PACS Software for RVP-4
Software Manual
Version 1.0.0.
11.05.2007
Before installing and operating the system, please read this software manual and the
operating instructions carefully. BARTEC BENKE cannot accept liability for injuries or
damages caused by failure to observe the software manual and the operating instructions
and safety precautions.
We have checked the information in this document carefully to ensure its completeness
and correctness. However, as alterations may occur due to technical improvements, we
cannot accept liability for complete consistency. This software manual does not constitute
any obligation or guarantee of performance on the part of BARTEC BENKE.
The software manual and the operating instructions were compiled according to the
requirements defined in the EU Directive 94/9/EG, Appendix II.
For translations into other languages, the German version is to be regarded as the original
document.
If you have any problems or questions, please contact:
BARTEC BENKE GmbH
Borsigstraße 10
21465 Reinbek/Hamburg
Germany
Tel.:
Fax:
E-Mail:
+49 (0) 40 - 72703 - 0
+49 (0) 40 - 72703 - 363
service@bartec-benke.de
© 2007 BARTEC BENKE GmbH, Reinbek. All rights reserved.
This software manual is copyrighted. This document may not be reproduced or
transmitted, neither whole nor in parts, by any electronic, mechanical or other means,
without prior written permission from BARTEC BENKE GmbH. The manufacture of any
component with the aid of this manual without prior written permission is also prohibited.
Inhalt
I
Contents
1
2
3
4
Introduction to PACS..........................................................................1
1.1
Application Area and Properties ......................................................................... 2
1.2
Touch Panel........................................................................................................ 3
Design and Function of the RVP-4 ....................................................5
2.1
Measuring Principle of the RVP-4 Analyzer ....................................................... 6
2.2
Design of the RVP-4 Analyzer ............................................................................ 7
2.2.1 Temperature control system.................................................................... 8
2.2.2 Measuring cell ......................................................................................... 8
2.2.3 Drive mechanism..................................................................................... 8
2.2.4 Valves ...................................................................................................... 9
2.2.5 Control of the Pneumatic Cylinders....................................................... 11
2.2.6 Position Feedback ................................................................................. 12
2.3
Process Flow .................................................................................................... 13
2.3.1 Process Diagram ................................................................................... 13
2.3.2 Program Start ........................................................................................ 15
2.3.3 StartUp .................................................................................................. 15
2.3.4 Wait Coarse Temperature ..................................................................... 15
2.3.5 Standby ................................................................................................. 16
2.3.6 Wait Fine Temperature.......................................................................... 16
2.3.7 Flushing ................................................................................................. 16
2.3.8 Filling ..................................................................................................... 17
2.3.9 Expand .................................................................................................. 17
2.3.10 Measure................................................................................................. 17
2.3.11 Ready .................................................................................................... 17
2.3.12 Safe State .............................................................................................. 18
First Steps with PACS ......................................................................19
3.1
Starting PACS................................................................................................... 20
3.2
Watchdog Module ............................................................................................. 21
3.3
Defining User Rights ......................................................................................... 22
3.4
Exiting PACS .................................................................................................... 22
PACS Overview .................................................................................25
4.1
Definitions: Streams, Parameters and Conversion........................................... 26
4.2
The PACS Main Window .................................................................................. 27
4.2.1 Local System Control ............................................................................ 28
4.2.2 Sample Streams .................................................................................... 28
4.2.3 Validation ............................................................................................... 29
4.2.4 Process Status and System Control...................................................... 30
4.2.5 Graphical Display of the Measuring Results ......................................... 32
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PACS Software for RVP-4
II
Inhalt
5
6
7
8
9
The PACS Menu................................................................................ 35
5.1
The IO Menu ..................................................................................................... 36
5.1.1 IO - Test ................................................................................................. 37
5.1.2 IO - Log .................................................................................................. 39
5.1.3 IO - Configuration .................................................................................. 40
5.1.4 IO Modbus (optional) ............................................................................. 46
5.2
The Configure Menu ......................................................................................... 47
5.2.1 Configure - Parameters ......................................................................... 49
5.2.2 Configure - Controller ............................................................................ 51
5.2.3 Configure - Alarms................................................................................. 52
5.2.4 Configure - Validation ............................................................................ 53
5.3
The Report Menu .............................................................................................. 54
5.3.1 Report - Report ...................................................................................... 54
5.3.2 Report - Pressure Plot ........................................................................... 57
5.3.3 Report - Controller Values Plot .............................................................. 59
5.3.4 Report - Add Message to LogBook ....................................................... 60
5.4
The Utilities Menu ............................................................................................. 61
5.4.1 Utilities - Manual Controller Operation................................................... 61
5.4.2 Utilities - Manual Process Operation ..................................................... 62
5.5
The Accesslevel Menu ...................................................................................... 64
5.5.1 Changing the Expert Password ............................................................. 65
5.6
The Help Menu.................................................................................................. 66
Process Control System Interface .................................................. 69
6.1
Analog inputs .................................................................................................... 70
6.2
Analog output .................................................................................................... 70
6.3
Digital inputs...................................................................................................... 71
6.4
Digital outputs ................................................................................................... 72
Options.............................................................................................. 73
7.1
Modbus Interface .............................................................................................. 74
7.2
Remote maintenance interface ......................................................................... 74
Troubleshooting ............................................................................... 75
8.1
Error Monitoring in PACS.................................................................................. 76
8.2
Software error ................................................................................................... 76
8.3
Error messages from the analysis process....................................................... 78
Program Parameters ........................................................................ 83
9.1
Notes ................................................................................................................. 84
9.2
General Parameters.......................................................................................... 85
PACS Software for RVP-4
Version 1.0.0., 11.05.2007
Abbildungsverzeichnis
III
Figures
Figure 1.1:
Touch panel ......................................................................................3
Figure 2.1:
Flow diagram ....................................................................................7
Figure 2.2:
Process Diagram.............................................................................. 14
Figure 3.1:
Watchdog Module............................................................................ 21
Figure 4.1:
PACS Main Window.......................................................................... 27
Figure 5.1:
PACS – IO Menu.............................................................................. 36
Figure 5.2:
PACS - Testing Digital and Analog Inputs and Outputs ....................... 37
Figure 5.3:
PACS – Record Analog Input Signals ................................................. 39
Figure 5.4:
PACS - Configuring Digital and Analog Inputs and Outputs................. 41
Figure 5.5:
PACS - Modbus Application............................................................... 46
Figure 5.6:
PACS - Modbus Data........................................................................ 46
Figure 5.7:
PACS - Configure Menu .................................................................... 47
Figure 5.8:
PACS - Configuration of General Parameters ..................................... 49
Figure 5.9:
PACS – Configuring the Controller..................................................... 51
Figure 5.10:
PACS - Alarm Table ......................................................................... 52
Figure 5.11:
PACS – Configure Validierung ........................................................... 53
Figure 5.12:
PACS - Report Menu ........................................................................ 54
Figure 5.13:
PACS - File Selection Window ........................................................... 54
Figure 5.14:
Report LogBook............................................................................... 55
Figure 5.15:
Report History ................................................................................. 56
Figure 5.16:
Report Alarms ................................................................................. 56
Figure 5.17:
Report Debug.................................................................................. 56
Figure 5.18:
PACS – Pressure and Temperature Plot............................................. 57
Figure 5.19:
PACS – Controller Values.................................................................. 59
Figure 5.20:
PACS – AddMessage ........................................................................ 60
Figure 5.21:
PACS – Controller Operation............................................................. 61
Figure 5.22:
PACS – Process Operation ................................................................ 62
Figure 5.23:
PACS - Help Menu ........................................................................... 66
Figure 5.24:
PACS – Selecting a Manual ............................................................... 66
Figure 5.25:
PACS – Help About .......................................................................... 67
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PACS Software for RVP-4
IV
PACS Software for RVP-4
Version 1.0.0., 11.05.2007
Introduction to PACS
1
1 Introduction to PACS
Version 1.0.0., 11.05.2007
PACS Software for RVP-4
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1.1
Introduction to PACS
Application Area and Properties
PACS (Process Analyzer Control Software) is a software application for BARTEC BENKE
process analyzers. It is designed for automatic control of the process flow in which certain
product properties (here: the vapour pressure of petrochemical products) are analyzed.
With the aid of the sensors and actuators of the analyzer, PACS controls the process flow
and displays and documents the process status and the results of the analysis.
A Watchdog module supervises PACS and, in case of an error, resets the analyzer.
Communication with the process control room and transmission of the results can be
carried out via Modbus, using an optional module.
Software Properties
PACS is based on Microsoft Windows operating systems (Windows XP or Windows 2000)
and is installed on a PC that complies with industry standard. By means of its adjustable
parameters, PACS can be configured for every specific application. Before delivery, the
system is installed and configured for the specific application by BARTEC BENKE.
It is advisable to install a software application for remote maintenance of the system via
network, modem/ISDN or serial interface. This optional interface allows the user and
BARTEC BENKE to access the system convieniently, if required, to facilitate maintenance,
configuration and system diagnosis.
Hardware Properties
PACS is installed on an industry standard PC. Depending on the specific application and
customer requirements, various hardware interfaces (network, modem/ISDN, etc.) are
implemented.
Additional Software
In addition to the operating system and PACS, further software is installed.
•
Acrobat Reader – this freeware program is started by PACS in order to display user
manuals.
Copyright © 2006 Adobe Systems Incorporated.
•
CSView – this freeware program is started by PACS in order to view tables and data
in the CSV file format.
Copyright © 2005 Diamond Computer Systems Pty. Ltd.
•
Optionally - as a commercial licence - remote control software (e.g. PC-Anywhere)
PACS Software for RVP-4
Version 1.0.0., 11.05.2007
Introduction to PACS
1.2
3
Touch Panel
The system is equipped with a touch panel which allows you to control the software
without having to use a mouse. For easier use and to avoid fingerprints on the panel, a
touch pen is supplied.
Figure 1.1:
Touch panel
The mouse functions click, double-click and drag and drop are similar to the use of a
normal mouse.
A right-click is carried out by first clicking on a mouse icon
and then on the element to which the right-click is to be
applied. (Alternatively, click on the mouse icon in the task
tray.)
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Introduction to PACS
The mouse icon becomes
visible by opening the touch
icon in the Windows task tray
and selecting the menu
function “Event selector”.
Danger of explosion caused by electrostatic discharge!
Sparks caused by electrostatic discharge can ignite an explosive
atmosphere.
– To clean plastic parts, especially the display, always use a moist cloth,
never a dry cloth.
– Observe the cleaning instructions in the operating manual.
PACS Software for RVP-4
Version 1.0.0., 11.05.2007
Design and Function of the RVP-4
5
2 Design and Function of the RVP-4
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PACS Software for RVP-4
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2.1
Design and Function of the RVP-4
Measuring Principle of the RVP-4 Analyzer
A sample of the product is preheated or cooled to the required temperature and is then
fed into a measuring cylinder, which is usually heated to 37.8°C. By means of a measuring
piston, a defined volume is aspirated. After dosing is complete, the measuring cylinder is
closed by means of valves.
The measuring piston now retracts further and so creates a vapour area (ratio 1:4). When
the thermodynamic equilibrium has been reached, the pressure inside the measuring cell is
measured. This corresponds to the sum of the sample vapour pressure and the partial
pressure of the gases dissolved in the sample. The measured pressure is converted and
the result is displayed (see parameters P_Conversion and P_Unit).
After the measurement, the measuring cell is rinsed with product, and the next analysis
cycle starts.
PACS Software for RVP-4
Version 1.0.0., 11.05.2007
Design and Function of the RVP-4
2.2
7
Design of the RVP-4 Analyzer
The main part of the analyzer consists of the following components: temperature control
system, measuring cell, and drive mechanism. A simplified flow diagram shows the fittings,
sensors and actuators which are required to control the process flow.
Figure 2.1:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Flow diagram
Measuring cell pilot valve
Outlet valve
Inlet valve
Temperature control system
Sample heat exchanger
Peltier element
Coolant heat exchanger
Temperature sensor
Temperature fuse
Temperature limiter
Cooling medium outlet
Cooling medium inlet
Sample inlet
Temperature sensor sample
inlet
15 Temperature sensor sample
16
17
18
19
20
21
22
23
24
25
26
27
28
29
Proximity switch ExpandFW
Proximity switch ExpandBW
Proximity switch DoseBW
Proximity switch DoseFW
Instrument air inlet
Dosing cylinder
Expansion cylinder
Dose BW valve
Dose FW valve
Expand FW valve
Expand BW valve
Measuring cylinder
Measuring cell
Measuring cell temperature
sensor
30 Measuring piston
31 Pressure transmitter
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Design and Function of the RVP-4
2.2.1
Temperature control system
The temperature control system (4) controls the temperature of the sample flowing
through the system. It consists of two heat exchangers which are connected by peltier
elements (6). The sample flows continually through the sample heat exchanger (5), where
it is heated or cooled to the target temperature. The temperature is controlled via the
temperature sensor sample (15), which is situated immediately before the measuring cell.
Excess heat is lead off to the cooling medium via the coolant heat exchanger (7). Both
heat exchangers are equipped each with a temperature sensor (8), a temperature fuse (9)
which is destroyed if the temperature is too high, and a temperature limiter (switching
with hysteresis). Additionally, a temperature sensor for monitoring the sample inlet
temperature (14) is located here.
2.2.2
Measuring cell
The measuring cell (28) consists of a measuring cylinder (27) and a movable measuring
piston. The pressure transmitter (31) and the inlet and outlet valves (3, 2) are mounted
onto the measuring cylinder. The inlet and outlet valves are actuated pneumatically via the
measuring cell pilot valve (1). The measuring cell temperature is measured by means of
the measuring cell temperature sensor (29).
2.2.3
Drive mechanism
The drive mechanism for the measuring piston consists of the interconnected pneumatic
cylinders (21, 22) which are used for adjusting the position of the measuring pison inside
the measuring cylinder. 4 magnetic valves (23 ... 26) are also part of the system. To check
the final positions of the pneumatic cylinders, proximity switches (16 ... 19) are used.
PACS Software for RVP-4
Version 1.0.0., 11.05.2007
Design and Function of the RVP-4
2.2.4
9
Valves
For better understanding of the process cycle, the following table contains a short
description of the valves, which are marked with "Y". Optionally, PACS offers a stream
switching feature. The required valves are not shown in the flow diagram.
Valve / Tag Name
Function
Y_MEASURING_CELL
•
actuated: The line through the measuring cell is open.
The inlet valve has opened the line from the sample
inlet to the measuring cell, and the outlet valve is also
open. Name of this position: Flow Through
•
not actuated: The line through the measuring cell is
closed. The inlet valve has opened the line from the
sample inlet to the slop, and the outlet valve is closed.
Name of this position: FlowLocked
•
actuated: Forward pressure is applied to the dosing
cylinder.
•
not actuated: Forward pressure is released from the
dosing cylinder – it is ready for backward motion.
•
actuated: Backward pressure is applied to the dosing
cylinder.
•
not actuated: Backward pressure is released from the
dosing cylinder – it is ready for forward motion.
•
actuated: Forward pressure is applied to the expansion
cylinder.
•
not actuated: Forward pressure is released from the
expansion cylinder – it is ready for backward motion.
•
actuated: Backward pressure is applied to the
expansion cylinder.
•
not actuated: Backward pressure is released from the
expansion cylinder – it is ready for forward motion.
•
actuated: The line between validation stream and
analyzer inlet is open.
•
not actuated: The line between online stream and
analyser inlet is open.
•
actuated: The line between analyzer outlet and
validation backflow is open.
•
not actuated: The line between analyzer outlet and
validation backflow is closed.
(Measuring cell pilot
valve (1))
Y_DOSE_FW
Y_DOSE_BW
Y_EXPAND_FW
Y_EXPAND_BW
Y_Validierung
OPTION
Y_VALIDIERUNG_OUT
OPTION
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Design and Function of the RVP-4
Valve / Tag Name
Y_STREAM1
OPTION
Y_STREAM2
OPTION
Y_STREAM1_BB
Y_STREAM2_BB
Y_Validierung_BB
OPTION
PACS Software for RVP-4
Function
•
actuated: The line between stream 1 and analyser inlet
is open.
•
not actuated: The line between stream 1 and analyser
inlet is closed.
•
actuated: The line between stream 2 and analyser inlet
is open.
•
not actuated: The line between stream 2 and analyser
inlet is closed.
Same function as Y_STREAM1, Y_STREAM2, Y_Validierung.
Optional for block-and-bleed valve control.
Version 1.0.0., 11.05.2007
Design and Function of the RVP-4
Control of the Pneumatic Cylinders
The following table describes the actuation patterns for the pneumatic cylinder valves.
Actuation of the pneumatic cylinder valves
Y_EXPAND_FW
Y_EXPAND_BW
Effect of the actuation pattern
Y_DOSE_BW
Name of the
actuation pattern
Y_DOSE_FW
2.2.5
11
GoUndefined
0
0
0
0
Both ends of the cylinders are pressure-free.
The resulting position of the measuring piston is
undefined, it depends on the sample pressure.
GoClear
1
0
1
0
Both cylinders work in the forward direction. The
measuring piston moves to the forward position
– the measuring cell is emptied.
GoPrefill
1
1
1
0
Starting from the position GoClear, Y_DOSE_BW
is also actuated. This causes the rear of the
dosing cylinder to be pressurized, ready for the
following actuation pattern GoFill.
GoFill
0
1
1
0
The measuring piston moves to the dosing
position – the measuring cell is filled with
sample. If the rear of the dosing cylinder is
already pressurized (see GoPrefill), the restrictor
in line Y_DOSE_FW acts immediately. This
ensures a soft start of the movement.
GoExpand
0
1
0
1
The measuring piston moves to the expansion
position – the sample is enclosed in the
measuring cell, and the volume of the
measuring cell is increased.
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2.2.6
Design and Function of the RVP-4
Position Feedback
The final positions of the pneumatic cylinders are checked by means of several proximity
switches. For easier understanding, the defined positions are described in the following
table.
Dose
FW
Dose
BW
Expand
FW
Expand
BW
Position
Description
1
0
1
0
PosClear
The measuring piston is in
the forward position
(emptied).
0
1
1
0
PosAllot
The measuring piston is in a
position of 1/5 of the way
from the front (dosed).
0
1
0
1
PosExpand
The measuring piston is in
the backward position
(expanded).
0
0
x
x
PosUndefined
The measuring piston is not
in a final position.
x
x
0
0
1
1
x
x
PosError
Error in position feedback
(positioning not possible).
x
x
1
1
x means : The status of this proximity switch is irrelevant for this position.
PACS Software for RVP-4
Version 1.0.0., 11.05.2007
Design and Function of the RVP-4
2.3
13
Process Flow
This chapter describes the process flow of the analyzer, i.e. the program steps which are
carried out by the analyzer during an analysis cycle. The process flow is controlled by the
PACS software and displayed in the main window.
2.3.1
Process Diagram
The process diagram shows the simplified analysis process which is described in the
following sections.
The commands CMD_SafeState and CMD_Reset represent commands which stop or restart
the process flow by triggering an alarm. CMD_Reset is also triggered by starting PACS or
switching the analyzer on (Power On), or by activating the Reset input (by user / control
system), or by pressing the Reset button in the main window.
Note:
The process flow is influenced strongly by the configuration of parameters and
alarms. For further information, please refer to chapter 5.2.
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Design and Function of the RVP-4
State
Name
StreamRequest ==0 /
Outputs failsafe
Condition / output
dT > 1.5°C / Y = FlowThrough,
Piston released
StreamRequest >= 0
Alarm No Sample Flow
Alarm Over Temperature
Alarm no pressure
Power Up /
Outputs initial state
StartUp
WaitCoarse
StreamRequest < 0
Cmd = SafeState
Cmd = Reset
Cmd = Restart
Cmd = Reset
StreamRequest < 0
SafeState
Cmd != Reset /
Outputs failsafe
dTsample && dTcell < 1.5°C
Remote &&
DI-Reset /
unchanged
Alarm No Sample Flow
Alarm Over Temperature
Alarm no pressure
Standby
t > ReadyTime
Stream Request >= 0 && ! DI-Reset /
Y = FlowThrough, Piston = Clear
Alarm
No Pressure
Detected /
1. Lock & Fill,
2. Through & Undef
Alarm No Sample Flow
Alarm Over Temperature
Alarm no pressure
Ready
Alarm Wait-T Timeout
Alarm No Sample Flow
Alarm Over Temperature
Alarm no pressure
WaitFine
Vapor Pressure Detected
P and T in range
t < ReadyTime /
1. Lock & Fill,
2. Through & Undef
output results
Alarm Initial Pressure
Alarm No Sample Flow
Alarm Over Temperature
Alarm no pressure
dTsample <
FineTemperatureLimit
dTsample >= FineTemperatureLimit /
Y = FlowThrough, Piston = Clear
Alarm Piston Timeout
Alarm No Sample Flow
Alarm Over Temperature
Alarm no pressure
Measure
Flush
Not detected /
Y = Locked,
Piston = Expand
Position != CLEAR /
Y = FlowThrough,
Piston = Clear
Position == EXPAND
Wait 5 s
Position == CLEAR
Wait 10 s
Position != EXPAND /
Y = Locked,
Piston = Expand
Alarm Piston Timeout
Alarm No Sample Flow
Alarm Over Temperature
Alarm no pressure
Expand
StreamRequest
<0
none
0
stream 1
1
stream 2
2
validation
Figure 2.2:
PACS Software for RVP-4
Position != FILL /
Y = FlowThrough,
Piston = Fill
Position == FILL
Wait 5 s
Piston Positions
CLEAR
Volume = 4ml
FILL
Volume = 17.6ml
EXPAND Volume = 88ml
Released Volume undefined
Sample Valve Y
FlowThrough into cell
Locked
into slop
Process Diagram
Version 1.0.0., 11.05.2007
Fill
Alarm Piston Timeout
Alarm No Sample Flow
Alarm Over Temperature
Alarm no pressure
State
Name
Main States
PID type controllers
(P type controllers otherwise)
Design and Function of the RVP-4
2.3.2
15
Symbol
Meaning
!
not (logical negation)
&
and (logical)
<
lower than
>
higher than
==
equal
!=
not equal
Program Start
After starting the program, PACS loads the configuration parameters and the main window
settings which were active at the last program shutdown (settings for Local/Remote,
Stream selection, and Automatic on/off). The program then starts with the state StartUp.
2.3.3
StartUp
The process cycle changes to the state StartUp if one of the following events occurs: the
program is started, or the reset line is activated, or the button Reset in the main window is
activated while the process is in the state Safe State, or no sample stream is selected. In
the state StartUp, the valves, controls etc. are set to their default states (all valves not
active, heater control off). The process remains in this state until a sample stream is
selected.
As soon as a sample stream is selected, the temperature controls for the measuring cell
and the flowing sample are activated. The sample temperature is measured using the
temperature sensor before the measuring cell.
The program switches to the state Wait Coarse Temperature.
2.3.4
Wait Coarse Temperature
The inlet and outlet valves are in position FlowThrough (sample flows through the cell),
and the pneumatic cylinder valves remain unactuated (GoUndefined).
The program remains in this state until the temperatures of the measuring cell and of the
flowing sample do not deviate by more than 1.5 K from their respective target values.
The status remains active for at least 5 seconds. Next state: Standby.
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2.3.5
Design and Function of the RVP-4
Standby
This state is reached either from the state Wait Coarse Temperature, or after the end
of a successful analysis cycle (from the Ready state), or after a reset. Exception: a reset
is triggered if the process is in the state Safe State.
At first, the valve positions are not changed. If a reset is held (in remote control mode, a
reset can be held by holding the signal input in its active state), the program holds and
waits for the reset state to end.
If a different sample stream has been requested, it is activated. If no sample stream is
selected (Stream = 0), the state switches to Startup immediately. The inlet and outlet
valves of the measuring cell are switched to the position FlowThrough, and the pneumatic
cylinders are switched to the position PosClear.
The program remains in the state Standby until a sample stream is switched on and there
is no reset signal. The status remains active for at least 5 seconds. Exception: Stream = 0.
Next state: Startup (if Stream = 0) or Wait Fine Temperature (start of an analysis
cycle).
2.3.6
Wait Fine Temperature
The measuring cell valves are actuated with FlowThrough and the pneumatic cylinders
with GoClear. The program waits for at least 10 seconds. If the sample stream was
changed, the program waits for another period of time, as defined in the parameter
StreamSettleTime. The program then checks if the measuring cell temperature and the
sample temperature are within the target range. If the temperature values are within the
target range, the program switches to the state Filling. If the target range is not reached
within the time defined by MaxWaitFineTime (parameter), the alarm TA_TO_WAIT_FINE is
triggered.
To determine the tolerance, the temperature deviations of the flowing sample and of the
measuring cell are monitored for the period of time defined in the parameter
ObserveTime. If the measuring cell temperature deviates by less than T_Fine_Limit, it is
within the target range. For the temperature of the flowing sample, the tolerance
threshold is twice as high.
2.3.7
Flushing
For flushing, the measuring cell valves remain in the position FlowThrough, and the
pneumatic cylinders are actuated with GoClear. The measuring cell is constructed so that,
in this position, a circular gap for the sample flow remains. After 10 seconds, the program
switches to the state Filling.
PACS Software for RVP-4
Version 1.0.0., 11.05.2007
Design and Function of the RVP-4
2.3.8
17
Filling
For filling, the measuring cell valves are actuated with FlowThrough, and the pneumatic
cylinders are actuated for 1 second with GoPreFill. In this way, pressure is exerted on the
rear end of the dosing cylinder. Now the dosing cylinder is actuated with GoFill. Caused by
the pressure on the dosing cylinder, the cushioning in Y_DOSE_FW is active immediately,
and the measuring piston slowly moves to the filling position. The program now waits for
the proximity switches on the pneumatic cylinders to signal the position PosAllot. After
another 5 seconds, the program switches to the state Expand.
2.3.9
Expand
First, the measuring cell valves are actuated with FlowLocked. After 2 seconds, the
pneumatic cylinders are actuated with GoExpand. The measuring piston now moves back
to its expansion position. The program now waits for the proximity switches on the
pneumatic cylinders to signal the position PosExpand. After another 5 seconds, the
program switches to the state Measure.
2.3.10 Measure
To measure the vapour pressure, the measuring cell valves remain acutated with
FlowLocked, and the pneumatic cylinders with GoExpand. The pressure in the measuring
cell is monitored continually, the measured value is rounded to 0.1 kPa and recorded.
Evaluation starts after 2 minutes. If the current pressure deviation, and the pressure
deviation measured 1 and 2 minutes earlier, remains within 0.1 kPa, the average of these
pressure values is recorded as ASVP.
This ASVP is then converted according to the selected conversion algorithm and unit
(parameters Conversion and Unit) and is signaled to the various output channels (analog
output, Modbus, panel, history file, plot). The next state is Ready. If the vapour pressure
is not detected within 15 minutes, the error No Vapor Pressure detect is signaled, and
the next state is Standby.
2.3.11 Ready
The digital output Ready is set; it signals a valid measuring signal. The measuring cell
valves remain actuated with FlowLocked, and the pneumatic cylinders are actuated with
GoFill . As soon as the pneumatic cylinders have reached the position PosAllot, the
measuring cell valves are actuated with FlowThrough and the pneumatic cylinders with
GoUndefined. As soon as the time defined in the parameter ReadyTime has expired, the
digital output Ready is reset, and the program switches to the state Standby.
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Design and Function of the RVP-4
2.3.12 Safe State
The state Safe State is reached by activating the button SafeState in the main window,
or by triggering an alarm that is configured accordingly. The measuring cell valves are
actuated with FlowThrough and the valves for the pneumatic cylinders with GoUndefined .
The digital output TDO_ENABLE_POWER is deactivated so that heating and cooling are
disabled. A selected stream is deactivated. The analysis process remains in the state Safe
State until CMD_Reset is triggered. The next state is StartUp.
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3 First Steps with PACS
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3.1
First Steps with PACS
Starting PACS
To start PACS, proceed as follows:
• Switch on the analyzer, as described in the operating manual.
The computer for data analysis (ACU) boots up and starts the operating system, and the
PACS process software starts automatically. Only as an exception, it may be necessary or
convenient to start PACS manually, e.g. if PACS was closed manually, or if the shortcut to
PACS in the Autostart directory has been removed. To do this, proceed as follows:
• In the Windows Start menu under Programs – Bartec Benke, select the PACS
program symbol.
Note:
PACS always starts on the Operator user level, using the same settings as
were stored at the end of the last session.
If the analysis process was active when the program was ended, it will now be
started again. Otherwise, only the outputs will be initialized with their starting
values.
You can change the user level, for example to adjust program settings on the
Expert level (see chapter 5.5).
After starting PACS, the Watchdog module starts automatically (see chapter 3.2), and also,
if applicable, the Modbus module.
Additionally, if installed, the remote maintenance software starts.
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21
Watchdog Module
After starting PACS, the Watchdog module starts automatically. The Watchdog module
shows whether particular applications which are necessary for correct system operation
are active (e.g. PACS, Modbus, etc.). These applications are registered by the Watchdog
module, and they are then polled in turn. If a registered application does not react to the
polling request, all applications and the operating system are shut down. After a delay
time, the Watchdog triggers a system reset of the PC which restarts the operating system
and the PACS software.
Figure 3.1:
Watchdog Module
The LED WD shows the status of the Watchdog hardware. If the LED is grey, the
hardware is inactive. If it is green, the hardware is active.
The LED CON shows the available connections. If at least one application is registered and
polled by the Watchdog module, the LED is green. If no application is registered, the LED
is grey. The registered applications are shown in the center of the Watchdog window
under "Connections".
The LED TRIG changes color from blue to orange. While the Watchdog module is
checking if the connected applications are active, the progress bar shows the current
status of the polling process. If all connected applications are active, the hardware is
triggered, and the LED is orange. If not all applications are active, the hardware is not
triggered, and the LED remains blue. The Watchdog module then resets the system within
the next few seconds, i.e. it stops all active applications, shuts down the operating system,
resets the hardware and restarts.
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First Steps with PACS
Additionally, the Watchdog window contains information on the software version.
• To close the Watchdog module, click Quit.
Note:
If the Watchdog module is closed while registered applications are still running,
the correct function of the applications can no longer be checked.
If you click Reset, a system reset of the PC will be carried out. This should
only be done in exceptional cases and for test purposes, as any changes in
the system configuration which were not previously stored will be lost.
3.3
Defining User Rights
To avoid unauthorized changes to the system, you must restrict acces by defining user
rights. Changes to the system can only be made on the user level Expert. You can restrict
access by means of a password. For further information, please refer to chapter 5.5.
3.4
Exiting PACS
Before you exit PACS, close all dialog windows. There are several ways of exiting the
program:
• Select Exit form the File menu.
• Press Alt-F4.
• Double-click on the program icon in the top left corner of the main window.
• Click on the "Close" symbol in the top right corner of the main window.
The current settings for the software configuration are stored and will be loaded
automatically at the next system start.
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The following dialog window appears.
To exit PACS, click on Yes. To continue working with PACS, click on No. If you want to
exit PACS and shut down the operating system as well, click on Shutdown.
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First Steps with PACS
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4 PACS Overview
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4.1
PACS Overview
Definitions: Streams, Parameters and Conversion
Parameters are adjustable values which influence the measuring process (e.g.
TW_Ready). Parameters are stored in a file and can be edited and changed by means of
specific program functions.
A sample stream (Stream) is a physical pipeline through which a sample flows into the
analyzer. PACS allows you to take a sample either from one of two available online
streams or from a validation stream.
The vapour pressure is originally measured as ASVP (DIN absolute pressure, ASTM total
pressure). The measured value can be converted and output in accordance with other
measurement methods (Conversion). In this case, the output value is calculated by
means of a linear equation.
Value = Offset + Gain * Pressure
Conversion
Parameter
Conversion
Offset
Gain
ASVP
0
0.0
ASTM_DVPE
1
-3.78
0.965
EPA_DVPE
2
-2.39
0.956
CARB_RVPE
3
-4.93
0.972
ASTM_RVPE
4
6.07
0.752
CustomVP
5
CustomVPOffset
CustomVPGain
1.0
The values of offset and gain are derived from the applicable standards and publications.
CustomVP represents a non-standardized conversion. In this case, the values of offset and
gain are taken from the parameters.
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The PACS Main Window
The PACS main window displays currently and previously measured values. You can
activate and deactivate measurements. The status of the system and any occurring errors
are displayed.
1
2
3
4
Figure 4.1:
PACS Main Window
1 Sample streams
2 Validation
3 Process state and system control
4 Graphical Display of the Measuring Results
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PACS Overview
The menus in the menu bar are explained in detail in chapter 5.
For a better overview, the main window is divided into the sections shown in Figure 4.1:
PACS Main Window. The following description refers to these sections.
4.2.1
Local System Control
The system can be controlled either locally or from a central DCS (Distributed Control
System).
To control the system locally:
• Make sure that Local is activated in section 3. Otherwise, click on Remote.
The button Remote changes to Local. You can now set parameters and control the
system directly with PACS. Remote control by the DCS is deactivated.
4.2.2
Sample Streams
Selecting Sample Streams Manually
In section 1, both sample streams are displayed side by side. At the top of the section
there is a text field where you can enter the name or tag of the stream. The defaults are
"Stream1" and "Stream2". The LED on the right lights up green when the stream is active,
i.e. the measuring cycle with this stream is in progress.
You can analyze both sample streams separately.
To select a sample stream:
Note:
The entries in the cycles fields are irrelevant for manual measurment of the
sample streams. These fields are only required for automatic measurements.
• Click on one of the two buttons Stream 1 or Stream 2 in section 1 with the status
Off.
The status changes to On and the button becomes green. This triggers a request for
a measuring cycle with this stream. If a measuring cycle with another stream is in
progress, this will not be aborted. As soon as the current measuring cycles is
finished, the selected stream is activated and the green LED next to this sample
stream lights up.
The most recent measuring results for both sample streams are displayed. Below, the
times for the respective sample names are displayed.
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Alternate Automatically between Sample Streams
The two sample streams can be measured automatically in an alternating sequence. A
sample stream can be measured several times before switching to the other sample
stream.
In section 1, both sample streams are displayed side by side.
• Enter the names of the sample streams in the two text fields at the top.
• In the field Cycles, enter the required number of measurements for each sample
stream.
• Click the button in the field Automatic Stream Switching.
The status changes from Off to On. Automatic stream switching is now activated. If a
measurement is in progress, this will first be completed. Automatic stream switching
will then start with the first sample stream. The two sample streams are now
measured automatically in an alternating sequence. Each stream is measured as many
times as specified in Cycles, afterwards the system switches to the next stream.
If a sample stream is active, the green LED next to the name of the sample stream
lights up. The Cycle display in the field Automatic Stream Switching shows the
remaining number of measurements for the active sample stream.
The most recent measuring results for both sample streams are displayed. Below, the
times for the respective sample names are displayed.
4.2.3
Validation
Information for system validation is displayed in section 2.
At the top of the section there is a text field where you can enter the name or tag of the
validation stream. The default is "Validation". The LED on the right lights up green when
the validation stream is active. In the field Cycles, enter the required number of
measurements for validation.
To start validation manually:
• Click the buttonValidierung while it is in the state Off.
• The button changes to On. The LED Ins indicates that a number of validation cycles
has been requested.
Note:
If the button On is switched back to Off, the LED Ins will remain active. If a
sample stream measurement is in progress, validation will start after the
current measurement is complete.
As soon as the validation stream starts, the LED at the top lights up green. The number of
measuring cycles specified in Cycles is carried out.
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PACS Overview
The most recent result is displayed. The field below shows the time of the corresponding
sample measurement.
Note:
4.2.4
Validation can also be started remote from the central DCS (Distribution
Control System), or it can be activated by an automatic timer (see
chapter 5.2.4). The validation stream is not included in automatic stream
switching.
Process Status and System Control
In section 3, you can control general system functions, and the process status and errors
are displayed.
In the field Tag, you can enter the name of the analyzer. This helps you to identify the
analyzer.
Error messages
If there are any error messages, they aber displayed in the field Error.
• Read the error messages carefully.
• If required, remove the cause of the error.
To confirm an error message:
• Click Quit.
Information on the Process Status
The following status information is displayed:
•
State shows the current process state.
•
Cycle Time displays the time since the measuring cycle started.
•
The progress bar below Cycle Time shows the progress of the current action,
depending on the corresponding process step (time t, pressure (difference) P,
temperature (difference) T etc.).
•
T-Cell displays the current measuring cell temperature.
•
P-Cell displays the current pressure in the measuring cell.
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Configuring the Measuring Units
To the right of the displays T-Cell and P-Cell, you can select the measuring unit for the
current temperature and the current pressure.
•
The setting for T-Cell (current measuring cell temperature) affects not only the
display in the PACS main window, but also all other cases where the measuring cell
temperature is signaled, e.g. in the history, and all other temperature displays.
•
The setting for P-Cell (current pressure in the measuring cell) only affects this
display. The measuring unit for the measured vapour pressure is set by a parameter.
Note:
You can change parameters in the menu Configure. For more information,
please refer to chapter 5.2.
Local or Central Control
You can control the system directly via PACS or via a central DCS (Distribution Control
System).
To control the system with PACS:
• Make sure that Local is active. Otherwise, click on Remote.
The button Remote changes to Local. You can now control the system directly with
PACS.
To control the system centrally via the remote interface (digital inputs or Modbus signals):
• Make sure that Remote is active. Otherwise, click on Local.
The button Local changes to Remote.
Put System into Safe State
For maintenance, tests or troubleshooting, you can put the system into the Safe State.
You can then control actuators via the IO-Test panel and the Utility panels without
interfering with the process cycle.
The state Safe State is only conditionally safe because it is acquired
through software functions. Please observe the operation instructions.
• Click SafeState.
For more information on the state Safe State, please refer to chapter 2.3.
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PACS Overview
Restart after Serious Error
After a serious error, the system will be put into the Safe State.
Remove the cause of the error. To restart the system after a serious error:
•
Click Reset.
The system is reset, depending on the most recent state. The system is ready for
operation.
Transmit Analog Value as Output Signal to the DCS
In addition to the measuring result (vapour pressure), another analog value can be
transmitted to the DCS (Distribution Control System).
To select an analog value:
• Select a value from the field Selectable Signal.
The current value of the signal is displayed in the field Value. The signal will be
transmitted to the DCS via the analog output SelectedSignal.
4.2.5
Graphical Display of the Measuring Results
In section 4, the sequence of measuring results is displayed in a chart. You can select the
streams you want to display. Additionally, you can select the value range for the X-axis
and the Y-axis.
To select the streams for the display:
• In the main window above the graphical display, click on Plot Data of.. and select a
stream. You can also display all streams at the same time.
To select the value range for the X-axis:
• In the field Horizon, select a time range between 3 h and 192 h.
All measured values are displayed, from the current value back to the earliest value as
specified in Horizon.
Note:
With << or >> you can display the intervals before or after the current
interval. Both functions are only available if there are sufficient measured
values available before or after the current interval.
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To select the value range for the Y-axis:
• In the field Upper to the left of the graphical display, enter the top value for the Yaxis, or use the arrow keys.
• In the field Lower to the left of the graphical display, enter the bottom value for the
Y-axis, or use the arrow keys.
To display the values of individual measuring points:
• Click on a measuring point in the graphical display.
The measuring point is highlighted with crosshairs in blue. Above the graphical
display, the measuring result, the average temperature, the time of the measurement
and the corresponding stream are shown.
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PACS Software for RVP-4
PACS Overview
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The PACS Menu
35
5 The PACS Menu
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The PACS Menu
The menu bar shows all PACS menus from which you can access the sub-menus.
File
IO
Exit
Test
Log
2
1
Configure Report
Utilities
Accesslevel
Help
Parameters 2
Manual
Controller
Operation
Operator
Manual(s)
Expert
About
Controller
Configuration
2
Modbus
Alarms
3
Report
3
Pressure Plot
Manual Process
Operation 3
Controller
Values Plot
Validierung Add Message
to Logbook
2
5.1
1
write access only on Manufacturer and Expert level
2
unlimited write access only on Manufacturer level
limited write access on Expert level
3
write access only on Manufacturer level
3
Manufacturer
Change
Password
¹
The IO Menu
The options in the IO menu allow you to carry out a hardware test. All outputs can be
switched manually, and the input values are displayed. Each input and output can be
configured and calibrated.
Figure 5.1:
PACS – IO Menu
An explosive atmosphere can be a danger to your life!
If you need to open the cabinet for checks or calibration, observe all safety
instructions in the operating manual for the analyzer.
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5.1.1
37
IO - Test
To check the input and output channels, select IO – Test. The window Input/Output
Test opens:
Figure 5.2:
Note:
PACS - Testing Digital and Analog Inputs and Outputs
Depending on the user level, this dialog window offers different functions. For
further information on the user levels, please refer to chapter 5.5.
Do not click on the buttons unless you are well acquainted with the
functions! Operating errors can cause damage!
An explosive atmosphere can be a danger to your life!
If you need to open the cabinet for checks or calibration, observe all safety
instructions in the operating manual for the analyzer.
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The PACS Menu
In this dialog window, all analog and digital inputs and outputs are displayed with their
current value or switch status. When the digital inputs and outputs are switched, the
adjacent LED or switch button becomes green, otherwise it remains grey.
The digital outputs, e.g. those which switch a single valve, can be switched manually for
testing by clicking on the switch button. Similarly, you can change the values for the
analog outputs manually for testing purposes.
Note:
If you change the digital outputs during an analysis cycle, you may affect the
process and the results.
In the field Modulator, you can adjust the settings for a modulator that is implemented in
the system.
Note:
The modulator is not used fully by the Vapor Pressure Analyzer, only limit
monitoring functions are used. Unexplained parts can be ignored.
The LEDs Upper Limit and Lower Limit light up red if the limit value for the sensor
temperature T-HeatExchanger is violated. They switch off again as soon as the
temperature returns to a value within the tolerance range.
The LED NotLockout is switched off if the temperature falls outside the limits, and it
remains off, even if the temperature reaches the normal range again. It can only be reactivated by pressing the push-button LockOut Reset (-SH2) in the control unit housing.
The LED LockOutReset lights up while the push-button is being pressed. Limit
monitoring is implemented by means of hardware on the IO board, it functions without the
aid of PACS. NotLockout is also a digital output which is part of the safety system (see
connection diagram). If NotLockout is not active, the measuring cell heater and the
temperature control unit are disconnected.
The status of the IO board is indicated in the field IO 98 alive: During normal operation,
the LED lights up green. The LED is red if the IO board is faulty. Additionally, the type of
IO board is displayed as either ISA or ETH.
The Temperature Conversion Tool is an additional utility which allows you to convert
temperature values between the units Kelvin (K), Celsius (°C), Fahrenheit (°F) and Ohm.
To close the window Input/Output Test, click Cancel.
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5.1.2
39
IO - Log
You can record analog input signals, e.g. from the temperature sensors.
• Select IO – Log from the main menu.
The following window opens:
Figure 5.3:
PACS – Record Analog Input Signals
The input signals are saved in separate CSV files.
• Enter the file name in the field Log-Files Name. By default this is io_log.
In one file, a maximum of 32000 entries can be recorded. For further entries, new
files are generated. For this, the end of the specified file name is extended by
consecutive numbers.
• Enter the time interval between two recordings in the field Sampling Time.
• Select the input channels you want to record in the field Selectable Input Channels
to be locked.
The selected channels are marked with a check symbol, they will now be recorded.
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The PACS Menu
To start recording the input channels:
• In the field Execution, click Start.
The LED in the field Log Status Information shows the status of the IO board.
During normal operation, the LED lights up green, otherwise it is red.
The field Next Value in displays the time before the next recording.
The field TINI Ticks displays the internal time of the IO board.
Value Number shows the current number of entries in the file. The number of
entries is limited to 32000.
To stop recording the input channels:
• In the field Execution, click Stop.
The recording is stopped.
To view the recorded data:
• In the field Current File, double-click on the displayed file path.
The CSV file is opened as a chart in the Diamond CS Viewer.
5.1.3
IO - Configuration
To configure the digital and analog inputs and outputs and to calibrate and set other
parameters, select IO – Configuration. The following dialog window appears.
Note:
These signals are configured by BARTEC BENKE before delivery of the
analyzer. The settings should only be changed in exceptional cases, and only
after consulting BARTEC BENKE.
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Figure 5.4:
41
PACS - Configuring Digital and Analog Inputs and Outputs
Configuring the Digital Output
By clicking the button labeled Tag, you can select a digital output in the section Digital
Output. A drop-down menu opens with the names of all configured digital outputs. Click
on one of these outputs. The name will then be displayed on the button under Name.
To change the name, click on Rename and enter a new name for the selected tag in the
dialog. The name can be up to 15 characters long. Click on OK.
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The PACS Menu
In the Channel field you can assign a channel on the I/O board to the currently selected
digital output. This is only accessible at Manufacturer level, as changes in this
configuration can result in hardware errors.
The checkbox Invert allows you to invert the state of the channel (negative / positive
logic). The checkbox Init determines which value will be used to initialize the digital
output after starting the program, before the first analysis cycle. If the check box is
selected, the output is switched to active status, if the checkbox is deactivated, the output
is inactive.
Configuring the Digital Input
To configure the digital inputs in the section Digital Input, proceed as described above
for the section Digital Output. There is no initialization value for inputs.
Configuring the Analog Output
In the section Analog Output, select a channel of your I/O board. The name will then be
displayed on the button under Name.
To change the name, click on Rename and enter a symbolic name for the corresponding
property name. The name can be up to 15 characters long. Click on OK.
The field Init shows the start value for initializing the outputs, as described for the section
Digital Output.
The names of the analog and digital inputs and outputs are shown in the window Input /
Output Test.
Configuring the Analog Input
The channels for the analog input values are set in the section Analog Input. To
configure the analog input, select a channel on your I/O board and assign a symbolic
name to it which stands for the corresponding input value. The name can be up to 15
characters long (as described above for the digital outputs).
Calibrate Analog Inputs and Outputs
Note:
These settings are factory-set and must not be changed! If a calibration should
become necessary due to an error, the measuring process must be aborted
first.
The analog inputs and outputs are calibrated based on a 2-point linear equation, i.e. the
relationship between the physical property and the value in the converter is assumed to be
linear. If two values are known, their relationship can be described in a linear equation.
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The measuring results are output as an analog signal (4-20 mA). To do this, the physical
measuring range of each channel must be adjusted by calibration to match the digital
measuring range.
The analog input channels must also be calibrated. An exception is the temperature
measurement with Pt100 sensors which are connected directly to the IO board. To
determine the temperature, first the resistance is measured, then the temperature is
calculated using a known standard formula (according to DIN 43760 / IEC 571).
Two examples of analog input and output calibration:
PT100 input:
• Select an Analog Input, e.g. "T_SampleHE", and set the Conversion to "Pt-100".
An explosive atmosphere can be a danger to your life!
If you need to open the cabinet for checks or calibration, observe all safety
instructions in the operating manual for the analyzer.
• Disconnect the sensor from the input and connect a variable resistance box.
• Determine the calibration points (e.g. -30 °C and + 50 °C), and enter these values in
the fields Convert Value Low and Convert Value High. The required resistance
values can now be read from the fields Physical Value Low and Physical Value
High.
• Set the resistance to the value in Physical Value Low. The value in field Digital
Value Current changes accordingly.
• Select this value with the arrow button to the left of field Digital Value Low.
• Set the resistance to the value in Physical Value High. The value in field Digital
Value Current changes accordingly.
• Select this value with the arrow button to the right of field Digital Value High. The
calibration is now complete. To save the changes, click Save, to exit without saving
the changes, click Cancel.
• Reconnect the sensor to the input.
Note:
If you have the relevant resistance values available, during calibration you can
specify the "Physical Values" and read off the resulting "Converted Values", i.e.
the temperature, from the display fields.
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The PACS Menu
4 – 20 mA output:
• Select an Analog Output, e.g. „TAO_VAPOR_PRESSURE“.
An explosive atmosphere can be a danger to your life!
If you need to open the cabinet for checks or calibration, observe all safety
instructions in the operating manual for the analyzer.
• Connect an amperemeter to the output.
• Determine the measuring range with 4.0 und 20.0 (mA), and enter the values in the
fields Physical Value Low and Physical Value High respectively.
• Copy the value in Physical Value Low into field Physical Value Current, using the
arrow button on the left. The output current should now be about 4 mA.
• Set the output current to 4 mA by changing the value in Digital Value Current, and
transfer this value into the field Digital Value Low with the arrow button on the left.
• Copy the value in Physical Value High into field Physical Value Current, using
the arrow button on the right. The output current should now be about 20 mA.
• Set the output current to 20 mA by changing the value in field Digital Value
Current and transfer this value into the field Digital Value High using the arrow
button on the right. The calibration is now complete. To save the changes, click Save,
to exit without saving the changes, click Cancel.
Note:
The physical measuring range of an analog output can be changed at any time.
The calibration to the measuring range of 4-20 mA is retained.
Scan Parameters
The field Scan Parameters shows the scanrate (Scan-Interval), the field
IO98-Al-Filter displays the smoothing factor for the analog inputs. The field dAI/dtGain shows a factor for derivation.
Note:
These settings are factory-set and must not be changed!
PACS Software for RVP-4
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The PACS Menu
45
Loading and Saving the Configuration
The menu File in the menu bar allows you
•
to load an IO configuration (Load),
•
to save an IO configuration under a different name (SaveAs),
•
to load initial values for the IO configuration (LoadInitial).
Select File – Load to load a configuration. A dialog appears from which you can select the
required file. The standard path is C:\Program Files\BBS\RVP4\config. Click Load
to load the selected configuration file.
To save a configuration you have changed under a different name, so that it can be
reactivated later, select File – Save As. A dialog appears from which you can select the
file name and path for saving the configuration file. The standard path is
C:\Program Files\BBS\RVP4\config.
With File – LoadInitial, you can load the configuration file "InitialIO.ini". This is only
necessary if the IO board is changed. In this case, further calibration steps are required.
Note:
It is recommended to save a backup copy of the config directory. The
directory contains all PACS program settings, such as parameters, products,
alarms, and IO settings. For further information, please refer to chapter 5.2.
As soon as you have made a change, the Save button becomes active. To save the
changed settings, click Save, and then click Cancel to close the window. To close the
window without saving the changes, click Cancel.
Note:
When the program starts, settings are always retrieved from the file conf.io.
The menu described above serves to save various configuration settings.
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5.1.4
The PACS Menu
IO Modbus (optional)
As an addition or a substitute for the physical interface (analog inputs, analog outputs,
digital outputs, digital inputs) to a DCS (Distribution Control System), a Modbus interface
module can be installed. This module is described in a separate manual (Modbus Interface
Description).
Figure 5.5:
PACS - Modbus Application
To put this module into operation, the necessary hardware and software must be installed
and configured, and the parameter "ModbusActive" must be set to 1 (0 = inactive). The
Modbus interface is then started automatically by PACS.
Then select IO – Modbus from the menu to open the following window:
Figure 5.6:
PACS Software for RVP-4
PACS - Modbus Data
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The PACS Menu
47
The LED Active indicates the status of the connection to the DCS.
Via the analog input Reserved (optional), an analog signal can be read from the DCS.
The remaining LEDs indicate the states of the digital inputs (Modbus) as monitored by the
system. The inputs Reset, StreamRQ1, StreamRQ2 and ValidationRQ correspond to
the digital inputs with the same name (physical, discrete connections). See also chapter 6.
Via the Modbus interface, more signals are transmitted than is shown in the dialog
window. For further details, please refer to the separate manual (Modbus Interface
Description).
5.2
The Configure Menu
The options in the Configure menu allow you to set parameters and to edit the settings
for controls, alarms, and validation.
Figure 5.7:
PACS - Configure Menu
For the process run, PACS requires a number of parameters and settings. These
parameters and settings can be defined in the Configure menu.
Configuration files:
Parameters and validation:
• File: .\config\conf.par
Alarms:
• File: .\config\conf.al
Controller:
• File: .\config\CoConf.csv
IO (access via IO – Configure):
• File: .\config\conf.io
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The PACS Menu
In the file ".\config\ProgTermination.ini", the start and exit times of PACS are saved. This
can be used to determine whether PACS was exited correctly.
In the file ".\config\ProgPara.ini", some elements of the main window are saved, so that
on restart, PACS can be initialized with the saved settings and results (stream selection,
selected analog output, tag, the scale of the graphical display, the display of the most
recent measuring results, settings for Cycles).
Note:
It is recommended to save a backup copy of the config directory. The
directory contains all PACS program settings, such as parameters, alarms, and
IO settings. The standard path is C:\Program Files\BBS\RVP4\config.
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The PACS Menu
5.2.1
49
Configure - Parameters
To edit the parameters, select Configure – Parameters. The following dialog window
appears:
Figure 5.8:
PACS - Configuration of General Parameters
The window header shows the path and name of the file which contains the PACS
parameters.
In this window, you can edit general parameters, such as the maximum and minimum
temperature values for all temperature measuring points (TemperaturMax,
TemperaturMin).
For an overview of the parameters and their meanings, please refer to chapter 9.
To edit the value of a general parameter, click on Parameter Name in the section
General. A drop-down menu opens with the parameters you can select by clicking. A
Value is assigned to each parameter. You can change the parameter value by using the
arrow buttons next to it, or by typing the new value directly into the field.
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The PACS Menu
In the lower section of the window, the meaning of the corresponding parameter is
explained.
Note:
All parameters are preset by the manufacturer before delivery. The parameters
should only be changed after consulting BARTEC BENKE, and only if it is
necessary for adjustment to the product.
In the File menu, you can load a configuration (Load) or save a configuration under a
different name (Save As).
Select File – Load to load a previously stored set of parameters.
A dialog appears from which you can select the required file. The standard path is
C:\Program Files\BBS\RVP4\config. Click Load to load the selected configuration
file.
To save a configuration you have changed under a different name, so that it can be
reactivated later, select File – Save As.
As soon as you have made a change, the Save button becomes active. To save the
changed settings, click Save, and then click Cancel to close the window. To close the
window without saving the changes, click Cancel.
Note:
Changes in most of these parameters will not become active immediately, but
only at the start of the next analysis cycle. For further information, please refer
to chapter 9.
Note:
It is recommended to save a backup copy of the config directory. The
directory contains all PACS program settings, such as parameters, products,
alarms, and IO settings. For further information, please refer to chapter 5.2.
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The PACS Menu
5.2.2
51
Configure - Controller
Figure 5.9:
PACS – Configuring the Controller.
In this window, you can edit the configuration of the two controllers for the temperature
of the flowing sample and for the measuring cell. The settings are pre-set by BARTEC
BENKE and should only be changed after consulting BARTEC BENKE. Changes can only be
made on the Manufacturer level.
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5.2.3
The PACS Menu
Configure - Alarms
Select Configure – Alarms.. to configure alarms and warnings.
Figure 5.10:
PACS - Alarm Table
If an error occurs, the corresponding error message is displayed under Message in the
PACS main window. The reaction to these errors is configured by BARTEC BENKE and
should only be changed if absolutely necessary.
A warning indicates non-critical irregularities in the process flow, but the cause of a
warning should still be investigated. An alarm indicates a serious error and should trigger a
"Break" (process abort) or a "Shutdown".
"Break" means that the running process is aborted and the program switches to the state
Standby; the process then starts again from the beginning. If an alarm is configured as
"ShutDown", the program switches to the state Safe State. The process then remains in
this state until the button Reset is activated, or the digital input "Reset" is activated, or
the button Reset in the main window is pressed.
"mA 0" means that the signal outputs are set to their initial values.
"1" activates the respective reaction, "0" deactivates it.
Note:
For further information on error messages and alarms, please refer to
chapter 8.
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The PACS Menu
5.2.4
53
Configure - Validation
Select Configure – Validation to open the window, and to view and edit the settings.
To insert one or several validation cycles into the flow of the measuring process, select
one or several days of the week under Day(s), and the time under Hour.
With ValidierungoutDelay, the delay (in seconds) is specified after which the valve
Y_ValidierungOut is actuated, relative to the valve Y_Validierung.
Figure 5.11:
PACS – Configure Validierung
For further information on validation, please refer to chapter 4.2.3.
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5.3
The PACS Menu
The Report Menu
The menu Report allows you to view various recorded data either in a table or a chart,
and to add new entries to the logbook. Additionally, you can add a message to the
logbook.
Figure 5.12:
5.3.1
PACS - Report Menu
Report - Report
Select the menu option Report to open a file selection window. The directory
C:\Program Files\BBS\RVP4\DATA is preselected, which contains the report files.
You can select only files with the extension .csv.
Figure 5.13:
PACS - File Selection Window
The selected report file is displayed in the program CSView. Available report files:
•
LogBook.csv - chronological logbook which records various events
•
History.csv – measuring results
•
Alarms.csv – triggered alarms
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The PACS Menu
•
55
Debug.csv – records a large number of signals at short intervals, for
troubleshooting The report file is only saved if requested (see menu Utilities).
Instead of "Debug", a different name may be chosen.
Examples for report files:
Figure 5.14:
Report LogBook
Entries are marked with an ID as follows.
A (Action):
Action during the process flow, e.g. program start ("StartProgram")
E (Error):
Error messages
N (Note):
Operator's comments
W (Warning):
Warning messages
R (Result):
Result of the measurement
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The PACS Menu
Figure 5.15:
Report History
Figure 5.16:
Report Alarms
Figure 5.17:
Report Debug
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The PACS Menu
5.3.2
57
Report - Pressure Plot
To display the pressure and the temperature deviation from the target temperature of the
measuring cell in a chart, proceed as follows:
• In the menu Report, select Pressure Plot.
The window Pressure and Temperature Plot opens. This window displays the
pressure and temperature values in the state Measure, up to the time when the
vapour pressure is detected.
Figure 5.18:
PACS – Pressure and Temperature Plot
In the upper section of the window, the deviation from the target temperature of the
measuring cell is displayed as a chart.
In the lower section of the window, the pressure in the measuring cell is displayed.
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The PACS Menu
The fields Lowest Value and Highest Value and the corresponding bar diagrams
show the minimum and maximum pressure values at the times t (current time), t - 1
minute and t - 2 minutes. The display starts 2 minutes after the program has switched
to the state Measure.
To scale the Y-axis of the pressure chart manually:
• In the field Scaling, click Manual.
The upper and lower limits of the value range on the Y-axis are displayed in separate
number fields.
• Click in the number field you want to edit. Enter the required values. Confirm with
Return.
The new value range for the Y-axis is displayed in the chart.
To scale the Y-axis of the pressure chart automatically:
• Click Auto.
The new value range for the Y-axis is displayed in the chart.
Note:
If the pressure or temperature values fall outside the permitted limits, the
graphical display is archived automatically.
The following limit values are monitored: TA_PRESS_TIMEOUT, TA_RANGE,
TA_PRESS_TREND, TA_INACCURATE_TEMP.
To view archived measuring results with measured values outside the permitted limits,
proceed as follows:
• Doubleclick in the pressure chart.
The window Pressure Plot opens.
• Select a file and load it.
The pressure and temperature values are displayed in the window Pressure and
Temperature Plot. The field File No shows the number at the end of the file name.
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The PACS Menu
5.3.3
59
Report - Controller Values Plot
Figure 5.19:
PACS – Controller Values
To display the temperature values for the measuring cell and the flowing sample in a
chart, together with the corresponding set values of the temperature controllers, proceed
as follows:
• In the menu Report, select Controller Values Plot.
A window opens which shows the following charts:
- Temperature deviation of the measuring cell from the target temperature (Cell) and
temperature deviation of the flowing sample from the target temperature (Sample).
- MV Cell (MV - manipulated value) for the measuring cell heater.
- MV Sample (MV – manipulated value) for the heater module.
The sample stream can be cooled or heated. Consequently, negative or positive
values are equally possible.
The time axes are scaled in minutes, the Y-axes of the set values are scaled in %.
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The PACS Menu
You can scale the Y-axes manually or automatically.
To scale the Y-axes manually:
• In the field Scaling Mode, click Manual.
The upper and lower limits of the value range on the Y-axes are displayed in separate
number fields.
• Click in the number field you want to edit. Enter the required values. Confirm with
Return.
The new value range is applied to the chart.
To scale the Y-axes automatically:
• Click Auto.
The new value range for the Y-axis is displayed in the chart.
5.3.4
Report - Add Message to LogBook
To add an entry to the report file LogBook.csv, select Report – Add Message to
Logbook. A window appears where you can enter the required information. Then click
Enter. The entry will be added to the report file LogBook.csv, together with the current
date and time, and marked with the ID N (Note).
Figure 5.20:
PACS Software for RVP-4
PACS – AddMessage
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The PACS Menu
5.4
5.4.1
61
The Utilities Menu
Utilities - Manual Controller Operation
This window can be used for manipulating the controllers for testing purposes.
Note:
Use this utility only if you are well acquainted with the functions.
Operating errors can cause damage!
The manipulations can interfere with normal operation.
Figure 5.21:
PACS – Controller Operation
With On/Off, the controllers can be switched on or off. With Man/Auto you can change
the mode between Automatic and Manual. The actual value is displayed in PV (process
value), standardized in %. The set value MV (manipulated value) remains the same. With
Manual Set, the value MV can then be changed (relatively).
Next to Manual Set on the right, various statistical values of the controller deviation are
displayed over an observation period (as set in Config Controller Observe Time).
MAX: The maximum value of deviation within the observation period.
MIN: The minimum value of deviation within the observation period.
DC and AC: The direct and the alternating parts of the deviation within the observation
period.
Slope: The slope is calculated by means of a regression algorithm of the deviation within
the observation period.
MeanSQ: The mean standard deviation of the regression of the slope.
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5.4.2
The PACS Menu
Utilities - Manual Process Operation
This window allows you to manipulate the process for testing purposes, and for recording
data.
Note:
Use this utility only if you are well acquainted with the functions.
Operating errors can cause damage!
The manipulations can interfere with normal operation.
Figure 5.22:
PACS – Process Operation
With Debug, you can record the most important signals and process data at short
intervals and save them in a report file (e.g. Debug.csv). After clicking Debug, a file
selection window appears where you must select or enter the file name. While the data is
recorded, you can add a comment in the field Comment.
Note:
The record should not continue for too long, because it requires a lot of hard
disk space.
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The PACS Menu
63
To switch from the current process state directly to the next state:
• Click NextState.
State Time shows the duration of the current process state.
You can stop normal operation, in order to avoid interference with manual operation:
• Set the button Hold in standby to on.
When the process reaches the state Standby, it will remain in that state. You can
now control the system manually with Piston Command and Valves.
To change back to normal operation:
•
Set the button Hold in standby to off.
• The process proceeds from the state Standby.
For testing purposes it can be necessary to skip the measuring piston position "clear" in
normal operation. To do this, activate Skip Pos. Clear.
To control the measuring piston in manual operation (see also chapter 2.2.5):
• Select a position in the field Piston Command.
• The measuring piston attempts to move to the selected position.
The position of the measuring piston is displayed under Piston Position:
- Error: if two positioning sensors of the same cylinder are active simultaneously.
- Undefined: The measuring piston is not in one of its end positions, it is probably in
motion.
- Clear, Fill and Expand: The respective target position has been reached.
To control the two measuring cell valves (see also chapter 2.2.3):
• Move the slide under Valves to one of the following positions:
- Through: The inlet and outlet valves of the measuring cell are opened.
- Locked: The inlet and outlet valves of the measuring cell are closed.
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5.5
The PACS Menu
The Accesslevel Menu
In PACS, there are three user levels: Operator, Expert, and Manufacturer.
Operator
The Operator level is the level for operators on-site. This level provides
monitoring functions and allows you to switch sample streams. This is
the usual level for routine operation.
Expert
At Expert level, you have access to all software functions, except:
-
Manufacturer
controller settings in the menu Configuration – Parameters
settings in the fields Scan Parameters and Channel in the menu IO –
Configure
manual operation of the digital and analog outputs during the
measuring process in the menu IO – Test
settings in the dialog window Configuration – Alarms
At Manufacturer level, you have unlimited access to all functions of the
software. The Manufacturer level allows you to configure the hardware.
These settings are generally configured by BARTEC BENKE. They are
system-specific and should not be changed without consulting BARTEC
BENKE.
To change to a highter user level, e.g. from Operator to Expert level, proceed as follows:
• In the main window, select the menu AccessLevel.
A drop-down menu opens from which you can select the desired user level.
• For example, select the user level Expert.
A dialog window appears in which you are required to enter the password for the user
level.
On delivery, the password benke is pre-set for the Expert level. In order to
prevent unauthorized access to the system, you should change this
password as soon as possible. The following section describes how you can
change the Expert password.
• To change to Expert level, enter the password in the dialog window, and click on OK.
Note:
No password is needed to change to a lower user level, e.g. from Manufacturer
or Expert level to Operator level.
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The PACS Menu
5.5.1
65
Changing the Expert Password
On delivery, the password benke is pre-set for the Expert level. You should change this
password as soon as possible.
To change the Expert password, proceed as follows:
• Log in to Expert level.
• In the menu, select AccessLevel : Change Password
A dialog window opens.
• Enter a new password with at least 5 characters, and enter it again in the second line
to confirm it.
Note:
For the passwort, only characters from the internation ASCII code can be used,
no blanks or special characters are allowed. A password must have at least 5
characters. Please note that the program distinguishes between upper case
and lower case letters.
• To save the new password, click on OK.
To keep the old password, click on Cancel.
The new password is active immediately. The next time you log in as Expert, you will
have to enter the new password.
For safety reasons, treat passwords as confidential and change them
regularly in order to prevent unauthorized access to the system!
Note:
The password for the Manufacturer level cannot be changed. If you need it for
maintenance purposes, please contact BARTEC BENKE.
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5.6
The PACS Menu
The Help Menu
The Help menu offers help for working with PACS and the analyzer.
Figure 5.23:
PACS - Help Menu
Select Help – Manual(s) to access the system documentation as a PDF file. A dialog
window opens in which you can select the required document.
Figure 5.24:
PACS Software for RVP-4
PACS – Selecting a Manual
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The PACS Menu
67
Under Help – About, you will find the serial number of the analyzer, the software
version, and information on BARTEC BENKE. Please keep the software version number
ready if you contact us.
Figure 5.25:
PACS – Help About
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PACS Software for RVP-4
The PACS Menu
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Process Control System Interface
69
6 Process Control System Interface
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Process Control System Interface
As a standard, the interface to the process control system is equipped with a number of
discrete signals: digital outputs and inputs, and analog outputs and inputs.
Alternatively, these signals and further information can be transmitted via a Modbus
Interface (optional). For further details, please refer to the manual "Modbus Interface
Description RVP-4".
6.1
6.2
Analog inputs
Analog input
Meaning
Option
Reserved
reads from the DCS
yes
Analog output
Analog
output
Meaning
Option
VaporPressure
Output of the measured value
no
SelectedSignal
One of the following signals:
no
PACS Software for RVP-4
Off
No signal selected
T_Cell
Measuring cell temperature
T_Inlet
Sample temperature at analyzer inlet
T_CoolantHE
Temperature of the cooling medium heat
exchanger
T_SampleHE
Temperature of the sample heat exchanger
MV-Sample
Set value of the controller for the flowing
sample (T-Sample)
MV-Cell
Set signal of the controller for the measuring
cell (T-Cell)
P-Sample
Pressure in the measuring cell
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6.3
71
Digital inputs
Digital input
Meaning
Option
Reset/Standby
Abortion of analysis cycle (flank 0/1),
acknowledging alarm and holding in Standby
(static 0), if required
no
ValidationRQ
request for validation cycle
no
StreamRQ1
request for stream 1
yes
StreamRQ2
request for stream 2
yes
Stream- StreamRQ1
RQ2
Validation-
Reset /
RQ
Standby
Function
0
0
0
0
After finishing the current
measuring cycle, the analyzer
switches to the state "Start up" and
waits for a new stream selection.
1
0
0
0
Request stream 1
0
1
0
0
Request stream 2
1
1
0
0
Request automatic stream
switching
x
x
1
0
A flank (0/1) causes insertion of
validation cycles (number: Cycles).
If the signal is kept active, further
validation cycles are carried out
(exceeding the number Cycles).
x
x
x
1
Reset
Legend:
0 - low
1 - high
X - the state is irrelevant
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6.4
Process Control System Interface
Digital outputs
Digital output
Meaning
Option
Alarm (NC)
A (serious) error has occurred.
no
Warning
A (minor) error has occurred.
yes
Ready
A measuring cycle has been finished, and the measured
values at the analog outputs are valid.
no
ValidationID
identification of a validation cycle
no
StreamID1
identification of stream 1
yes
StreamID2
identification of stream 2
yes
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Options
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7 Options
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Options
The following options are currently available:
7.1
Modbus Interface
The Modbus interface is used for remote control and for requesting measuring results by a
central DCS (Distribution Control System). It consists of a software module and hardware
(e.g. RS485 interface board) required to provide a transmission channel.
7.2
Remote maintenance interface
It consists of remote control software (e.g. PC-Anywhere) and hardware required to
provide a transmission channel (e.g. modem). It is used for remote control and remote
maintenance of the analyzer from a service office.
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Troubleshooting
75
8 Troubleshooting
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8.1
Troubleshooting
Error Monitoring in PACS
PACS constantly monitors key system functions and issues error messages when a fault
occurs.
There are two basic error types:
•
•
Program errors, e.g. file not available, not enough memory, etc. These errors can be
further classified as follows:
•
Errors during program start-up
•
Error during operation
Errors in the analysis cycle. These can be further classified as follows:
•
Errors which are independent from the analysis cycle, e.g. measured value of a
sensor too high, temperature of a Pt-100 too high, or conductor damage. These
errors are monitored constantly at short intervals.
•
Errors which occur during the analysis cycle, e.g. "TimeOut Measure".
Program errors are displayed in pop-up dialog windows.
Errors of the analysis process are displayed in the field Error in the main window and
recorded in the LogBook (Report – Alarms). They can be configured at Manufacturer
user level in the menu Configuration – Alarms.
8.2
Software error
Note:
If PACS stops due to an error, the Watchdog (see chapter 3.2) will be
activated, i.e. a system reset will be carried out and the computer will be
restarted. In this case, the Log Book contains the comment
"Start_after_abnormal_Termination".
The following list of error messages gives you information on the cause of the problem
and the necessary steps to be taken.
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77
Error Message
Cause / Result
Troubleshooting
Error during program start
Program is already running ! The program can only run
No duplicate allowed.
once. Another program
window may be already
running in the background
or in the task bar
(minimized).
Can´t load Panel XXX
PANEL!
There is a memory problem
or a program error.
Unable to load XXX MENU
BAR!
Message for all dialog
windows and menus (XXX
stands for the respective
dialog window or menu).
Unable to display XXX
Panel!
There is a memory problem
or a program error.
Unable to display Panel for
XXX!
Message for all dialog
windows (XXX stands for
the respective dialog
window).
Confirm the message.
Restart the program or the
entire system. Check for
possible memory errors.
Restart the program or the
entire system. Check for
possible memory errors.
Unable to access IO-board ! The IO board is not
Continue without
available, i.e. the IO board,
connection?
the Ethernet adaptor board
or the connection cable are
missing or defective.
Check the supply voltage for
the IO board, the
connectors, the cable and
the correct location of the
Ethernet adaptor board.
Unable to load "conf.xx"!
Check that the corresponding
file exists in the "Config"
subdirectory and is not being
used by another program
(e.g. Notepad). If necessary,
replace missing files with
backup files.
Unable to copy "conf.xx"
from .\conf.bak\!
Unable to load copy
of"conf.xx" from
.\conf.bak\!
The required configuration
file or its copy is not
accessible, cannot be
copied or loaded, or there is
a memory problem or a
program error.
conf.xx stands for
•
•
•
conf.io
conf.par
conf.al
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8.3
Troubleshooting
Error messages from the analysis process
The following list of error messages gives you information on the cause of the problem
and the necessary steps to be taken.
The abbreviations in the remarks column "R." have the following meanings:
u – independent of the analysis process
a – depending on the analysis process
Tag / Message
R. Explanation
TA_DELTA_TEMPERATUR a
E
Difference between
sample temperature at
heat exchanger and at
cell is higher than
parameter
"T_Delta_Max".
TA_INACCURATE_TEMP
Cannot reach piston
position.
Observe the technical data.
Peltier elements
controller is faulty.
Control disturbance
Observe the technical data.
caused by large
temperature change of
the sample or the cooling
medium.
u
There is an error in the IO board or Tini board is
connection to the IO
faulty.
board.
Check the electrical circuits for
the IO board.
u
There is a leakage in
the analyzer housing.
Put the system out of
operation. Remove the cause of
the leakage. Observe the safety
instructions in the operating
manual.
a
The measuring piston
position was not
reached within the
time "TW_Piston".
Instrument air pressure
is too low.
Observe the technical data.
Check the signals from the
Measuring piston is
proximity switches and the
blocked, proximity switch moving velocity of the
is faulty or wrongly
pneumatic cylinders.
adjusted.
Choke restrictor valve is
out of adjustment.
PACS Software for RVP-4
Check that the peltier elements
are operating correctly.
The temperature
deviation of the
measuring cell has
exceeded the value
"T_Cell_Limit" in the
process step
Measure. The
measuring result has
been discarded.
Leakage in analyzer
housing!
TA_PISTON_POSITION
There is not enough
sample flowing.
a
Lost Connection to IO98Card
TA_LEAKAGE
Solution
Control disturbance.
Inaccurate Cell
Temperature. Analysis
discarded.
TA_IO_CONNECTION
The temperature
difference between
T_Sample and
T_SampleHE is greater
than "T_Delta_Max".
Possible cause
Version 1.0.0., 11.05.2007
Troubleshooting
79
Tag / Message
R. Explanation
Possible cause
Solution
TA_PL_VAPOR
u
The pressure
transmitter power is
lower than 4 mA.
Line to pressure
transmitter interrupted.
Check the electrical circuits for
the pressure transmitter.
The pressure in the
measuring cell is
higher than
"P_Initial_Max" at the
start of process step
Measure.
Leak in measuring cell.
Sample pressure is
lower than
"P_Sample_Min"
during the process
steps with open
measuring cell valves.
No sample flow.
a
Pressure inside the
measuring cell has not
become stable within
15 minute interval in
process step
Measure.
Leak in measuring cell.
Check the measuring piston
seals.
a
Pressure in the
measuring cell has
decreased by more
than
"P_Decrease_Max" in
process step
Measure.
Leak in measuring cell.
Check the measuring piston
seals.
a
Pressure in the
measuring cell rises
above "P_Range_Max"
in process step
Measure.
Pressure in the
measuring cell exceeds
the measuring range.
Observe the technical data.
u
The safety chain of the No sample flow,
temperature control
temperature control
system has been
system is faulty.
triggered.
Check the temperature fuses
on the sample heat exchanger
and on the coolant heat
exchanger.
u
A software error has
occurred.
Contact BARTEC BENKE. Try
acknowledging the error or
restart the program.
Lower limit at pressure
detector !
TA_PRESSURE_INITIAL
a
The intial pressure in cell at
begin of measurement is too
high !
TA_PRESSURE_LOW
a
Sample pressure lower than
parameter "P_Sample_Min".
TA_PRESSURE_TIMEOUT
Pressure in cell did not
stabilize within 900 seconds
!
TA_PRESSURE_TREND
Pressure in cell is regressing
during measurement !
Check seals and pressure
det ector !
TA_RANGE
Pressure during Measure
exceeded “P_Range_Max".
Analysis discarded.
TA_SAFTY_CHAIN
Safety-Chain triggered
(temperature fuses, lockout)
!
TA_SOFTWARE
Internal software error!
Pressure transmitter is
faulty.
Measuring piston
expands too slowly.
Set the parameter
"P_Initial_Max" to a suitable
value. Check the measuring
piston seals.
"P_Initial_Max" depends
on the sample.
Process pressure too
low.
Check the position of the
pressure relief valve. Observe
the technical data.
Check valve is faulty.
Pressure relief valve
actuated.
Version 1.0.0., 11.05.2007
PACS Software for RVP-4
80
Troubleshooting
Tag / Message
R. Explanation
TA_TH_BOARD
High temperature at IOboard!
u
The temperature on
the IO board is too
high.
TA_TH_INLET
u
Temperature at sensor
inlet is higher than
parameter
TemperaturMax.
Conductor broken.
Check the electrical circuits for
the sensor.
u
Temperature at sensor Conductor broken.
MeasuringCell is higher
than parameter
TemperaturMax.
Check the electrical circuits for
the sensor.
u
Temperature at sensor
CoolantHE is higher
than parameter
TemperaturMax.
Conductor broken.
Check the electrical circuits for
the sensor.
u
Temperature at sensor
SampleFlow is higher
than parameter
TemperaturMax.
Conductor broken,
temperature control
system faulty.
Check the electrical circuits for
the sensor.
u
Temperature at sensor
SampleHe is higher
than parameter
TemperaturMax.
Conductor broken.
Check the electrical circuits for
the sensor.
u
Temperature at sensor
Inlet is lower than
parameter
TemperaturMin.
Short circuit in sensor.
Check the electrical circuits for
the sensor.
u
Temperature at sensor
MeasuringCell is lower
than parameter
TemperaturMin.
Short circuit in sensor.
Check the electrical circuits for
the sensor.
u
Temperature at sensor
CoolantHE is lower
than parameter
TemperaturMin.
Short circuit in sensor.
Check the electrical circuits for
the sensor.
u
Temperature at sensor
SampleFlow is lower
than parameter
TemperaturMin.
Short circuit in sensor,
temperature control
system faulty.
Check the electrical circuits for
the sensor.
Upper limit at temperature
probe at sample inlet !
TA_TH_MEASURING_CELL
Upper limit at temperature
probe at cell!
TA_TH_COOLANT_HE
Upper limit at temperature
probe at coolant heat
exchanger !
TA_TH_SAMPLE_FLOW
Upper limit at sample
temperature probe in front
of cell!
TA_TH_SAMPLE_HE
Upper limit at temperature
probe at sample heat
exchanger !
TA_TL_INLET
Lower limit at temperature
probe at sample inlet !
TA_TL_MEASURING_CELL
Lower limit at temperature
probe at cell !
TA_TL_COOLANT_HE
Lower limit at
temperature probe at
coolant heat exchanger!
TA_TL_SAMPLE_FLOW
Lower limit at sample
temperature probe in front
of cell !
PACS Software for RVP-4
Possible cause
Solution
Make sure the environmental
conditions are as specified
(activate air-conditioning
system if required).
Version 1.0.0., 11.05.2007
Troubleshooting
81
Tag / Message
R. Explanation
TA_TL_SAMPLE_HE
u
Temperature at sensor Short circuit in sensor.
SampleHe is lower
than parameter
TemperaturMin.
u
The lock circuit to the
sensor T_CoolantHE
has been triggered
because temperature
was too high or too
low.
Short circuit in sensor,
conductor broken, flow
rate too low (sample or
cooling medium).
Press the button LockoutReset.
Button SH-2 in PAGS housing.
a
Timeout in process
step Wait Coarse
Temperature.
Measuring cell heater or
temperature control
system is faulty. Sample
flow rate too high.
Check the peltier elements and
the measuring cell heater and
their controllers. Observe the
technical data.
a
The temperature
values (T_Sample and
T_Cell) have not
become stable in the
time defined in the
parameter
MaxWaitFineTime.
Temperature changes at
cooling medium inlet or
sample inlet are too
high.
Observe the technical data.
Lower limit at temperature
probe at sample heat
exchanger !
TA_TLO_COOLANT_HE
Temperature probe at
sample heat exchanger
triggered "LockOut", press
push button "LockOutReset" !
TA_TO_WAIT_COARSE
Timeout in process state
"WaitCoarseTemperature" !
TA_TO_WAIT_FINE
Timeout in process state
Wait Fine
Temperature !
Possible cause
Version 1.0.0., 11.05.2007
Solution
Check the electrical circuits for
the sensor.
PACS Software for RVP-4
82
PACS Software for RVP-4
Troubleshooting
Version 1.0.0., 11.05.2007
Program Parameters
83
9 Program Parameters
Version 1.0.0., 11.05.2007
PACS Software for RVP-4
84
9.1
Program Parameters
Notes
The following tables provide an overview of the parameters.
Note:
Generally, changes in these parameters will not become active immediately,
but only at the start of the next analysis cycle.
A small number of parameters will only become active after a program restart.
These parameters are marked with "#N" (New start) in the table.
For every parameter, the recommended value or range is indicated. The recommended
value is an approximate recommendation, all values must be adjusted to the
circumstances (measuring range, stream switching, etc.). The following abbreviations are
used in the table:
B
binary value 1 or 0 (Yes/No, active/not active, true/false)
N
integer without unit
T
temperature in the unit °C or °F, as configured in the main window
K
Temperature difference in K
F
Floating point value
%
percent
U
factor in reference to 1 (1 corresponds to 100%)
P
Pressure in mbar
V
volume in ml
F
volume flow in ml/min
s
seconds
h
hours
K/s
Temperature change per second in Kelvin/s
-
no recommendation
PACS Software for RVP-4
Version 1.0.0., 11.05.2007
Program Parameters
9.2
85
General Parameters
Parameter
Value/Range
Meaning
CustomVPGain
1.0 F
Setting for Conversion = CustomVP: slope
for conversion of ASVP to CustomVP.
CustomVPOffset
0.0 F
Setting for Conversion = CustomVP: offset
for conversion of ASVP to CustomVP.
HistoryLength
7N
Data from the previous days are archived.
The parameter specifies the length of the
recording period in days.
ModbusActive
0B
"0" - Modbus function is switched off.
"1" - Modbus function is switched on Caution, only switch on if the Modbus
software is installed!
P_Conversion
0…5 N
Conversion of the measured pressure to
Vapor Pressure
0
1
2
3
4
5
ASVP - no conversion
ASTM_DVPE
EPA_DVPE
CARB_RVPE
ASTM_RVPE
CustomVP
P_Decrease_Max
4P
Maximum decrease in pressure during
measurement. If the value falls below this
limit, the alarm TA_PRESSURE_TREND is
triggered.
P_Initial_Max
900 P
Maximum permitted pressure at start of
measurement. If this value is exceeded, the
alarm TA_PRESSURE_INITIAL is triggered.
P_Range_Max
1600 P
Maximum pressure during measurement. If
this value is exceeded, the measurement is
aborted and the alarm TA_RANGE is
triggered.
P_Sample_Min
1600 P
Minimum pressure when the sample flows
through the measuring cell. If the value
falls below this limit, the alarm
TA_PRESSURE_LOW is triggered.
Version 1.0.0., 11.05.2007
PACS Software for RVP-4
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Program Parameters
Parameter
Value/Range
Meaning
P_Unit
0…4 N
Conversion of the measuring results to
other pressure units
0
1
2
3
4
mbar
kPa
psi
bar
mmHg
T_Cell_Limit
0.15 K
Maximum permitted deviation from the
target measuring cell temperature during
measurement. If this value is exceeded, the
measurement is aborted and the alarm
TA_INACCURATE_TEMP is triggered.
T_Delta_Max
10 K
Maximum permitted temperature difference
between sample heat exchanger and
measuring cell while a sample stream is
active. If this value is exceeded, the alarm
TA_DELTA_TEMPERATURE is triggered.
T_Fine_Limit
0.1 T
Temperature tolerance in the state Wait
Fine Temperature.
T_Max
60.0 T
Maximum temperature for all temperature
measuring points.
T_Min
0.0 T
Minimum temperature for all temperature
measuring points.
TO_Wait_Fine
600 s
Time limit for the state Wait Fine
Temperature. If this limit is exceeded, the
alarm TA_TO_WAIT_FINE is triggered.
TO_Waitcoarse
(600-1800) s
Time limit for the state Wait Coarse
Temperature. If this value is exceeded,
the alarm TA_TO_WAIT_COARSE is
triggered.
TW_Piston
120 s
Time limit for reaching the measuring
piston position. If this limit is exceeded, the
alarm TA_PISTON_POSITION is triggered.
TW_Ready
5s
Hold time for the output Ready.
TW_StartUp
5s
Delay for reading the IO values after
starting PACS
TW_Stream_Switch
240 s
Minimum waiting time in the state Wait
fine Temperature after stream switching
(controller adjustment after disruption).
PACS Software for RVP-4
Version 1.0.0., 11.05.2007