supplied with four metal plates,
fixed to these feet.
The plates consist of two holes. One hole is threaded M12 x 1.75 and can be used for optional location pins.
The other hole is plain, intended for modulator mounting purposes. It is permissible to use all eight holes for
mounting purposes.
Use four M12 bolts, of minimum length 50 mm (2 inch), fitted through the plain holes in the four feet, to
secure the modulator.
A load-spreading washer must be used under the head of the bolt. Details of which are shown below. The
recommended material for the washer is stainless steel.
Figure 7 - Modulator Mounting Washer
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The following drawing details the modulator mounting feet dimensions. This drawing should be read in
conjunction with the modulator assembly drawing DAS563001AB/BB/CB/DB.
Figure 8 - Modulator Feet Layout Dimensions
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Mounting - HV PSU
The high voltage power supply is fitted with two side flanges, each with four slots to allow fixing to a support
frame. There are also two location holes on the rear of the supply for support pegs.
If the application does not involve the supply being subjected to rotation or movement, then it is sufficient to
support the weight of the supply on its base, and fix it in place using 8 off M6 screws through the 8 mounting
slots on the two side mounting flanges. The length of these screws is dependent on the users supporting
frame.
If the application involves the supply being subjected to rotation or movement, then 2 additional locating pins
should be used in the mounting points on the rear panel in addition to the M6 screws through the 8 mounting
slots on the mounting flange. Note: The pins must not protrude more than 30 mm into the power supply, as
measured from the power supply metal panel face.
Figure 9 - Rear panel view of HV PSU
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Mounting - Control Unit
The control unit is designed to fit into the empty slot in the top of the high voltage power supply. It can be
inserted before or after the high voltage power supply has been mounted in its operational position, provided
there is sufficient access.
When inserting the control unit into the high voltage power supply chassis, great care must be taken not to
damage any part of the control unit circuitry or cables on the mounting flanges of the high voltage power
supply.
Once inserted into the high voltage power supply chassis, the control unit should be secured using four M4 x
16 mm maximum screws, each fitted with a shake-proof and flat M4 washer.
Figure 10 - Front Panel View of Control Unit
© e2v technologies (uk) limited 2015
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DAS708229AA, Version 7, page 23
Earthing
The main earthing point for the modulator is on the mounting flange at the output end. Connect this to the
main system earthing point.
The critical earth paths are:
Modulator to Magnetron
Keep as short as possible, 12 inches long maximum. Use 3-inch x
1
/16-inch (minimum) wide copper plate as the connection between the modulator flange and the magnetron
anode flange. This is the main pulse current return for the magnetron.
Modulator to HV PSU
Length of connection should ideally be no longer than the HV cable.
Use 1-inch x 1/8-inch (minimum) wide copper strip for connecting. This carries the capacitor charging return
currents.
Modulator Flange to End Cover
(minimum) cable.
Bond the fibre-optic end cover to the flange using 30/0.25 mm
Figure 11 - System Earthing
Notes:
A. HV PSU earth fixing is an M5 stud.
B. HV PSU 3-phase earth fixing is compatible with an M5 ring terminal.
C. Modulator End Cover has an M5 bush fitted for use with an M5 bolt.
D. Modulator flange fixing in an M6 nut.
© e2v technologies (uk) limited 2015
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DAS708229AA, Version 7, page 24
Water and Cooling
A flow switch or other form of interlock should be fitted to all water circuits, so that power is prevented from
being applied to the modulator system until water flow has been established and that power is removed from
the system if water flow fails. This should apply to the modulator, high voltage power supply, magnetron and
magnetron electromagnet.
Typically, the modulator and HV PSU are connected in series for cooling water. The flow rates stated are for
operation at the full High Power conditions. De-rating information is dependent on specific operating
conditions. Information is available on request.
Modulator Water Cooling
The water-cooling for the modulator shall be connected to the heat exchanger inlet and outlet using suitable
user supplied fittings (½”-14 BSP female thread). 4 psi pressure drop at 8 litres/minute.
Refer to the Required Services - Cooling Water Services table within this chapter for full details.
The direction of flow is marked on the heat exchanger mounting plate, labelled as follows:
HV PSU Water
The water-cooling for the HV power supply shall be connected to the inlet and outlet on the rear panel of the
HV power supply using suitable fittings (¼ inch male BSP). 15 psi pressure drop at 8 litres/minute.
Refer to the Required Services - Cooling Water Services table within this chapter for full details.
The direction of flow is marked on the rear panel of the HV power supply, labelled as follows:
IN
OUT
2 GAL. PER MIN
15 PSI MAX
HV PSU Cooling Fans
The high voltage power supply is fitted with three 92 mm diameter fans on the rear panel. Any mounting
arrangement close to a solid panel must allow a distance of 150 mm between it and the rear panel
containing the fans.
This distance can be reduced to 40 mm if the adjacent panel has an area equivalent to the three cooling fans
removed, so that the air flow is not impaired.
Control Unit Fans
The control unit is fitted with a single 80 mm diameter fans on the rear panel. This matches a cut-out in the
high voltage power supply case. The same clearance distances should be maintained as for the high voltage
power supply.
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DAS708229AA, Version 7, page 25
Power - HV PSU 3-Phase
Warning - High Voltage: Ensure that all power supplies to the equipment are turned off and isolated before
any work on the HV power supply mains wiring is undertaken.
On the MPT5838/9 PSUD high voltage power supply, the power connections are accessible after removing
the safety cover that is secured by two screws.
HV PSU units of revision H or earlier have studs with 10/32 UNF threads. The 3-phase and neutral studs are
0.350  0.5 inch long, and the earth stud is 0.550  0.5 inch long. All will accept M5 size ring terminals.
HV PSU units of revision J onwards use a terminal strip arrangement that has screws for each of the power
inputs that accept M5 size ring terminals.
The high voltage power supply does not contain any fuses for the 3-phase supply, and as such the user
must connect power via a circuit breaker.
To maintain UL ratings, use only a 16 A breaker type ABB part number S273-K16A.
If using an MPT5839HPF High Power Modulator, use a 32A breaker type ABB part number S273-K32A.
The HV PSU Interlock connection (labelled INT’LK) must be shorted to allow the HV to be enabled.
Interlock closing mechanisms must have sufficiently low impedance for reliable contact at low currents.
The interlock connection switching current is approximately 1mA.
Always ensure any protective covers removed for access are replaced.
High Voltage Power Supply Power Connections
Phase
Connection Stud on High
Voltage Power Supply
Cable Rating
Phase 1
A
Minimum 440 V AC, 32 A AC, 50/60 Hz
Phase 2
B
Minimum 440 V AC, 32 A AC, 50/60 Hz
Phase 3
C
Minimum 440 V AC, 32 A AC, 50/60 Hz
Neutral
N
Minimum 440 V AC, 32 A AC, 50/60 Hz
Earth
Earth
Minimum 440 V AC, 32 A AC, 50/60 Hz
© e2v technologies (uk) limited 2015
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DAS708229AA, Version 7, page 26
Power - Control Unit 240 V AC
Warning - High Voltage: Ensure that all power supplies to the equipment are turned off and
isolated before any work on the control unit mains wiring is undertaken.
The control unit requires connections to single-phase power, neutral and earth lines. Connections are via an
IEC inlet, fitted with a 3.15 A, Anti-surge (T) HBC, S505 Bussmann Fuse.
The cable used shall be rated for operation at a minimum of 250 V AC and 3 A AC and comply with any local
statutory requirements. Connect suitably rated cables to an IEC cable mounted outlet and connect the other
end of these cables to the equipment mains supply via 3 A fuses or a 3 A circuit breaker. Provision should be
made to isolate the control unit from the mains to allow for maintenance.
Power - Oil Pump 240 V AC
Warning - High Voltage: Ensure that all power supplies to the equipment are turned off and
isolated before any work on the modulator oil pump mains wiring is undertaken.
The modulator oil pump requires connections to 240 V AC single-phase power, neutral and earth lines.
Connections are via an IEC cable mounted inlet on a cable fitted to the oil pump.
The cable used shall be rated for operation at a minimum of 250 V AC and 1 A AC and comply with any local
statutory requirements. Connect suitably rated cables to an IEC cable mounted outlet and connect the other
end of these cables to the equipment mains supply via 1 A fuses or a 1 A circuit breaker. Provision should be
made to isolate the Modulator Oil Pump from the mains to allow for maintenance.
A suitable IEC outlet is provided on the rear panel of the HV power supply, which incorporates a 1 A, 1¼ inch, slow blow fuse. This is derived from phase C of the 3-phase input.
The IEC outlet and fuse are labelled as follows:
OUTPUT 50/60Hz
240VAC 1A
OIL PUMP
250V
1A SB
Ensure that any covers that were removed to allow access are replaced.
© e2v technologies (uk) limited 2015
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DAS708229AA, Version 7, page 27
HV Cable - Power Supply to Modulator
Warning - High Voltage
Ensure that all power supplies to the equipment are turned off and isolated. A total of 10
minutes must be allowed after removing the power supply 3-phase supply before any further
work is carried out.
The modulator end of the HV cable should be disconnected and earthed first followed by the
power supply end of the cable.
Several versions of this cable that vary in length are available from e2v technologies. Consult the factory for
options.
Greasing the HV Cable
It is essential that the HV cable is cleaned and then has silicon grease applied, each time it is
removed, disturbed or installed.
Failure to carry out the following procedure may reduce the life of the equipment or cause
equipment failure.
Verify that the cable to be installed has the correct connector lengths. Note: The ends of the cables are
brass fittings.
Figure 12 - HV Cable Lengths
It is important to ensure that the cable is free from debris and old grease - wipe any grease off the cable
using a lint-free cloth.
The cable should then be inserted into the connection and removed, wiping off any grease each time. This
process is repeated three or four times to remove old grease from the receptor, and prevent the build-up of
grease. Particular attention must be given to cleaning the brass end connections, the 4 mm pin and hole
respectively at each end of the cable, which should be grease-free.
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DAS708229AA, Version 7, page 28
Dow Corning DC-4 silicone grease is recommended. Each end of the cable should be addressed in the
following procedure. Wear disposable protective vinyl gloves for the greasing operation.
Apply nine spots of grease, approx 1 cm in diameter, evenly along the circular orange insulator. Apply on
opposite sides of the insulation.
Figure 13 - HV Cable Greasing
Smear the spots of grease into a light coating of grease along the length of the orange insulator and on the
sides of the brass connectors at the ends of the cable. Avoid the electrical mating 4 mm pin and hole.
Slowly insert the cable end into the receptor, allowing any trapped air to escape. It is important not to remove
and reseat the cable as this can force grease to the bottom of the connector and impair the connection.
When the cable is fully inserted, you will be able to engage the threads of the locking nut without additional
downward pressure on the cable. If you are unable to do so, this indicates there is too much grease in the
receptor, or beyond the brass connector, which is preventing it from seating properly. Remove the cable,
clean off the connector repeating this procedure (remove, clean, re-insert, remove, clean, re-grease).
Tighten the locking nut on the connector.
© e2v technologies (uk) limited 2015
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DAS708229AA, Version 7, page 29
Cable - Modulator to Magnetron
Warning - High Voltage: The output from the modulator has the capability of being pulsed to 65
kV. Ensure all equipment is correctly turned off and the output terminals earthed before attempting
any connections to these terminals.
The modulator is terminated with M5 threaded connections. Use a maximum length screw of 8 mm.
The two output terminals are labelled ‘H’ for the magnetron heater connection, and ‘C’ for the magnetron
cathode connection.
The connection to the magnetron will vary, depending on type. Refer to the magnetron datasheet you are
using for full details.
The interconnecting cable length should be kept to a minimum, together with the magnetron to modulator
earth connection, to ensure the pulse current path is as small as possible.
Recommended ratings for the cable are 25 A, 100 V.
Note that the 100 V rating is for the cathode to heater isolation. The installation must consider that this cable
is pulsed at up to 65 kV, and sufficient clearance must be given between this cable and any earthed
components, which includes the bolts securing the modulator end plate.
© e2v technologies (uk) limited 2015
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DAS708229AA, Version 7, page 30
Control and Monitoring Connections
The following connections are required between the modulator, high voltage power supply and control unit.
Each cable assembly has details on the equipment connection at either end, the cable connection details for
each end, together with the labelling on each component.
Note: Different length cable assemblies are available, designated by a change in the last two letters of the
drawing number. Contact e2v technologies to discuss your requirements.
Cable Assembly
Identity
Heater Lead
DAS564308AA
DAS564308BA
DAS564308FA
Description
Powers the
transformer
contained within
the modulator for
magnetron
heaters.
Connection on
Equipment
Connection on
Equipment
Connection on
Lead
Connection on
Lead
MODULATOR
CONTROL UNIT
HEATER
SK8
SK8
HEATER
HEATER PS
SK8
3-pin MIL-C-5015
Panel Plug.
3 pin MIL-C-5015
lead socket.
7W2 size mixed DType Plug.
7W2 size mixed DType Socket.
MODULATOR
LV PSU Lead
DAS564307AA
DAS564307BA
DAS564307DA
Magnetron
Current Monitor
Lead
DAS564312AA
DAS564312BA
DAS564312DA
Magnetron
Voltage Monitor
Lead
DAS564311AA
DAS564311BA
DAS564311DA
Oil OverPressure Lead
DAS564310AA
DAS564310BA
DAS564310DA
Provides power
for the control
circuitry
contained within
the modulator.
CONTROL UNIT
LT PS
SK7
SK7
LT PSU
HTPSU I/F
PL6
7W2 size mixed DType Plug.
7W2 size mixed DType Socket.
7W2 size mixed DType Plug.
7W2 size mixed DType Socket.
MODULATOR
Provides the
monitor signal for
the magnetron
current from the
modulator.
CONTROL UNIT
I MAGNETRON
SK2A
I MAGNETRON
SK2A
SK2A MAG I
INPUT
BNC Socket
90 BNC Plug
BNC Plug
BNC Socket
MODULATOR
Provides the
monitor signal for
the magnetron
voltage from the
modulator.
Connects the
over-pressure
sensor mounted
to the modulator
to the control
unit.
© e2v technologies (uk) limited 2015
CONTROL UNIT
V MAGNETRON
SK2B
V MAGNETRON
SK2B
SK2B MAG
V INPUT
BNC Socket
90 BNC Plug
BNC Plug
BNC Socket
MODULATOR
CONTROL UNIT
OIL
PRESSURE
PL24
Male Push-On
Blade 6.3 mm
Female Push-On
Blade 6.3 mm
Document subject to disclaimer on page 1
PL24
PUMP
PL24
9-way D-Type
Socket.
9-way D-Type Plug.
DAS708229AA, Version 7, page 31
Control and Monitoring Connections
Fibre-Optic Connections
Note: Different length cable assemblies are available, designated by a change in the last two letters of the
drawing number. Contact e2v technologies to discuss your requirements.
Cable Assembly
Identity
Fibre-Optic Cable
Assembly
DRIVE
DAS549374AA
DAS549374BA
DAS549374CA
Fibre-Optic Cable
Assembly
ENABLE
DAS549374AA
DAS549374BA
DAS549374CA
Fibre-Optic Cable
Assembly
OVER TEMP.
DAS549374AA
DAS549374BA
DAS549374CA
Fibre-Optic Cable
Assembly
OVER
CURRENT
DAS549374AA
DAS549374BA
DAS549374CA
Description
Allows the drive
signal level to be
connected to the
modulator. This is
an input to the
modulator. A lit
fibre will trigger
the modulator.
Connection on
Equipment
Connection on
Equipment
Connection on
Lead
Connection on
Lead
MODULATOR
CONTROL UNIT
See layout
diagram in
Figure 15
DR
DR/D1
D1
Agilent ‘Versatile
Link’ Simplex
Blue HFBR-4515
Agilent ‘Versatile
Link’ Simplex
Blue HFBR-4511
Agilent ‘Versatile
Link’ Simplex Latch
Grey HFBR-4503
Agilent ‘Versatile
Link’ Transmitter
Grey HFBR-1521
MODULATOR
An input to the
modulator, to
enable pulsing. A
lit fibre enables
the modulator.
An output from
the modulator to
indicate overtemperature
conditions. An
unlit fibre is an
over-temperature
condition.
An output from
the modulator to
indicate
magnetron overcurrent. An unlit
fibre is an overcurrent condition.
© e2v technologies (uk) limited 2015
CONTROL UNIT
See layout
diagram in
Figure 15
EN
EN/D2
D2
Agilent ‘Versatile
Link’ Simplex
Blue HFBR-4515
Agilent ‘Versatile
Link’ Simplex
Blue HFBR-4511
Agilent ‘Versatile
Link’ Simplex Latch
Grey HFBR-4503
Agilent ‘Versatile
Link’ Transmitter
Grey HFBR-1521
MODULATOR
CONTROL UNIT
See layout
diagram in
Figure 15
OT
OT/D5
D5
Agilent ‘Versatile
Link’ Simplex
Grey HFBR-4505
Agilent ‘Versatile
Link’ Simplex
Grey HFBR-4501
Agilent ‘Versatile
Link’ Simplex Latch
Blue HFBR-4513
Agilent ‘Versatile
Link’ Receiver
Blue HFBR-2521
MODULATOR
CONTROL UNIT
See layout
diagram in
Figure 15
OC
OC/D6
D6
Agilent ‘Versatile
Link’ Simplex
Grey HFBR-4505
Agilent ‘Versatile
Link’ Simplex
Grey HFBR-4501
Agilent ‘Versatile
Link’ Simplex Latch
Blue HFBR-4513
Agilent ‘Versatile
Link’ Receiver
Blue HFBR-2521
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DAS708229AA, Version 7, page 32
Control and Monitoring Connections
Note: Different length cable assemblies are available, designated by a change in the last two letters of the
drawing number. Contact e2v technologies to discuss your requirements.
Cable Assembly
Identity
Electromagnet
Current Shunt
Lead
DAS564380AA
DAS564380BA
HV PSU Interface
Lead
DAS564309CA
DAS564309DA
Description
For connection of
the
electromagnet
current shunt to
the control unit. A
100 mV
maximum DC
level, that is
proportional to
electromagnet
current.
Provides the
connection
between control
unit and HV PSU
for control and
monitoring.
Connection on
Equipment
Connection on
Equipment
Connection on
Lead
Connection on
Lead
SHUNT
CONTROL UNIT
Ensure polarity is
correct.
E MAG SHUNT
SK4B
SK4B
MAGNET
CURRENT
Dependent on
shunt design
M4 Ring Terminals
BNC Plug
BNC Socket
HV PSU
CONTROL UNIT
REMOTE
HV PSU
PL6
HTPSU I/F
PL6
37-way D-Type
Socket
37-way D-Type
Plug.
37-way D-Type
Socket.
37-way D-Type
Plug.
User Interface Lead
The use of the user interface, available on the control unit and labelled PL5, is optional. It can be used to
control the system, as well as providing indications of faults and status.
The connection on the control unit is a 37-way D-Type plug. Full details of connections can be found in
Chapter 5 - Using the User Interface - PL5, with full connector pin listings available in Appendix A - User
Interface Pin Designations.
HV PSU Interlock Connection
The HV PSU Interlock connection (labelled INT’LK) must be shorted to allow the HV to be enabled. Interlock
closing mechanisms must have sufficiently low impedance for reliable contact at low currents. The interlock
connection switching current is approximately 1 mA.
© e2v technologies (uk) limited 2015
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DAS708229AA, Version 7, page 33
Fibre-Optic Connection Layout
The control unit fibre-optics are configured as follows:
Customer Configurable Outputs
Customer Configurable Outputs
D9
D10
D11
D12
D13
D14
D15
D16
Drive Out
Enable Out
System
Ready
System
Summary
Fault
Modulator
OverTemperature
Modulator
OverCurrent
Enable In
Drive In
D1
D2
D3
D4
D5
D6
D7
D8
Figure 14 - Control Unit Fibre-Optic Connection Layout
Fibre-optic outputs D9 - D16, as well as D3 and D4, can be factory configured to indicate any available
status or fault condition.
The modulator fibre-optics are configured as follows:
Figure 15 - Modulator Fibre-Optic Layout
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DAS708229AA, Version 7, page 34
CHAPTER 4 - SYSTEM OPERATION MODES
It is possible to operate the system in a number of different modes, depending on the method of control
required, and the magnetron type to be run.
Each mode is selected by changing the configuration of the control unit.
Most parameters are preset and factory programmed into the control unit, according to the type of
magnetron selected. These are as follows:
User
Changeable
Parameter
Magnetron Type
Yes
User selected by changing configuration.
Magnetron Heater Levels
No
Predetermined by magnetron type.
Magnetron Heater Cutback Profiles
No
Predetermined by magnetron type.
Magnetron Heater Warm-up Time
Yes
Generally determined by magnetron
type, but can be reconfigured if required.
No
Predetermined by magnetron type.
No
Predetermined by electromagnet type.
Maximum HV PSU Voltage Limit
No
Predetermined by modulator type.
Maximum settable Magnetron Pulse
Current Limit
No
Predetermined by modulator type.
Magnetron Heater Over- and UnderCurrent Trip Settings
Magnetron Electromagnet UnderCurrent Trip Setting
It must be noted that changing the configuration of the control unit to select an alternative magnetron may
not replicate all other operation parameters. These parameters include the way faults are handled. Contact
e2v technologies to discuss your requirements.
Parameters that can be configured by the user are as follows. These are also factory programmed into the
control unit.
BNC / Fibre-Optic Operation
Trigger and Enable inputs can be connected to the control unit, by either fibre-optics, or by direct wire
connection. Selecting either option will change both the Trigger and Enable inputs.
Note that when controlling the system using the RS485 state change commands, the Enable input fibre is
not required.
Connection Method
User Interface
PL6 pin 10
Connect Trigger To:
Connect Enable To:
Fibre-Optics
+5 V (or leave
unconnected)
D8 (refer to Chapter 3 –
Fibre-Optic Connection
Layout)
D7 (refer to Chapter 3 –
Fibre-Optic Connection
Layout)
Direct Connection
0 V (connect to
pin 2)
SK3A (refer to Appendix A
– User Interface Pin
Designations)
PL5 pin 8 (refer to
Appendix G – BNC
Connection Layout)
Control Interface
The modulator system can be controlled and monitored by the use of the RS485 serial bus interface, the
hard-wired user interface (PL5), or the fibre-optic interface. For a given application a customer can select
between these options or e2v can configure and combine them in order to integrate with the host system.
© e2v technologies (uk) limited 2015
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DAS708229AA, Version 7, page 35
Magnetron Peak Current Control
The level of magnetron peak current can be controlled in two ways. These are factory programmed into the
control unit configurations.
‘Pulse Amplitude Control’ is a 0 V to 10 V DC signal connected to the User Interface (PL5) on pin 11. The
control range is nominally 0 A to 280 A. This input has a ratio of 1 V per 27.9 A  6%. This input method is
referred to as ‘PAC’.
‘Drive Pulse Control’ is a square wave pulse, in the range of 0 s to 700 s, connected to SK1A. The control
range is nominally 0 A to 280 A. The pulse must be in the range of 5 V to 15 V peak voltage.
Manual/Automatic Run-Up
Two basic methods of enabling the system are available.
Manual Run-Up provides the user with a variety of control methods to pass the system from state to state.
Control can be via the following methods.
Fibre-Optics
The Enable fibre (D7) can be used to pass between the HV ON and PULSING states,
provided the conditions to pass from OFF to HV ON have been met. These conditions are to determine
whether magnetron heater levels are within the correct range, and if the HV PSU is fully enabled.
User Interface Full control of all the states is available via the User Interface. Refer to Appendix A and
Chapter 5 - Using the User Interface – PL5, for connection and state information.
RS485 Serial Communication Full control of all the states is available via the RS485 Serial link. Refer to
Chapter 7 - Remote Operation for the command details.
Automatic Run-Up allows the system to automatically pass to the Pulsing state if the transition criterion
between each state is met.
When this feature is enabled, the system will pass straight into the Heater Warm-up period when power is
applied to the control unit. When the HV PSU 3-phase power is applied, the supply will be enabled, and
when triggers are applied to the control unit, the PULSING state will be entered and magnetron pulsing will
commence.
Care should be taken when using this feature due to the system requiring minimal user intervention to pulse
the magnetron.
Miscellaneous Configurable Controls
These are factory programmed into the control unit configurations, but can be configured according to
customer requirements.
Parameter
Description
Control Unit Buzzer Enable/Disable
The buzzer contained within the control unit to
indicate faults and control inputs can be turned
on or off.
Auto Reset Configuration.
(Auto Reset)
How fault conditions are dealt with, and the
state to which they return to are configurable.
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DAS708229AA, Version 7, page 36
Available Configurations
The table below gives basic operational details for each configuration. An even numbered configuration, and
the next odd numbered configuration, is operationally the same except the odd numbered configuration has
a short heater warm-up time. For example, configurations 2 and 3 are operationally the same except that
configuration 3 has a 20-second heater warm-up time.
You should not deviate from the supplied configuration as damage may occur to the modulator or
magnetron.
Alternative configurations can be created. Contact e2v technologies to discuss your requirements.
Full details of each configuration can be found in document EDD708230AA.
Available Configuration Table
Config.
No.
Magnetron
Type
1
MG5193
series
2
M5028
series
Config.
No.
Magnetron
Type
Auto Run-Up, Drive Pulse
Control. 4-minute heater warmup time. Shunt electromagnet
input.
3
M5028
series
4
MG5193
series
Manual Run-Up, PAC Control.
5-minute heater warm-up time.
MPT5838/9 PSUD series HV
PSU. Shunt electromagnet input.
5
MG5193
series
6
MG5349
series
Manual Run-Up, PAC Control.
10-minute heater warm-up time.
MPT5838/9 PSUD series HV
PSU. Shunt electromagnet input.
7
MG5349
series
8
M5028
series
Manual Run-Up, PAC Control.
4-minute heater warm-up time.
MPT5838/9 PSUD series HV
PSU. Shunt electromagnet input.
10
MG5193
series
12
14
Operational Details on
Configuration
Operational Details on
Configuration
Generic – used by e2v
technologies for test only.
Auto Run-Up, Drive Pulse
Control. 20-second heater
warm-up time. Shunt
electromagnet input.
Manual Run-Up, PAC Control.
30-second heater warm-up time.
MPT5838/9 PSUD series HV
PSU. Shunt electromagnet
input.
Manual Run-Up, PAC Control.
30-second heater warm-up time.
MPT5838/9 PSUD series HV
PSU. Shunt electromagnet
input.
9
M5028
series
Manual Run-Up, PAC Control.
20-second heater warm-up time.
MPT5838/9 PSUD series HV
PSU. Shunt electromagnet
input.
Manual Run-Up, PAC Control.
3-minute heater warm-up time.
Shunt electromagnet input.
11
MG5193
series
Manual Run-Up, PAC Control.
20-second heater warm-up time.
Shunt electromagnet input.
M5052
Manual Run-Up, PAC Control.
5-minute heater warm-up time.
Shunt electromagnet input.
13
MG5052
Manual Run-Up, PAC Control.
20-second heater warm-up time.
Shunt electromagnet input.
M5028
series
Manual Run-Up, PAC Control.
4-minute heater warm-up time.
MPT5838/9 PSUD series HV
PSU. Shunt electromagnet input.
M5028
series
Manual Run-Up, PAC Control.
20-second heater warm-up time.
MPT5838/9 PSUD series HV
PSU. Shunt electromagnet
input.
© e2v technologies (uk) limited 2015
15
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DAS708229AA, Version 7, page 37
Available Configuration Table – continued
Config
No.
Magnetron
Type.
16
MG5349
series
18
MG5349
series
20
M5028
series
22
MG5193
series
Operational Details on
Configuration
Auto Run-Up, Drive Pulse
Control. 10-minute heater warmup time. Shunt electromagnet
input.
Auto Run-Up, Drive Pulse
Control. 10-minute heater warmup time. Shunt electromagnet
input.
Manual Run-Up, PAC Control. 4minute heater warm-up time.
MPT5838/9 PSUD series HV
PSU. 0 V to10 V electromagnet
iManual Run-Up, PAC Control. 5minute heater warm-up time.
MPT5838/9 PSUD series HV
PSU. 0 V to10 V electromagnet
i
t
Config
No.
Magnetron
Type.
17
MG5349
series
19
MG5349
series
21
M5028
series
23
MG5193
series
Operational Details on
Configuration
Auto Run-Up, Drive Pulse
Control. 30-second heater warmup time. Shunt electromagnet
input.
Auto Run-Up, Drive Pulse
Control. 30-second heater warmup time. Shunt electromagnet
input.
Manual Run-Up, PAC Control.
20-second heater warm-up time.
MPT5838/9 PSUD series HV
PSU. 0 V to10 V electromagnet
iManual Run-Up, PAC Control.
30-second heater warm-up time.
MPT5838/9 PSUD series HV
PSU. 0 V to10 V electromagnet
i
t
Other configurations are available on request.
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DAS708229AA, Version 7, page 38
Changing the Control Unit Configuration
The configuration is factory set as per your ordered requirements, but can be changed if required.
WARNING: Changing the control unit configuration to one that the modulator or magnetron is not designed
for, can result in damage to your system.
WARNING: Ensure all power to the HV PSU or Control Unit is removed prior to affecting any changes to the
configuration.
WARNING: Observe anti-static precautions when removing the control unit and changing the configuration.
To change the configuration, access to the circuit board contained within the control unit must be obtained.
Remove the four screws retaining the control unit into the high voltage power supply and carefully withdraw
the unit. Ensure no cables or circuit board IC’s get caught when removing the control unit.
Two 8-way DIL switches labelled CONFIG and SERIAL are located on the K503 circuit board within the
control unit. This is the largest PCB within the control unit, as shown below.
The switch labelled CONFIG is used to change the configuration, while the switch labelled SERIAL is used to
change the RS485 communication address.
To change, click the required switches across with a pointed tool.
Re-install the control unit into the high voltage power supply, and tighten all four retaining screws.
Apply power as required to each device.
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Selecting the CONFIG Switch Setting
Switch S2 is numbered 1 to 8, with each switch (1 to 6) having a numerical weighting:
Switch 1 = 1
Switch 2 = 2
Switch 3 = 4
Switch 4 = 8
Switch 5 = 16
Switch 6 = 32
Switch 7 = Reserved for operation mode
Switch 8 = Reserved for operation mode
Switch 7 should always remain OFF.
To set the S2 to a value, move individual switches 1 to 6 to ON, adding up the numerical weighting to equal
the value required.
For example, to set S2 to 15, turn S2 switches 1, 2, 3 and 4 to ON, and leave 5 and 6 OFF.
Since 1 = 1, 2 = 2, 3 = 4 and 4 = 8, 1 + 2 + 4 + 8 = 15.
The illustration below indicates the switch positions for a configuration setting of 15:
Selecting the SERIAL Switch Setting
The serial switch allows the setting of the RS485 communication address.
With switch 8 in the OFF position, the memory stored default address and baud setting will be used. This is
address 32, and baud 9600.
With switch 8 in the ON position, switches 1 to 6 can be used to select the address. The same numerical
weighting as for the CONFIG switch applies, with the resulting number selected by the switches being added
to 30 to achieve the final address.
For example, to set to External (switch) address setting of address 31 ensure switches 8 and 1 are ON.
The illustration below indicates the switch positions:
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CONFIG and SERIAL Switch Details
CONFIG Switch S2
SERIAL Switch S1
OFF
ON
OFF
ON
8
No Front Panel
Front Panel Fitted
8
Memory Address/
Baud Setting
Select MPT5838/
9 PSUD HV PSU
External (switch)
Address Setting
7
Normal Mode
Do Not Use
7
6
-
Configuration (32)
6
-
Address (32)
5
-
Configuration (16)
5
-
Address (16)
4
-
Configuration (8)
4
-
Address (8)
3
-
Configuration (4)
3
-
Address (4)
2
-
Configuration (2)
2
-
Address (2)
1
-
Configuration (1)
1
-
Address (1)
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Do Not Use
DAS708229AA, Version 7, page 41
CHAPTER 5 - SYSTEM OPERATION
Final Checks
Before attempting to start up the system for the first time, ensure all cables, mounting arrangements and
earthing has been completed in accordance with Chapter 3 of this manual.
Description of Operation
The modulator, high voltage power supply and control unit, are designed to be used together as a system.
This provides full control over magnetron heaters, maintaining magnetron current regulation at the user
selected level, and monitoring and managing any fault conditions.
The system operates when the user commands the control unit to change states.
The basic states, and the commands required to transition between them, are shown in Figure 16 - Main
Software Operating States. Note the FAULT state is not shown in this diagram.
Figure 16 - Main Software Operating States
There are four state control commands available via the User Interface or serial communications, and one
available via the fibre-optics. These are Off, Warm-up, HV PSU On, and Pulsing. The Pulsing command is
the only fibre-optic command available.
In order to transition between the states, certain criteria must be fulfilled. This ensures the system will not
enter a state when it is not ready to do so.
The diagram shows the state commands required to transition both forwards and backwards between states.
These commands are shown in Figure 16 as such (for example):
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Each command refers to a command that can be asserted via the user interface, fibre-optics, or the AMCON
control software.
A description of each state, and the criteria required to enter it, is as follows.
Operation State Description
Full details of the operation states can be found in the control unit specification, drawing number
DAS563006AN, available from e2v technologies upon request.
‘Off’ State
This is the normal state the control unit will enter when power is applied. All controls are off.
‘Warm-up’ State
To enter this state, the electromagnet must be on and set within the correct range. All faults must be cleared.
The Warm-up state is entered if the Warm-up, HV ON, or Pulsing control inputs are asserted on the User
Interface (PL5), or the Drive Enable fibre-optic input (D7) is asserted.
On entering this state, the magnetron heaters are turned to their maximum power according to the tube type
selected. A timer of predetermined length then starts to ensure the magnetron heater is at the correct
temperature before applying HV and pulsing. The Off state can be entered by asserting the Off control via
the User interface or RS485.
‘Warm Standby’ State
Once the heater warm-up time has elapsed, the Warm Standby state is reached. This state can have a
different setting for the magnetron heaters.
If this state is reached from the OFF state, the duration of the warm-up timer required to reach the Warm
Standby state, is determined in the tube set-up configuration. For most configurations, this time is zero and
the system will immediately pass to the Hot Standby State.
‘Hot Standby’ State
To enter this state, the magnetron heaters must be on and within the correct range.
This state is reached at the end of the heater warm-up time, or if the warm-up control is asserted when in the
Warm Standby state. Heaters are at full power in this state. The OFF state can be entered by asserting the
OFF control via the User interface or RS485.
‘HV On’ State
To enter this state, the HV PSU must be on, i.e. the Phase Loss Fault and HV PSU Summary Fault must be
clear. Ensuring the HV PSU Summary Fault is clear also includes the HV PSU Interlock line, which must be
clear.
This state is entered from the Hot Standby state when the HV Enable control input on the User Interface
(PL5) is asserted. Assertion of the warm-up control input will return the system to the Hot Standby State,
while the Off state can be entered by asserting the OFF control via the User interface or RS485.
‘Pulsing’ State
This state is entered from the HV ON state when the Pulsing control input on the User Interface (PL5) is
asserted, or the Drive Enable fibre-optic input (D7) is asserted. The modulator will only be commanded to
apply pulses to the magnetron when pulses are applied to the control unit (via D8 or SK3A).
Assertion of the warm-up control input will return the system to the Hot Standby State. Asserting the Pulsing
control input will return the system to the HV ON state, and the OFF state can be entered by asserting the
OFF control via the User interface or RS485.
‘Fault’ State
The fault state is entered if any fault is detected. The faults are divided into four levels. Major and Minor
faults will take the system back to different states. Warnings and Advisory will simply be displayed either on
the user interface, or via the RS485 connection, without changing system state.
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Operation State Transitioning
Provided that the criteria required to enter a state are fulfilled, any system state can be entered by issuing
only the command for the state at which you wish to finish.
Of the four commands available, a command higher than the state the system is currently in will cause the
system to transition through any state to reach the state requested.
As an example, if the system is in the Off state, issuing a pulsing command will cause the Warm-up state to
be initiated. Provided that the heater warm-up conditions and the requirements to enter the HV On state are
met, the system will pass to the HV On state, and finally, provided the requirements to enter the pulsing state
are met, the Pulsing state will be reached.
The system will never skip a state, but it will automatically pass through them to reach the state requested by
the user.
The following table details how the system operates with commands issued from each state and the criteria
required to reach the final requested state.
State
Currently In
State
Command
Issued
Final state
Required Criteria
Off
Warm-up
Hot Standby
Magnetron heater level within defined ranges.
Electromagnet within defined ranges.
Off
HV On
HV On
Magnetron heater level within defined ranges.
Electromagnet within defined ranges.
HV PSU On, and all faults clear.
Off
Pulsing
Pulsing (magnetron not
pulsing)
Magnetron heater level within defined ranges.
Electromagnet within defined ranges.
HV PSU On, and all faults clear.
Off
Pulsing
Pulsing (magnetron pulsing)
Magnetron heater level within defined ranges.
Electromagnet within defined ranges.
HV PSU On, and all faults clear.
Triggers applied to Control Unit.
Hot Standby
HV On
HV On
Magnetron heater level within defined ranges.
Electromagnet within defined ranges.
HV PSU On, and all faults clear.
Hot Standby
Pulsing
Pulsing (magnetron not
pulsing)
Magnetron heater level within defined ranges.
Electromagnet within defined ranges.
HV PSU On, and all faults clear.
Hot Standby
Pulsing
Pulsing (magnetron pulsing)
Magnetron heater level within defined ranges.
Electromagnet within defined ranges.
HV PSU On, and all faults clear.
Triggers applied to Control Unit.
HV On
Pulsing
Pulsing (magnetron not
pulsing)
Magnetron heater level within defined ranges.
Electromagnet within defined ranges.
HV PSU On, and all faults clear.
Pulsing (magnetron pulsing)
Magnetron heater level within defined ranges.
Electromagnet within defined ranges.
HV PSU On, and all faults clear.
Triggers applied to Control Unit.
HV On
Pulsing
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DAS708229AA, Version 7, page 44
Electromagnet Current
To allow the system to progress from the OFF state, the electromagnet current must be established.
The electromagnet current is used to provide a starting level for the high voltage power supply. This ensures
the magnetron current is at approximately at the correct level for different tube operating conditions.
By monitoring the electromagnet current, the control unit adjusts the high voltage power supply to a preset
level for each tube type.
This is used until the first pulse is achieved when running, since once a current pulse is detected, the system
changes to regulate the magnetron current against the user requested running level, and automatically
adjusts the high voltage power supply as required.
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Initial Start-Up Guide
When initially starting the system, it is recommended that the manual method of control be used. This allows
each step to be fully controlled by the user.
Refer to Chapter 4 for setting the configuration for Manual Control.
Refer to Chapter 5, Start-Up states - Expected Screen Shots, for details on expected screen shots whilst
performing a start-up sequence.
The following flowchart details the steps that should be taken when using the system for the first time:
Figure 17 - Start-up Guide
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Start-up States - Expected Screen Shots
Optional AMCON remote communication software is available from e2v technologies. Refer to Chapter 6 AMCON – PC Based Communication Software for full details.
The following screen shots are what should be observed on the AMCON communication software, for each
state.
Use these screenshots in conjunction with the initial start-up flowchart.
Particular attention should be paid to displayed information in the following areas to ensure correct operation
is occurring at each state.
‘Status’
The operational state of the modulator is displayed in this area.
‘Main Faults’
When the system is in the ‘fault’ state, this area will display the cause.
‘HV PSU’
The status of the high voltage power supply is displayed in this area. Specific faults and control indications
are displayed.
‘Warnings’
Warnings of excessive parameter values are displayed in this area. Also displayed will be minor status
indications.
‘Masked Faults’
Fault conditions that have occurred, but are not of any operational significance are displayed in this area.
‘Modulator Parameters’
Monitored values from system components are displayed on this tab.
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1. Off State
Once power is applied to the control unit,
AMCON will display this screen.
OFF is displayed in the status box.
Heater voltage and current is at zero.
Electromagnet current level is indicated.
HV PSU Set level is indicated.
HV PSU Voltage, Current and Mean Power
are at zero since the HV PSU is off.
‘No Drive’ is indicated in the ‘Warnings’
display, since pulses have not yet been
turned on.
2. Warm-up State
When Warm-up is initiated, the timer starts
to count down to zero.
The ‘Heater Voltage’ and ‘Heater Current’
(displayed on the ‘Modulator Parameters’
tab) will start to increase, and continue to
increase as the magnetron heaters warm
up.
This time will vary for each tube type.
‘No Drive’ is indicated in the ‘Warnings’
display, since pulses have not yet been
turned on.
‘hv psu inhibited’ indicated in the ‘HV PSU’
display.
3. Warm Standby State
This state is not normally used. It is
accessible by re-asserting the Warm-up
control from the Hot Standby state.
The heaters will be on in this state, with the
‘Heater Voltage’ and ‘Heater Current’ level
displayed on the ‘Modulator Parameters’
tab.
‘No Drive’ is indicated in the ‘Warnings’
display, since pulses have not yet been
turned on.
‘hv psu inhibited’ indicated in the ‘HV PSU’
display.
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4. Hot Standby State
This state is normally the next state after
the Warm-up period.
The heaters will be at full power in this
state, with the ‘Heater Voltage’ and ‘Heater
Current’ level displayed on the ‘Modulator
Parameters’ tab. These values will only
change slightly now the magnetron heaters
are fully warmed up.
‘No Drive’ is indicated in the ‘Warnings’
display, since pulses have not yet been
turned on.
‘hv psu inhibited’ indicated in the ‘HV PSU’
display.
5. HV ON State
Once 3-phase is applied to the HV PSU,
and the criteria met to continue, the PSU
will be fully enabled, and will apply DC
voltage to the modulator.
Within the ‘HV PSU’ display, the following
will be indicated:
‘hv psu on’
‘hv psu end of charge’
‘+15V control rail established’
‘voltage regulation’
The ‘HV PSU Voltage’ will now be
displayed on the ‘Modulator Parameters’
tab. This should be approximately the
same as the ‘HV PSU set level’.
6. Pulsing State
The modulator should now be pulsing with
voltage and current traces available from
the control unit monitor outputs
Within the ‘HV PSU’ display, ‘current
regulation’ will be indicated.
‘HV PSU current’ and ‘HV PSU mean
power’ values will also be displayed. These
depend on pulse width, PRF and tube type.
Compare running levels against supplied
test results.
‘drive present’ indicates pulses are applied
to the control unit.
‘magnetron current present’ indicates the
control unit is receiving monitor pulses
from the modulator.
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Expected Operation
The system will now be running, and the magnetron voltage and current traces are available for connections
to an oscilloscope from SK5A and SK5B on the control unit. Terminate these outputs into 50 .
Magnetron Current Control
The absolute level of magnetron current can be controlled by adjusting either the Pulse Amplitude Control
(connected to User Interface) or the Drive Pulse Width (connected to SK1A).
Always adjust the levels with consideration to the load line characteristics of the magnetron.
A set of test results together with a series of oscilloscope traces will be supplied with each modulator. These
detail a series of tests covering the full range of the modulator operation, and give expected running levels
that can be observed on the AMCON monitoring software. The oscilloscope traces provide, for each level,
the expected outputs from the two monitors on the control unit (SK5A for magnetron current, and SKB for
magnetron voltage).
Typical Operating Oscilloscope Traces.
Typical Operating Oscilloscope Traces.
SK5A and SK5B Control Unit Monitor Outputs.
MPT5838LPF system running MG5193 type magnetron.
68 A Magnetron current. Solenoid level: 14 A
SK5A and SK5B Control Unit Monitor Outputs.
MPT5838LPF system running MG5193 type magnetron.
110 A Magnetron current. Solenoid level: 21 A
Typical Operating Oscilloscope Traces.
Typical Operating Oscilloscope Traces.
SK5A and SK5B Control Unit Monitor Outputs.
MPT5839HPF system running M5028 type magnetron.
100 A Magnetron current. Solenoid level: 21 A
SK5A and SK5B Control Unit Monitor Outputs.
MPT5839HPF system running M5028 type magnetron.
250 A Magnetron current. Solenoid level: 32 A
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Pulse Width and Pulse Repetition Frequency (PRF)
The pulse width and PRF can be adjusted while the modulator system is operating in the ‘pulsing’ state.
Be sure to operate within the limits defined within the system specifications as defined in document
DAS563000BN.
Heater Control
As the magnetron current level, pulse width or PRF is changed, the mean power of the high voltage power
supply will change, and therefore the magnetron heaters will be affected.
Control of the magnetron heaters is preset into the control unit, with different settings for each tube type. It is
a fully automatic system, to which the user has no control.
The heater power supply is current controlled, with the set level dependant on the tube mean power.
The mean power is calculated from the high voltage power supply, and is on a 10-second refresh rate. A
high mean power will result in a reduced heater or even completely off, level of heaters. The heater power
level is reduced in order to maintain the optimum cathode temperature.
Electromagnet Current Supply
It is not recommended that the electromagnet supply be altered in any way whilst the modulator system is in
the ‘pulsing’ state.
Always return to at least the ‘HV On’ state before affecting any changes to this supply.
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Using the User Interface – PL5
The User Interface is accessible via the 37-way D-Type plug located on the Control Unit front panel. It
provides control and fault indication, which can be separated into the following five groups.
For pin designation, refer to Appendix B - HV PSU Interface Pin Designations.
Digital Control Inputs are momentary action connections. They must be pulled to 0 V(b), and sink 4 mA
maximum when connected to 0 V(b). Momentarily pulling these inputs LOW for at least 10 ms will action the
input. These are trailing edge events, i.e. when the input is released from 0 V(b), the action occurs. Holding
any of the control inputs permanently low will lock the system until released.
There is no requirement to externally de-bounce these inputs.
Level Control Inputs are permanent switch connections. They must be sunk to 0 V(b), and draw 4 mA
maximum when connected to 0 V(b).
Analogue Control Input requires a 0 V to 10 V DC input voltage with a 3 mA capability.
Status Indicators are Darlington outputs and are internally sunk to 0 V(b). For ANY external connections,
the current must be limited to 60 mA, and the voltage limited to 20 V DC. All Status Indicator lines are pulled
LOW to indicate the True condition.
Fault Indicators are Darlington outputs and are internally sunk to 0 V(b). For ANY external connections, the
current must be limited to 60 mA, and the voltage limited to 20 V DC. All Fault Indicator lines are pulled LOW
to indicate the fault condition.
Example circuits for connection to the groups available on PL5 are shown in Figure 18 - Example User
Interface Circuits.
User Interface Detailed Descriptions
Digital Control Inputs
Off
Places the control unit into the “Off” state. Magnetron heaters are off, LV.
PSU is on. This is a momentary input that requires to be asserted for 10 ms. It is a
trailing edge event.
Warm-up
Asserts the control unit into the “Warm-up” state. Magnetron heaters are turned on,
and the warm-up countdown timer is started. At the end of the timer (tube dependent)
the control unit will enter the “Hot Standby” State, with heaters turned fully on. This is
a momentary input requiring to be asserted for 10 ms. It is a trailing edge event.
Asserting the Warm-up input again will put the control unit into the “Warm Standby
State”. This state allows the heaters to be on, but at a reduced level.
Asserting this input toggles between the “Hot Standby” and “Warm Standby” states.
This is a momentary input requiring to be asserted for 10 ms. It is a trailing edge
event.
HV Enable
Asserts the control unit into the “HV On” state, only when the Warm-up timer has
finished. This state will only become true if all HV PSU faults are clear, and is ready to
be enabled. Asserting this input from the Off state will cause the “HV Enable” Digital
Status Indicator Output to flash. This is a momentary input requiring to be asserted for
10 ms. It is a trailing edge event.
Pulsing
Asserts the control unit into the “Pulsing” state, only if pulses are present at either
SK3A or D8. The enable fibre (D2) is asserted, and the modulator will start pulsing
according to the level set by the user. Asserting this input from the Off state will cause
the “Pulsing” Digital Status Indicator Output to flash. This is a momentary input
requiring to be asserted for 10 ms. It is a trailing edge event.
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Level Control Inputs
HV PSU Hi/Lo Mode
NOTE: This function is not required for MPT5838/9 PSUD HV PSU.
Selects the HV PSU operating mode. Connected to 0V selects Low Mode.
Connected to +5 V DC, or left unconnected, selects High Mode.
External Interlock
This can be used as an interlock to inhibit the system from entering the Warm-up
State. Connected to 0 V clears the interlock and allows the system to operate.
Connected to +5 V DC, or left unconnected, inhibits the system. Attempting to enter
the Warm-up state with an External Interlock Fault will cause the system to enter the
Fault state and indicate the fault condition.
This interlock can be overridden by fitting a jumper to PL9 (Ext I/L O/R) within the
control unit on the K503 PCB.
Drive Source Select
Selects the input method for the modulator trigger signal. Connected to 0 V(b) will
select the BNC input SK3A. Connected to +5 V DC (maximum) will select the FibreOptic Input D8.
Analogue Control Input
Pulse Amplitude
Control
A 0 V to 10 V DC input which is proportional to the peak current level of the modulator
(nominally 0 A to 280 A). This input has a ratio of 1 V per 27.9 A  6%.
Power Supply
+15 V(b)
0 V(b)
A +15 V output to which any connection must be limited to 10 mA.
The 0 V reference connection for all inputs to the control unit.
Digital Fault Indicator Outputs
PL5 Digital Fault and Status Indicator outputs must be limited to 40 mA maximum per output.
Trip Limit Exceeded
When consecutive arcing above the pre-set number is counted by the control unit, an
“Excessive Arc” fault occurs. When the Excessive Arc counter exceeds the pre-set
number, a “Trip Limit Exceeded” fault occurs.
HV PSU Summary
Fault
Any fault signalled by the HV PSU will also cause this fault to occur.
LV/Heater PSU Fault
This fault will occur if the K506 board thermal switch exceeds the trip temperature, or
if either SK7 or SK8 connections are not made or incorrect. SK7 and SK8 leads have
interlock connections, which prevent operation if the cables are incorrectly fitted. The
K506 thermal switch is fitted to the main heatsink.
System Summary
Fault
Any fault in either the modulator or HV PSU will also cause this fault to occur.
External Interlock
An External Interlock occurs when the interlock on the User Interface is connected to
+5 V DC, or left floating.
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Digital Fault Indicator Outputs - Continued
HV Voltage Limit
The HV Voltage Limit provides an upper limit clamp to the output from the Control
Unit to the HV PSU.
Peak Current Limit
The Peak Current Limit provides an upper limit clamp for the Magnetron Peak
Current Input. It operates on the voltage set by either the Pulse Amplitude Control
(User Interface) or the HV Drive Pulse (SK1A). It is factory set within the
configuration for each customer and tube type.
Mean Power Limit
The Mean Power is a mathematical calculation based on the voltage and current as
read from the HV PSU. A factory-configured clamp is set for each magnetron type,
and when this limit is reached, the “Mean Power Limit” fault will occur.
Electromagnet
Current Low
This fault occurs if the level of the electromagnet current drops below the trip level.
The trip point is factory set within the configuration for each customer and tube type.
HV PSU Current
Regulation
Indicates the HV PSU is operating in the current regulation mode.
Heater Open
A Heater Open fault is used as an indication of a low heater current. For the majority
of the Warm-up time, this fault is masked, and only becomes active approximately 10
seconds before the end of the Warm-up time.
Heater Short
A Heater Short fault is used as an indication of an excessively high heater current.
For the majority of the Warm-up time, this fault is masked, and only becomes active
approximately 10 seconds before the end of the Warm-up time.
Modulator Stack
Fault
A Modulator Stack Fault indicates excessive current is flowing though the stack. This
could be due to the failure of some of the Stage boards, or from an abnormally high
output from the HV PSU. The trip current is nominally 60 mA.
Modulator Over Temperature
The modulator has a built in temperature trip monitoring oil temperature. This is set to
a nominal 53 C. When the temperature is exceeded, the Over-Temperature Fault
will be indicated. The temperature trip has a 2 C hysteresis below the set
temperature, and as soon as the oil temperature drops below this, the trip will clear.
Oil Over-Pressure
The modulator incorporates an oil over-pressure switch, specified to operate at
between 5 psi and 10 psi. If this pressure is exceeded, an Oil Over-Pressure trip will
occur.
Magnetron Arc
Excessive Arcing
Each single magnetron arc event will be indicated on this output.
When the control unit has exceeded the pre set number of consecutive arcs, this fault
is indicated.
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Digital Status Indicator Output
Power On
Off
Indicates the +5 V supply on the K503 Control Board is present.
Indicates the Control System is in the “Off” State.
Hot Standby
Indicates the Control System is in the “Hot Standby” State.
HV PSU On
Indicates the Control System is in the “HV PSU On” State. This output will flash if the
“HV Enable” Digital Control Input is asserted from the Off or Warm-up state.
Pulsing
Warm Standby
Warm-up
Indicates the Control System is in the “Pulsing” State. This output will flash if the
“Pulsing” Digital Control Input is asserted from the Off or Warm-up state.
Indicates the Control System is in the “Warm Standby” State.
Indicates the Control System is in the “Warm-up” State.
PL5 Digital Fault and Status Indicator outputs
must be limited to 40mA max per output.
Figure 18 - Example User Interface Circuits
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Using the Fibre-Optic Interface
It is possible to control the system by using the fibre-optic connections only.
As described in the ‘Operation State Transitioning’ section in Chapter 5, states can be reached by issuing
the command for the state you wish to end at, so long as the conditions to pass to each state are met.
By using the Enable (D7) and Drive (D8) fibre-optics, it is possible to pulse the modulator correctly.
The following flowchart details operation using the fibre-optics as the sole method of control:
Figure 19 - Control Using Fibre-Optics.
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Control Unit BNC Descriptions
Refer to Appendix G - BNC Connection Layout for details on the layout of the Control Unit BNC Connections.
SK1a - HV Drive Pulse (0 – 700 s)
A square wave pulse, in the range of 0 s to 700 s, that is used to control the magnetron peak current. The
pulse width is proportional to the current, with the control range nominally 0 A to 280 A. The input is loaded
with 470 Ω, and the driving source must be capable of providing a pulse of peak value of 5V to 15V into this
load.
SK1b - Trigger Monitor Output
An output monitor of the modulator trigger pulse as connected to the control unit on either SK3a or D8. The
output is a 5 V peak maximum output.
Terminate into 1 M.
SK2a - Magnetron Current Pulse Input
Connects the control unit to the modulator to enable monitoring of the magnetron peak current, and for
control purposes.
This connection MUST be made when running a system.
SK2b - Magnetron Voltage Pulse Input
Connects the control unit to the modulator to enable monitoring of the magnetron peak voltage, and for
control purposes.
This connection MUST be made when running a system.
SK3a - Modulator Drive Input
An optional input for the modulator drive or trigger. This is the same type of input as the fibre-optic input on
D8, and is selected by control of the Drive Source Select line available on the User Interface (PL5).
SK3a drives an Optocoupler input. The safe working area is 5V to 15V into 820 Ωs with a VF of 1.3V dropped
across the opto coupler LED. The Optocoupler maximum average current must not exceed 10mA.
SK3b - HV PSU Voltage Monitor Output
A monitor output of the HV power supply DC level.
Terminate into 1 M.
SK4a - Primary Current Feedback
A ramp waveform output that is directly proportional to the 0 – 700 s HV Drive Pulse connected to SK1a.
This output will only be present when a connection is made to SK1a.
SK4b - Electromagnet Current Input
A 0 V to 100 mV maximum input required for the control system to accurately read the set current of the
magnetron electromagnet supply. This is used to set the initial starting point of the HV Power Supply.
The ratio of this input must be 100 mV / 50 A.
SK5a - Magnetron Current Pulse Monitor Output
A monitor output for the magnetron current pulse. This is intended to be connected to an oscilloscope, and
should be terminated into 50 .
The monitor output ratio when terminated into 50  is 1 V / 100 A (nominal).
SK5b - Magnetron Voltage Pulse Monitor Output
A monitor output for the magnetron voltage pulse. This is intended to be connected to an oscilloscope, and
should be terminated into 50 Ω.
The monitor output ratio when terminated into 50  is 1 V / 10 kV (nominal).
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System Shutdown Guide
The following flowchart details the steps that should be taken when turning off the system from the Pulsing
state:
Figure 20 - Shutdown Guide
In an Emergency
In the case of an emergency, apply OFF, remove the HV PSU 3-phase power and the Control Unit 240 V AC
power.
Alternatively, remove the 3-phase supply from the HV PSU, and the system will return to the Hot Standby
state.
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CHAPTER 6 - PC COMMUNICATION SOFTWARE
Introduction
The AMM Modulator system is equipped with an interface as a slave via an asynchronous, half-duplex, multidrop, four-wire serial interface connected to the PC COM port and SK6 on the MPT5838/9 CR series Control
Unit. This gives full remote control and monitoring of the system as part of an integrated system, when used
with a suitable RS232 to RS485 converter.
Two optional programs are available:
AMCON provides monitoring and control over the system;
OSUPDATE provides a method of updating the embedded software within the control unit.
The programs are designed to operate on Windows XP, 2000 and NT platforms.
DISCLAIMER
WHILST DUE CARE HAS BEEN TAKEN IN THE DEVELOPMENT OF THIS SOFTWARE, IT
MUST BE APPRECIATED THAT IT WAS DEVELOPED FOR ENGINEER'S USE. NO LIABILITY,
CONSEQUENTIAL OR OTHERWISE, CAN BE BORNE BY e2v technologies (uk) AS A RESULT
OF USING THIS SOFTWARE, EITHER IN THE MANNER INTENDED OR OTHERWISE, NOR
FOR THE INABILITY TO USE THIS SOFTWARE FOR THE PURPOSE SUPPLIED OR
OTHERWISE.
How to Obtain
Contact e2v technologies for details on obtaining both the AMCON communication software, and the
Operating System Upload software.
Installing
Each program will be supplied within main AMCON and OSUPDATE program directories. The version
number of each program will follow the program name.
Contained within each program directory is a SETUP.EXE file.
Click Start …. Run
Browse to the program location and the program directory you wish to install then open the SETUP.EXE file.
Click OK to install the program then follow on-screen instructions to complete the installation.
Alternatively, use your browser program to run the required SETUP.EXE file.
To run the programs, navigate to the directory where the program has been installed, and run:
For AMCON software:
For OSUPDATE software:
© e2v technologies (uk) limited 2015
AMM_SoftwareControl.exe
OSUpdate.exe
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Communication Lead
The communication lead should consist of an RS422/RS232 converter, with a suitable connector to connect
to the PC COM port, and a 9-way D-type plug to connect to SK6 on the control unit.
If your PC is not feature a 9 way D-Type serial connector, a USB to serial converter can be used such as the
TARGUS model PA088E.
A good quality, overall screened, twisted pair cable with a characteristic impedance of 120  should be used
(Belden 9842, for example) for connection between the PC and Control Unit. The control unit has 120 
terminations on the transceiver input and output.
The cable should ideally be terminated at both ends with an impedance of 120 , although it is really only
necessary to add the impedance at the RS422/RS232 converter end, if the cable length is greater than 7.5 m
(25 ft).
Be aware that the RS422/RS232 converter must be capable of supplying the necessary DC current. This will
depend on the operating voltage of the device chosen, and can be calculated by dividing the converter
operating voltage by 60  (120  at each end of the cable). For this reason, it is recommended that
externally powered converters be used instead of the converters that power themselves directly from the
serial port of the computer.
The wiring designations RX+, RX-, TX+ and TX- can differ between RS422/RS232 converter manufacturers,
but would normally be connected as follows in Figure 21 – Communication Lead Wiring (Example 1).
Converter
Control Unit end
(9-way D-Type Plug)
TX +
Pin 9
(RX -)
TX -
Pin 3
(RX +)
RX +
Pin 6
(TX -)
RX -
Pin 4
(TX +)
Figure 21 - Communication Lead Wiring (Example 1)
An alternative is shown as follows in Figure 22 – Communication Lead Wiring (Example 2).
Converter
Control Unit end
(9-way D-Type Plug)
TX +
Pin 3
(RX +)
TX -
Pin 9
(RX -)
RX +
Pin 4
(TX +)
RX -
Pin 6
(TX -)
Figure 22 - Communication Lead Wiring (Example 2)
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Using the Program
This section gives a basic guide to using the AMCON software. Full and detailed instruction for the use of the
AMCON program can be found in document EDD707033AA, available from e2v technologies upon request.
The AMCON program automatically searches for the correct address of the attached and powered control
unit, when started.
To enable particular features of the software, a password will be requested to access the program. This will
be supplied by e2v technologies at the time of obtaining the program.
The ‘Request Password’ feature can be enabled or disabled within the ‘File’ menu of the program, once the
main operating screen is accessed.
Status and Control Functions
Figure 23 shows a typical customer operating AMCON screen.
Figure 23 - Typical AMCON screen
Each area of the display is described as follows:
‘Status’ Display Box
This displays the operational state of the modulator, which can be any of the following:
‘Off’, ‘Warm-up’, ‘Warm Standby’, ‘Hot Standby’, ‘HV On’, ‘Pulsing’ or ‘Fault’.
Whilst in the ‘Warm-up’ state, the warm-up time remaining will be displayed.
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‘Main Faults’ Display Box
When the modulator is in the ‘Fault’ state, this box will display the cause.
Possible faults that can be displayed, and their possible causes, are as follows:
Name
system summary fault
hv psu summary fault
heater short circuit
heater open circuit
heater/LV psu fault
mean power limit
modulator stack fault
modulator over-temperature
oil over-pressure
arc trip limit exceeded
no arc fibre
external interlock
electromagnet undercurrent
magnetron current
no drive present
pulse too long
pulse too short
excessive magnetron arcing
magnetron arc
system inhibited
Cause
Logical OR of all the faults
Logical OR of the HV PSU faults
Heater under voltage detection
Heater over voltage detection
Heater + LV PSU not connected
Voltage current limit exceeded
High stack leakage current
Modulator oil temperature > 50 °C nominal
Modulator internal pressure too high
Number of magnetron arc trips exceeds limit
No response from arc fault fibre-optic
User interface interlock open
Signal from current shunt ≤10 A default
No magnetron current after 30 pulses
No trigger pulse at SK3a or D9
HV drive pulse at SK1a is greater than 700 µs
Trigger pulse at SK3a or D9 are less than 1 µs
Arc count exceeded = 1 trip (see trip limit)
Modulator stack current is greater than 150 A/250 A
Control system unable to find a valid configuration
Refer also to Chapter 5 - Digital Fault Indicator Outputs for further details.
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‘HV PSU’ Display Box
The status of the HV power supply (fault conditions in red):
Name
Cause
+15 V control rail established
HV PSU control interface active
hv psu on
HV PSU output enabled
hv psu off
HV PSU output disabled
hv psu end of charge
EOC of storage capacitor for demanded HV
voltage regulation
HV PSU in voltage regulation mode
current regulation
HV PSU in current regulation mode
hv psu inhibited
HV PSU inhibited
interlock open
Interlock at rear of HV PSU open
voltage not ready
HV PSU rail voltage not ready
phase loss
Missing or low 400 V phase
load fault
Open/short HV PSU output
over-voltage fault
HV PSU output voltage >60 kV nominal
temperature fault
HV PSU temperature switch >50 °C nominal
fan fault
HV PSU cooling impaired
hv psu load arc
HV PSU load arc
hv psu internal arc
HV PSU internal arc
hv psu feedback connector fault
HV PSU connector not home
hv psu tank pressure high
HV PSU transformer pressure
hv psu inverter over current
HV PSU inverter over current
hv psu heatsink thermostat fault
HV PSU heatsink thermostat fault
‘Warnings’ Display Box
Warnings of excessive parameter values or impaired operating conditions:
Name
Cause
no magnetron current
No magnetron current pulse present at SK2a
drive present
Trigger pulse present at SK3a or D9
no drive present
No trigger pulse present at SK3a or D9
peak current limit
Requested magnetron peak current exceeded
hv psu voltage limit
Requested voltage exceeds magnetron limit
‘Masked Faults’ Display Box
Any fault conditions which have occurred, but are not of any operational significance and consequently their
executive function is masked:
Name
Cause
heater short circuit
Heater under voltage detection
heater open circuit
Heater over voltage detection
hv psu interlock open
Interlock at rear of HV PSU open
hv psu voltage not ready
HV PSU rail voltage not ready
hv psu phase loss
Missing or low 400 V phase
hv psu load fault
Open/short HV PSU output
hv psu over-voltage fault
HV PSU output voltage >60 kV nominal
hv psu temperature fault
HV PSU temperature switch >50 °C nominal
hv psu arc
HV PSU load arc
hv psu feedback connector fault
HV PSU connector not home
hv psu heatsink thermostat fault
HV PSU heatsink thermostat fault
hv psu inverter over current
HV PSU inverter over current
no drive present
No trigger pulse present at SK3a or D9
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Control Buttons
‘Off’ Button
Click the OFF button to command the modulator to the ‘Off’ state with no pre-conditions.
‘Warm Standby’ Button
Click the WARM STBY button to command the modulator to the ‘Warm Standby’ state.
From the ‘Off’ state, the modulator will pass through the ‘Warm-up’ state.
Note: This control is not active in all configurations
‘Hot Standby’ Button
Click the HOT STBY button to command the modulator to the ‘Hot Standby’ state.
From the ‘Off’ state, the modulator will pass through the ‘Warm-up’ state.
‘HV PSU Enable’ Button
Click the HV PSU ENABLE button to command the modulator to the ‘HV On’ state.
From the ‘Off’ state, the modulator will pass through the ‘Warm-up’ state.
To achieve the ‘HV On’ state, the HV PSU must be powered, or else the modulator will remain in the ‘Hot
Standby’ state at the completion of the warm-up period.
‘Drive Enable/Inhibit’ Button
Click the DRIVE ENABLE button to command the modulator to the ‘Pulsing’ state.
From the ‘Off’ state, the modulator will pass through the ‘Warm-up’ state.
To achieve the ‘Pulsing’ state, the HV PSU must be powered, or else the modulator will remain in the ‘Hot
Standby’ state at the completion of the warm-up period.
Click the DRIVE DISABLE button to command the modulator to the ‘HV On’ state from the ‘Pulsing’ state.
‘Remote / Local’ Button
Click the REMOTE button to select ‘Remote’ mode.
Note: For all of the above controls to be functional, the modulator must be in ‘Remote’ mode.
Click the LOCAL button to select ‘Local’ mode to allow control from the local user interface.
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Modulator Parameters Tab
Click the tab to view.
Heater Voltage (V)
The magnetron heater voltage value will decrease with increasing magnetron mean power.
This voltage can be zero under normal running conditions, but will increase rapidly if pulsing is inhibited.
Heater Current (A)
This is the magnetron heater current, whose value will decrease with increasing magnetron mean power.
This current can be zero under normal running conditions, but will increase rapidly if pulsing is inhibited.
Electromagnet Current (A)
The electromagnet current sets the HV PSU voltage prior to entering the pulsing state. As the electromagnet
current is increased or decreased, the HV PSU Set Level voltage increases or decreases. It is not
recommended that the Electromagnet Supply be adjusted while the system is in the Pulsing State, and the
magnetron operating.
HV PSU Set Level (kV)
This is the command voltage sent from the control unit to the HV PSU to set the HV level. It is dependent on
several factors, including the electromagnet current, the requested magnetron running level and the type and
condition of the magnetron.
HV PSU Voltage (kV)
This is the reported HV PSU output voltage.
HV PSU Current (mA)
This is the reported HV PSU output current.
HV PSU Mean Power (kW)
The calculated HV PSU mean power from the reported HV PSU voltage and current.
HV PSU Temperature (°C)
This is the reported HV PSU heatsink temperature.
Pulse Amplitude Drive (s)
The pulse amplitude drive is an alternative method of setting the required magnetron current running level.
This is a configuration specific parameter and comprises a 0 – 700 µs pulse relating to a 0 to full-scale
magnetron current.
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Elapsed Hours Tab
Click the tab to view.
The elapsed hours are counted for the following modulator states:
Off
Standby (comprising warm-up, warm standby, hot standby and fault)
HV enabled
Pulsing
Elapsed hours are measured within the control unit, and calculated for each state. The information is stored
in non-volatile RAM and E2PROM.
Control Software Revision and Build
The version and build date of the embedded AMMOS operating system, and the AMMBLD boot loader
software are displayed here.
Modulator Details
Details on component types, serial number and selected configuration are displayed here:
Control Unit Type:
MPT5838/9 CRx (x = A, B etc.)
Serial Number:
Of Control Unit. In the form 123-4567
Power Supply Type:
MPT5838/9 PSUD
Configuration Details:
The selected configuration number and magnetron type
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AMM System Fault and Status Classifications
(Compatible with AMMOS v4.03 and above, AMCON1 v1.38 and above, AMCON8 v1.58 and above, AMCON v1.11)
MAJOR FAULTS (pulsing disabled, hv disabled, heater disabled)
6
Cause
Name
heater short circuit 1, 7
Heater under voltage detection
1, 7
Heater over voltage detection
heater open circuit
heater / LV psu fault
Heater + LT PSU not connected (SK7/SK8)
modulator stack fault
High stack leakage current
modulator over temperature
Modulator oil temperature >50 °C nom
oil over pressure
Modulator internal pressure too high
3
Number of magnetron arc trips exceeds limit
arc trip limit exceeded
no arc fibre
No response from arc fault fibre-optic
system inhibited
Control system unable to find a valid configuration
DOS name
htr u/c
htr o/c
htr psu
stack o/l
mod o/t
oil o/p
trip limit
no arc fibre
PL5
29
30
13
31
32
33
3
MINOR FAULTS (pulsing disabled, hv disabled)
Name 6
Cause
hv psu summary fault
Logical OR of the following HV PSU faults
phase loss 7
Missing or low 400 V phase
7
Interlock at rear of HV PSU open
interlock open
7
load fault
Open / short HV PSU output
7
HV PSU temperature switch >50 °C nom
temperature fault
heatsink thermostat fault 7
HV PSU cooling impaired
7
HV PSU load arc (Spellman)
load arc
internal arc 7
HV PSU internal arc (LEMI)
7
HV PSU inverter over current
inverter over-current
over-voltage fault 7
HV PSU output voltage >60 kV nom.
7
HV PSU rail voltage not ready
voltage not ready
feedback connector fault 7
HV PSU connector not home (Spellman)
tank pressure high
HV PSU transformer pressure (LEMI)
DOS name
hvps sum
hvps phase
hvps i/l
hvps load
hvps o/t
hvps fan
hvps arc
hvps arc
hvps inv o/c
hvps o/v
hvps vnr
hvps con
hvps bellows
PL5
12
4
external interlock
electromagnet undercurrent 1, 7
1
mean power limit
no magnetron current
no drive present 2
pulse too long 2
2
pulse too short
User interface interlock open
Signal from current shunt ≤10 A default
Voltage x current limit exceeded
No magnetron current after 30 pulses
No trigger pulse at SK3a / D9
HV drive pulse at SK1a >700 µs
Trigger pulse at SK3a / D9 <1 µs
ext i/l
magnet u/c
p/lim
mag start
no drive
pulse o/l
pulse u/l
18
23
22
ARC FAULTS (pulsing disabled)
Name 6
excessive magnetron arcing 3
Cause
Arc count exceeded = 1 trip (see trip limit)
DOS name
arcing
PL5
35
WARNINGS
Name 6
peak current limit1
1
hv psu voltage limit
magnetron arc 5
Cause
Requested magnetron peak current exceeded
Requested voltage exceeds magnetron limit
Modulator stack current >150 A / 250 A
DOS name
i/lim
v/lim
sys arc
PL5
21
20
34
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ADVISORY
Name 6
system summary fault
voltage regulation
current regulation
hv psu inhibited
hv psu on
hv psu off
hv psu end of charge
magnetron current present
drive present
+15V control rail established
Cause
Logical OR of all the faults
HV PSU in voltage regulation mode
HV PSU in current regulation mode
HV PSU inhibited
HV PSU output enabled
HV PSU output disabled
EOC of storage capacitor for demanded HV
Magnetron current pulse present at SK2a
Trigger pulse present at SK3a / D9
HV PSU control interface active
1
2
3
4
Factory set parameter to suit magnetron type
Parameter is system configuration dependent
5
Model dependent parameter MPT5838/39
7
Displayed as a masked fault (AMMOS v4.03)
DOS name
FAULT
hvps vreg
hvps ireg
hvps inh
hvps on
hvps off
hvps eoc
imag ok
drive ok
PL5
17
26
Function is system configuration dependent
Factory set jumper override
6
Name used in new AMM control software package
8
Unsupported DOS programs
Optical interface D03, D04, D09-D16 is system configuration dependent
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Uploading Software to The Control Unit
Once the Control Unit Operating System update program has been installed as detailed in Chapter 6 Installing, run the OSUpdate.exe file to run the program.
The following screen will appear:
Connect the control unit to the PC via a suitable cable, as detailed in Chapter 6 – Communication Lead.
Power the unit, select the appropriate COM port and click ‘Search’.
The software versions for both the boot/loader and the control unit operating system should now appear.
Three options are offered:
Upload operating system
Restore old operating system
Restore reference operating system
Uploading a New Control Unit Operating System
1. Click the ‘Upload O/S’ button to commence the process.
2. Navigate to the location of the operating system file for installation. This file will have a name of the form
ammosxxx.hex, where xxx is the software version (ammos4.04.hex for example).
3. ‘Open’ the operating system for the upload.
The upload will take approximately 60 seconds. The operation may be cancelled at any time during this
60-second period by clicking ‘Abort’. The installed operating system will not be affected.
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4. At the completion of the upload, the following erase/copy (program) sequence is invoked:
Step 1:
Step 2:
Step 3:
Step 4:
Erase the old restorable operating system from flash memory sectors SA2+3.
Copy current operating system for future restoration to flash memory sectors SA2+3.
Erase current operating system from flash memory sector SA0+1.
Copy new operating system to flash memory sectors SA0+1.
5. When the update is complete, click the ‘OK’ box.
6. Click ‘Yes’ to restart the operating system.
7. If the operating system update has been successful, the Control Unit will start up as normal.
The display will change to reflect the new operating system version.
Restoring a Control Unit Operating System
Two options are available in restoring a control unit operating system. Either is available from control buttons
on the OS Update utility.
Restore the previously overwritten operating system (Restore old O/S) or restore the reference operating
system (Restore Reference O/S).
Restore old O/S would be used when a new upload of a control unit operating system causes problems.
Using this function returns to the previous version.
Restore Reference O/S would be used when corruption has occurred of the present or old versions of control
unit operating system. Using this function returns to a benchmark operating system, to enable a new
operating system to be installed.
Select either ‘Restore old O/S’ or ‘Restore Reference O/S’ to start the process.
When the restoration is complete, click OK to proceed and OK again to restart the operating system.
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CHAPTER 7 - REMOTE OPERATION
This Chapter covers Remote Operation of the system via the serial communications link available on the
Control Unit connector SK6.
Data Format
The format is:
1 start bit
7 data bits with most significant bit sent as EVEN parity
1 stop bit
Which can be realised as:
1 start bit
7 data bits
EVEN parity
1 stop bit
Data Rate
The default data rate is 9600 baud but other baud rates may be selected using the appropriate command.
Generalised Message Format
<delimiter
delimiter
Address:
Command:
Data:
Checksum:
address command data
<delimiter
checksum
Function
ASCII
Hex
Start of text
<STX>
2h
End of text
<ETX>
3h
Acknowledge
<ACK>
6h
Not acknowledge
<NAK>
15h
The unique address of the Control Unit in the range:
DEC: 48 to 111
ASCII: O to o
Hex: 30h to 6Fh
The Control Unit will respond only to messages containing this address and will
ignore all other messages.
A character specifying a particular function for the Control Unit to perform. The
character can be in the range:
ASCII: 0 to <DEL>
Hex: 30h to 7Fh
A parameter qualifying a command or data returned in response to a command.
Characters can be in the range:
ASCII: <SP> to <DEL>
Hex: 20h to 7Fh
Bit-by-bit exclusive OR of all characters in message between and including the
delimiters. Characters can be in the range:
ASCII: <NUL> to <DEL>
Hex: 0h to 7Fh
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Command Message Format
<STX>
address command <ETX> checksum
Command message with no qualifying data
<STX>
address command data <STX> checksum
Command message including a qualifying parameter
Response Message Format
All valid command messages are acknowledged in the following forms. The address and command
characters are a reiteration of those in the command message.
<ACK>
address command <ETX> checksum
Simple acknowledgment
<ACK> address command data <ETX> checksum
Acknowledgment with data
Any unrecognised or unexecutable commands will be acknowledged in the form shown below.
<NAK> address command data <ETX> checksum
Not acknowledged, with explanation for the command rejection
Any command containing a parity, framing, overrun or checksum error will be ignored and consequently the
master must reissue the command.
Message Timing
The maximum time between each character of a message must not excess 10 ms, and a pause of 10 ms
minimum should be inserted after a command message to allow units to recognised bus inactivity between
commands.
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Summary of Command Messages
Command
ASCII
HEX
Read Identity
Returns a 4-character modulator identity and a 2-character
software issue.
For example - 583902 that defines the modulator type
(MPT5839) and operating system issue (2)
0
30
Data Request
Read Status
Returns modulator and sub-system status as a 16-character
string. The status includes running conditions, warnings,
faults, configuration etc.
1
31
Data Request
Read Boot/Loader Revision
Returns the revision of the modulator control system
boot/loader software.
For example – 1.02 [40817-1]
:3
3A33
User Status/Data Request
Read Operating System Revision
Returns the revision of the modulator control system
operating system software.
For example – 4.04 [41115-4]
:4
3A34
User Status/Data Request
Read Control System Serial Number
Returns the modulator control system serial number.
For example – 123-4567
:H
3A48
User Status/Data Request
Read Control System Type Number
Returns the modulator control system type number.
For example – MPT5838/9 CRA
:J
3A4A
User Status/Data Request
Activate Interface
The optional serial interface is normally deactivated. An
individual password for each modulator can be supplied to
activate the interface.
@
40
User Command with parameter
Read Mean Power
Returns HV PSU mean power in the form 50.0 kW.
A
41
User Status/Data Request
Read HV Voltage
Returns HV PSU HV voltage in the form 60.0 kV.
B
42
User Status/Data Request
Read Warm-Up Time
Returns magnetron cathode warm-up time in seconds.
C
43
User Status/Data Request
Read HV Current
Returns HV PSU current in the form 123 mA.
D
44
User Status/Data Request
Enable Pulsing
Places the modulator in the pulsing state, immediately from
the HV enabled state, or at the conclusion of a warm-up
delay from other states.
E
45
User Command
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Type
DAS708229AA, Version 7, page 73
Command
ASCII
HEX
Read HV PSU Temperature
Returns the HV PSU temperature in the form 50.0 C.
F
46
User Status/Data Request
Read Heater Current
Returns the magnetron heater current in the form 30.0 A.
G
47
User Status/Data Request
Set HV PSU High Mode
The HV power supply has two voltage ranges. This
command selects the high range.
This is not required for MPT5838/ 9PSUD HV PSUs.
H
48
User Command
Read HV PSU Set Level
Returns the HV PSU HV set level in the form 60.0 kV.
I
49
User Status/Data Request
Read Elapsed Hours
Returns a 30-character string representing the 5 elapsed
hour counters:
Total elapsed hours
Hours in pulsing state
Hours in HV enabled state
Hours in hot standby, warm standby, warm-up and fault
states
Hours in off state.
J
4A
Data Request
Set Display Contrast
If the modulator control unit has a front panel attached, this
command adjusts the dot-matrix display contrast, within the
range 0 (light) to 255 (dark)
K
4B
User Command with parameter
Set Local Mode
Places the modulator in local mode, allowing front panel
control.
L
4C
User Command
Set HV PSU Low Mode
The HV power supply has two voltage ranges. This
command selects the low range.
This is not required for MPT5838/ 9PSUD HV PSUs.
M
4D
User Command
Disable Pulsing
Places the modulator in the HV enabled state from the
pulsing state.
N
4E
User Command
Off
Unconditionally places the modulator in the off state from any
other state.
O
4F
User Command
Read Electromagnet Current
Returns the electromagnet current in the form 25.0 A (for
example).
P
50
User Status/Data Request
Read HV Drive Level
Returns the HV drive level in the form 700 s when the
modulator HV drive is pulse driven.
Q
51
User Status/Data Request
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Type
DAS708229AA, Version 7, page 74
Command
ASCII
HEX
Type
Set Remote Mode
Places the modulator in remote mode. Necessary when there
is no front panel control.
R
52
User Command
Hot Standby
Places the modulator in the hot standby state immediately
from either the HV enabled or pulsing state or at the
conclusion of the warm-up delay.
S
53
User Command
Read Heater Voltage
Returns the magnetron heater voltage in the form 12.3 V.
T
54
User Status/Data Request
Warm Standby
Places the modulator in warm standby state immediately or
at the conclusion of a warm-up delay.
W
57
User Command
Enable HV
Places the modulator in HV enabled state immediately from
hot standby state or at the conclusion of a warm-up delay
from other states.
X
58
User Command
Set Address
Command only active if memory address setting selected.
Systems are supplied with external address setting.
Address range: 31 to 6F Hex.
Y
59
User Command with parameter
Set Baud Rate
Command only active if memory address setting selected.
Baud Rate range: 600 to 19200 baud.
Z
5A
User Command with parameter
Data/status requests will be serviced with the modulator in either local or remote mode. However, for other
commands to be executed (with the exception of remote enable), the modulator must be in remote mode.
Commands will be rejected as un-executable with the modulator in local mode.
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DAS708229AA, Version 7, page 75
Examples of Command and Response Messages
Examples for each command type are given in a generalised, ASCII and hexadecimal form using the
address 5 (35H) for the specific examples. The expected response message for each command is shown
using the same format. ASCII non-printable characters are enclosed thus <>.
The final character in each example is the checksum.
User Commands (no return of data)
For example: Hot standby (S)
Command
General :
<STX> address S <ETX> checksum
ASCII:
<STX>5S<ETX>g
Hexadecimal: 02 35 53 03 67
Response
General:
ASCII:
Hexadecimal:
<ACK> address S <ETX> checksum
<ACK>5S<ETX>c
06 35 53 03 63
User Status / Data Request (Command Message Requesting Data)
For example: Read HV voltage (B)
Command
General
<STX> address B <ETX> checksum
ASCII
<STX>5B<ETX>v
Hexadecimal 02 35 42 03 76
Response
General
ASCII
Hexadecimal
<ACK> address B xx.xkV <ETX> checksum
<ACK>5B30.4kV<ETX>V
06 35 42 33 30 2E 34 6B 56 03 56
Universal Command Message Requesting Data
For command: Read Modulator Type (0)
Command
General
<STX> address 0 <ETX> checksum
ASCII
<STX>50<ETX><EOT>
Hexadecimal 02 35 30 03 04
Response
General
<ACK> address 0 AAAABB <ETX> checksum
ASCII
<ACK>50583805<ETX><ETX>
Hexadecimal
06 35 30 35 38 33 38 30 35 03 03
The device type is returned as: AAAABB
Modulator type AAAA with control software issue BB
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DAS708229AA, Version 7, page 76
Universal Command Message Requesting Status
For command: Read Modulator Status (1)
Command
General
<STX> address 1 <ETX> checksum
ASCII
<STX>51<ETX><ENQ>
Hexadecimal 02 35 31 03 05
Response
General
<ACK> address 1 D1D2D3D4D5D6D7D8D9D10D11
D12D13D14D15D16 <ETX> checksum
ASCII
<ACK>51C@@@HHL@@@@@E<ETX> I
Hexadecimal 06 35 31 43 40 40 40 48 40 48 4C 42 40 40 40
40 40 40 40 45 03 49
D1
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
(parity)
1
0
0
HV PSU summary fault
System summary fault
Pulsing enabled
HV on
D2
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
(parity)
1
0
0
Hot standby
Warm standby
Warm-up
Off
D3
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
(parity)
1
0
0
Heater PSU fault
Arc trip limit exceeded
Magnet under-current
HV PSU over-current
D4
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
(parity)
1
0
0
Mean power limit warning
HV voltage limit warning
Peak current limit warning
External interlock open
D5
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
(parity)
1
0
0
0
0
Modulator over-temperature
Excessive arcing
D6
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
(parity)
1
0
0
Oil over-pressure
Modulator stack fault
Heater short
Heater open
D7
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
(parity)
1
0
0
Magnetron current OK
Mean power limit
HV PSU current regulation
HV PSU voltage regulation
D8
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
(parity)
1
0
0
HV PSU EOC (end of charge)
HV PSU on
HV PSU off
HV PSU inhibited
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DAS708229AA, Version 7, page 77
D9
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
(parity)
1
0
0
HV PSU current clamp on
HV PSU voltage clamp on
HV PSU supply established
HV PSU temperature fault
D10
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
(parity)
1
0
0
HV PSU load fault
HV PSU interlock open
HV PSU phase loss
HV PSU summary fault
(parity)
1
0
0
HV PSU load/internal arc1
HV PSU fan fault
Pulse too short
HV PSU HV over-voltage
(parity)
1
0
0
Drive OK
System arc
System inhibited
Magnetron start fault
D11
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
HV PSU connector/bellows fault1
HV PSU voltage not ready
HV PSU inverter over-current
D12
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
D13
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
(parity)
1
0
0
Engineering mode selected
HV PSU supply
No arc fibre
Pulse too long
D14
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
(parity)
1
0
0
D15/D16 System configuration
Configuration = 16(D15 – 64) + (D16 – 64)
(Configuration = 16(D13 – 64) + (D14 – 64))
1
Function differs depending upon power supply type.
Command Message Requesting A Long Data String
For command: Elapsed hours? (J)
Command
<STX> address J <ETX> checksum
Response
<ACK> address J TOPLHESBOF <ETX> checksum
TO
PL
HE
SB
OF
Character
00 – 06
07 – 13
14 – 20
21 – 27
28 – 34
© e2v technologies (uk) limited 2015
Bytes
T00000<SP>
P00000<SP>
H00000<SP>
S00000<SP>
O00000<SP>
Data
Total elapsed hours
Hours in pulsing state
Hours in HV enabled state
Hours in standby state
Hours in off state
Document subject to disclaimer on page 1
DAS708229AA, Version 7, page 78
Command Message Passing a Parameter
For example: Set Address (Z=nnn)
Command
General
<STX> address Z=nnn <ETX> checksum
ASCII
<STX>5Z=49<ETX>^
Hexadecimal
02 35 5A 3D 34 39 03 5E
Response
General
ASCII
Hexadecimal
<ACK> address Z <ETX> checksum
<ACK>5Z<ETX>j
06 35 5A 03 6A
The = (equals) character is used as a delimiter to indicate to the command parser that numerical data
follows.
If the = is omitted, or if no data follows, the command will be considered invalid and a not acknowledge
(NAK) response sent.
Response to an Invalid Command Message
Command messages will be classed as invalid if the command is not recognised, a parameter is out of range
or not numeric or the command cannot be executed. For example, if a command that is not part of the
modulator command set is used, the response will be as follows:
Command
General
ASCII
Hexadecimal
<STX> address U <ETX> checksum
<STX>5U<ETX>a
02 35 55 03 61
Response
General
ASCII
Hexadecimal
<NAK> address U D1 <ETX> checksum
<NAK>5Up<ETX><ACK>
15 35 55 70 03 06
D1 is a byte representing the invalid command code. It is defined as follows:
D1
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
(parity)
1
0
0
0
0
0
=1 command not executed
=0 command/data invalid
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DAS708229AA, Version 7, page 79
APPENDIX A - USER INTERFACE PIN DESIGNATIONS
Control Unit Reference: PL5
37-way D-Type Plug.
Note: All Digital Fault Indicator Outputs are internally pulled LOW to indicate the Fault condition, and all
Digital Status Indicator Outputs are internally pulled LOW to indicate a TRUE Status condition.
Description
37-way
D-Type
Type
Do Not Connect +15 V(b)
1
-
0 V(b) Connection
2
Power Supply
Trip Limit Exceeded
3
Digital Fault Indicator Output
Requirements
Off
4
Digital Control Input
Momentary Switch (>10 ms)
Warm-up
5
Digital Control Input
Momentary Switch (>10 ms)
HV PSU Hi/Lo Mode
6
Level Control Input
0 V = Lo Mode +5 V = Hi Mode
HV Enable
7
Digital Control Input
Momentary Switch (>10 ms)
Drive Enable
8
Digital Control Input
External Interlock
9
Level Control Input
Momentary Switch (>10 ms)
Connect to 0 V to close Interlock.
+5 V = Interlock Open (Fault)
Internal pull up.
Drive Source Select
10
Level Control Input
Pulse Amplitude Control
11
Analogue Control Input
HV PSU Summary Fault
12
Digital Fault Indicator Output
LV/Heater PSU Fault
13
Digital Fault Indicator Output
Power On
14
Digital Status Indicator Output
Off
15
Digital Status Indicator Output
Hot Standby
16
Digital Status Indicator Output
System Summary Fault
17
Digital Fault Indicator Output
External Interlock
18
Digital Fault Indicator Output
No Connection
19
-
HV Voltage Limit
20
Digital Fault Indicator Output
Peak Current Limit
21
Digital Fault Indicator Output
Mean Power Limit
22
Digital Fault Indicator Output
Electromagnet Current Low
23
Digital Fault Indicator Output
HV PSU On
24
Digital Status Indicator Output
Pulsing
25
Digital Status Indicator Output
HV PSU Current Regulation
26
Digital Fault Indicator Output
Warm Standby
27
Digital Status Indicator Output
Warm-up
28
Digital Status Indicator Output
Heater Open
29
Digital Fault Indicator Output
Heater Short
30
Digital Fault Indicator Output
Modulator Stack Fault
31
Digital Fault Indicator Output
Modulator Over-Temperature
32
Digital Fault Indicator Output
Oil Over-Pressure
33
Digital Fault Indicator Output
Magnetron Arc
34
Digital Fault Indicator Output
Excessive Arcing
35
Digital Fault Indicator Output
No Connection
36
-
No Connection
37
-
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0 V = Use BNC Input
+5 V = Use Fibre-Optic Input
0 V to 10 V DC
DAS708229AA, Version 7, page 80
APPENDIX B - HV PSU PIN DESIGNATIONS
Control Unit Reference: PL6
37-way D-Type Plug
Note: There are no user connections available on this interface, and it must be connected to the HV PSU for
correct system operation.
Description
37-way
D-Type
Type
Requirements
Analogue Level Input
6.5kV / V
Inhibit
Current Regulation
End Of Charge (EOC)
Over-voltage
Inhibit
Enable/Reset
HV PSU High/Low Mode
HV On
1
2
3
4
5
6
7
8
9
10
+15 V DC
11
Power Supply Output
0V
Current Monitor
HV PSU +15 V
Temperature Monitor
Temperature Fault
Interlock Open
Load Fault
Summary Fault
NOT Inhibit
Phase Loss
Voltage Program
HV Off
Voltage Regulation
12
13
14
15
16
17
18
19
20
21
22
23
24
Power Supply
Analogue Level Input
Digital Status Indicator Input
Analogue Level Input
Digital Fault Indicator Input
Digital Fault Indicator Input
Digital Fault Indicator Input
Digital Fault Indicator Input
Digital Control Output
Digital Fault Indicator Input
Analogue Control Output
Digital Status Indicator Input
Digital Status Indicator Input
-15 V DC
25
Power Supply Output
Thermostat Fault
HV PSU Arc
Inverter Over-Current
Voltage Not Ready (VNR)
HV Feedback Fault
26
27
28
29
30
31
32
33
34
35
36
37
Digital Fault Indicator Input
Digital Fault Indicator Input
Digital Fault Indicator Input
Digital Fault Indicator Input
Digital Fault Indicator Input
Voltage Monitor
© e2v technologies (uk) limited 2015
Digital Status Indicator Input
Digital Status Indicator Input
Digital Status Indicator Input
Digital Fault Indicator Input
Digital Control Output
Digital Control Output
Digital Control Output
Digital Status Indicator Input
Document subject to disclaimer on page 1
Not connected to K503. Voltage
derived on Maintained Supply
Board. (DAS701137AA)
0 to 10 V = 15 – 65 C
Not connected to K503. Voltage
derived on Maintained Supply
Board. (DAS701137AA)
DAS708229AA, Version 7, page 81
APPENDIX C - RS 485 INTERFACE PIN DESIGNATIONS
Control Unit Reference: SK6
Description
9-way D-Type Plug
9-way
D-Type
Type
0 V(b) connection
1
Case Ground
No Connection
2
-
RX +
3
From Master +
TX +
4
To Master +
0 V(b) connection
5
Signal Ground
TX -
6
To Master -
No Connection
7
-
No Connection
8
-
RX -
9
From Master -
Requirements
APPENDIX D - OIL PUMP/PRESSURE PIN DESIGNATIONS
Control Unit Reference: PL24
Description
9-way D-Type Plug
9-way
D-Type
Type
Pump Control
1
Digital Control Output
No Connection
2
-
Oil Pressure
3
Digital Control Input
No Connection
4
-
No Connection
5
-
No Connection
6
-
+12 V(g) DC connection
7
Power Supply
No Connection
8
-
0 V(g) connection
9
Power Supply
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Requirements
DAS708229AA, Version 7, page 82
APPENDIX E - LV PSU PIN DESIGNATIONS
Control Unit Reference: SK7
15-way size D-Type Plug – Mixed D
Description
15-way
D-Type
Type
Primary LV PSU Power
A1
AC Power signal
Primary LV PSU Power
A2
AC Power signal
Interlock (from +12 V)
1
Link
Interlock (to SK8)
2
Link
No Connection
3
-
No Connection
4
-
No Connection
5
-
Requirements
Pins 1 and 2 linked together.
APPENDIX F - HEATER PIN DESIGNATIONS
Control Unit Reference: SK8
15-way size D-Type Plug – Mixed D
Description
15-way
D-Type
Type
Primary Heater Power
A1
Power signal
Primary Heater Power
A2
Power signal
No Connection
1
-
No Connection
2
-
No Connection
3
-
Interlock (from SK7)
4
Link
Interlock (to thermal switch)
5
Link
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Requirements
Pins 4 and 5 linked together.
DAS708229AA, Version 7, page 83
APPENDIX G - BNC CONNECTION LAYOUT
BNC Connectors located on front panel of the Control Unit:
HV Drive Pulse
(0 – 700 s)
Magnetron
Current Pulse
Input
Modulator Drive
Input (option)
Primary Current
Feedback
Magnetron
Current Pulse
Monitor Output
SK1A
SK2A
SK3A
SK4A
SK5A
Trigger Monitor
Output
Magnetron
Voltage Pulse
Input
HV PSU Voltage
Monitor Output
Electromagnet
Current Input
Magnetron
Voltage Pulse
Monitor Output
SK1B
SK2B
SK3B
SK4B
SK5B
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DAS708229AA, Version 7, page 84
APPENDIX H - PRODUCT COMPLIANCE (EMC AND SAFETY)
Safety
The components of the MPT5838/9 system adhere to Class 1 BS EN 60601-1:1990 +Amd. Nos. 1, 2 and 3 +
Corr. No. 1 Safety requirements. However, comprehensive assessment should be performed by the system
installer on the completed equipment.
EMC
In-house assessment has been performed on the MPT5838/9 System to the following EMC standards:
BS EN 60601-1-2:2002 + Amd. No. 1 EMC
CFR 47 FCC Part 18
This assessment has been done under the assumption that all cable connected to the MPT5838/9 should be
no longer than 3 m.
Special precautions are needed in regards to medical equipment and this system should be installed in view
of the EMC information provided below.
The MPT5839 Modulator is intended for use in the electromagnetic environment specified
below. The customer or the user of the MTP5839 Modulator should assure that it is used in
such an environment.
Compliance
Electromagnetic
environment - guidance
RF emissions
CISPR 11
Group 2
The MPT5839 Modulator
must emit electromagnetic
energy in order to perform its
intended function. Nearby
electronic equipment may be
affected.
Conducted emissions
CISPR 11
Class B
Harmonic emissions
IEC 61000-3-2
Not applicable
Voltage fluctuations/ flicker
emissions
IEC 61000-3-3
Not applicable
Emission Tests
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The MPT5839 Modulator
controller is suitable for use in
all establishments other than
those domestic and those
directly connected to the
public low-voltage power
supply network that supplies
buildings used for domestic
purposes.
DAS708229AA, Version 7, page 85
The MPT5839 Modulator controller is intended for use in the electromagnetic environment specified
below. The customer or the user of the MTP5839 Modulator controller should assure that it is used
in such an environment.
IEC 60601
Test Level
Compliance
Electromagnetic environment guidance
Electrostatic
discharge (ESD)
IC 61000-4-2
4.4 kV contact
8 kV air
Electromagnetic
current BNC
connector found
to be susceptible
to contact
discharges.
Floors should be wood, concrete or
ceramic tile. If floors are covered
with synthetic material, the relative
humidity should be at least 30%.
Electrical fast
transients/burst
IEC 61000-4-4
2 kV for power
supply lines
Pass –
No change in
operational state.
Mains power quality should be that
of a typical commercial or hospital
environment.
Surge
IEC 61000-4-5
1 kV differential
mode
2 kV common
mode
Pass –
No change in
operational state.
Mains power quality should be that
of a typical commercial or hospital
environment.
Pass No change in
state for 30%,
60% and 0.5 s
95% dips. Unit
automatically
resets after 5 s
mains interrupt.
Mains power quality should be that
of a typical commercial or hospital
environment. If the user of the
MPT5838/9 controller requires
continued operation during power
mains interruptions, it is
recommended that the MPT5838/9
controller be powered from an
uninterruptible power supply, or a
battery.
Immunity Tests
<5% Ut
(>95% dip in Ut)
for 0.5 cycle
Voltage dips, Short
interrupts and
voltage variations
on power supply
input lines
IEC 61000-4-11
40% Ut
(60% dip in Ut)
for 5 cycles
70% Ut
(30% dip in Ut)
for 25 cycles
<5% Ut
(>95% dip in Ut)
for 5 s.
Note: Ut is the AC mains voltage prior to application of the test level.
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DAS708229AA, Version 7, page 86
The MPT5839 Modulator controller is intended for use in the electromagnetic environment specified
below. The customer or the user of the MTP5838/9 Modulator controller should assure that it is used
in such an environment.
Immunity Tests
Conducted RF
IEC 61000-4-6
Radiated RF
IEC 61000-4-3
IEC 60601
Test Level
3 Vrms
150 kHz to
80 MHz
3 V/m
80 MHz to
2.5 GHz
Compliance
System not able to
operate with levels
of 3 Vrms between
0.25 and 10 MHz,
though recovers
without assistance
when interference
source is
removed.
Acceptance for
medical and
industrial use will
need to be
checked by the
systems installer.
Electromagnetic environment guidance
Portable and mobile RF communication
equipment should be used no closer to
any part of the MPT5838/9, including
cables, than the recommend separation
distance calculated from the equation
applicable to the frequency of the
transmitter.
Recommended separation distance
d  1 .2 P
Where P is the maximum output power
rating of the transmitter in watts (W)
according to the transmitter manufacturer
and d is the recommended separation
distance in metres (m).
Field strengths fixed RF transmitters, as
determined by an electromagnetic site
survey, should be less than the
compliance level in each frequency
range.
The MPT5839 has not been tested for
radiated immunity. Radiated immunity
tests must be performed on system
installation.
Portable and mobile RF communication equipment may affect operation of medical electrical equipment.
Use of accessories, transducers and cable other than that specified by e2v technologies may increase
product emissions or decrease product immunity.
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DAS708229AA, Version 7, page 87