Drive System Application
Controlling the main contactor by using free function
blocks for MICROMASTER 4, SINAMICS G120 &
SINAMICS G120D
Application description
for MICROMASTER 4, SINAMICS G120 and SINAMICS G120D
Warranty, liability and support
Controlling the main contactor by using free function blocks for
MICROMASTER 4, SINAMICS G120 & SINAMICS G120D
The Application Examples are not binding and do not claim to be complete
regarding the circuits shown, equipping and any eventuality. The Application
Examples do not represent customer-specific solutions. They are only intended
to pro-vide support for typical applications. You are responsible in ensuring that
the de-scribed products are correctly used. These Application Examples do not
relieve you of the responsibility in safely and professionally using, installing,
operating and servicing equipment. When using these Application Examples, you
recognize that Siemens cannot be made liable for any damage/claims beyond
the liability clause described. We reserve the right to make changes to these
Application Examples at any time without prior notice. If there are any deviations
between the recommendations provided in these Application Examples and
other Siemens publications - e.g. Catalogs - then the contents of the other
documents have priority.
Copyright © Siemens AG 2008 All rights reserved
MainContactorControl_en_V1_4.doc
Note
ID-No: 22078212
Version 1.4
Issue December 2010
2/28
Warranty, liability and support
Controlling the main contactor by using free function blocks for
MICROMASTER 4, SINAMICS G120 & SINAMICS G120D
ID-No: 22078212
Warranty, liability and support
We do not accept any liability for the information contained in this document.
Any claims against us - based on whatever legal reason - resulting from the use of
the examples, information, programs, engineering and performance data etc.,
described in this Application Examples shall be excluded. Such an exclusion shall
not apply in the case of mandatory liability, e.g. under the German Product Liability
Act (“Produkthaftungsgesetz”), in case of intent, gross negligence, or injury of life,
body or health, guarantee for the quality of a product, fraudulent concealment of a
deficiency or breach of a condition which goes to the root of the contract
(“wesentliche Vertragspflichten”). However, claims arising from a breach of a
condition which goes to the root of the contract shall be limited to the foreseeable
damage which is intrinsic to the contract, unless caused by intent or gross
negligence or based on mandatory liability for injury of life, body or health The
above provisions does not imply a change in the burden of proof to your detriment.
Copyright © Siemens AG 2008 All rights reserved
MainContactorControl_en_V1_4.doc
Copyright© 2008 Siemens A&D. It is not permissible to transfer or copy these
Application Examples or excerpts of them without first having prior
authorization from Siemens A&D in writing.
If you have any recommendations relating to this document then please send them
to us at the following e-mail address:
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Version 1.4
Issue December 2010
3/28
Preposition
Controlling the main contactor by using free function blocks for
MICROMASTER 4, SINAMICS G120 & SINAMICS G120D
ID-No: 22078212
Preposition
Aim of the application
A circuit is described in this application that allows the drive inverter itself to close
the main contactor and automatically enable operation of the drive inverter.
Scope
No additional control equipment is necessary in the form of external components
that ensure the correct sequencing.
Exclusion
This application does not provide a description of
•
Basic commissioning of the drive inverter
•
Commissioning higher-level controls
Copyright © Siemens AG 2008 All rights reserved
MainContactorControl_en_V1_4.doc
It is assumed that the reader has basic knowledge of these subjects.
The solution can be used for:
•
MICROMASTER MM430
•
MICROMASTER MM440
•
SINAMICS G120 with Control Units CU240…
•
SINAMICS G120D with Control Units CU240…
The drive inverter must be supplied from an external 24V power supply:
•
MICROMASTER 4 via MICROMASTER Profibus Module
•
SINAMICS G120 via terminals 31 and 32 of the Control Unit
•
SINAMICS G120D via the logical 24V supply (IN) of the Control Unit
Reference to the Automation and Drives Service & Support
This article is from the Internet Application Portal of the Automation and Drives
Service & Support. You can go directly to the download page of this document
using this link.
http://support.automation.siemens.com/WW/view/en/22078212
Version 1.4
Issue December 2010
4/28
Application description
Table of Contents
Controlling the main contactor by using free function blocks for
MICROMASTER 4, SINAMICS G120 & SINAMICS G120D
ID-No: 22078212
Table of Contents
Table of Contents ................................................................................................ 5
Application description ............................................................................................... 6
1
Task solution ........................................................................................ 6
2
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
Commissioning..................................................................................... 8
Main contactor CLOSE command........................................................ 8
Feedback signal from the main contactor ............................................ 9
ON command for the frequency inverter ............................................ 10
OFF command for the frequency inverter .......................................... 10
OPEN command for the main contactor ............................................ 10
Sequence of the power-on / power-off sequence for main contactor
control................................................................................................. 11
Sequence of the power-on / power-off sequence for main contactor
control for MICROMASTER 440/430 ................................................. 11
Sequence of the power-on / power-off sequence for main contactor
control for SINAMICS G120 and SINAMICS G120D ......................... 12
Parameter settings: ............................................................................ 13
Connection of the terminals ............................................................... 16
Connection of the free blocks............................................................. 20
3
Executing scripts in STARTER .......................................................... 22
2.6.1
Copyright © Siemens AG 2008 All rights reserved
MainContactorControl_en_V1_4.doc
2.6.2
Appendix and references .......................................................................................... 25
4
4.1.1
4.2
4.3
Version 1.4
Further notes, tips and tricks.............................................................. 25
Influence of high-frequency load currents on the main current path of
the contactor ....................................................................... 25
Selection table for main contactors“................................................... 27
Internet link data................................................................................. 28
History ................................................................................................ 28
Issue December 2010
5/28
Application description
Task solution
Controlling the main contactor by using free function blocks for
MICROMASTER 4, SINAMICS G120 & SINAMICS G120D
ID-No: 22078212
Application description
Contents
MICROMASTER 4, SINAMICS G120 and SINAMICS G120D drive inverters are
designed to be directly connected to the line supply - i.e. a main contactor is not
required. However, for several applications main or input contactors are required.
A circuit is described in this application that offers the drive inverter the following
possibilities:
1
•
The drive inverter itself can close the main contactor
•
Operation of the drive inverter is automatically enabled
Task solution
The circuit is implemented using free function blocks (FFBs).
Copyright © Siemens AG 2008 All rights reserved
MainContactorControl_en_V1_4.doc
This means that there is no additional control expenditure in the form of external
components - that would be necessary in order to ensure the correct sequencing.
Correct operation requires an external 24V DC power supply for the drive inverter:
•
MICROMASTER 4 via MICROMASTER Profibus Module
•
SINAMICS G120 via terminals 31 and 32 of the Control Unit
•
SINAMICS G120D via the logical 24V supply (IN) of the Control Unit
This solution can be used for:
Version 1.4
•
MICROMASTER MM430
•
MICROMASTER MM440
•
SINAMICS G120 with Control Units CU240…
•
SINAMICS G120D with Control Units CU240…
Issue December 2010
6/28
Application description
Task solution
Copyright © Siemens AG 2008 All rights reserved
MainContactorControl_en_V1_4.doc
Controlling the main contactor by using free function blocks for
MICROMASTER 4, SINAMICS G120 & SINAMICS G120D
Figure 1-1
ID-No: 22078212
System overview, main contactor ON / OFF
Note:
Please ensure that all of the contactors in the electrical cabinet are equipped with
noise suppression devices.
AC contactors are equipped with RC suppression devices.
DC contactors are equipped with “free-wheeling” diodes.
Version 1.4
Issue December 2010
7/28
Application description
Commissioning
Controlling the main contactor by using free function blocks for
MICROMASTER 4, SINAMICS G120 & SINAMICS G120D
2
Commissioning
2.1
Main contactor CLOSE command
ID-No: 22078212
The main contactor (CLOSE command) can be controlled from any command
source. The user defines the command source (set P0700).
Possible command sources for MM4:
•
BOP (keypad)
•
Digital input, e.g. DI1
•
USS at the BOP link
•
USS at the COM link
•
PROFIBUS
Copyright © Siemens AG 2008 All rights reserved
MainContactorControl_en_V1_4.doc
Possible command sources for SINAMICS G120 and SINAMICS G120D:
•
BOP (keypad)
•
Digital input, e.g. DI0
•
PROFINET
•
USS at the BOP link
•
USS at the COM link
•
PROFIBUS
From the selected command source, the user activates the independent contactor
closing. In so doing, flip-flop RS-FF1 is set.
The RS-FF1 output signal energizes the main contactor via the main contactor
relay. For MM4 this is via the digital output DO1 and for the frequency inverters
G120 and G120D via DO0.
Version 1.4
Issue December 2010
8/28
Application description
Commissioning
Controlling the main contactor by using free function blocks for
MICROMASTER 4, SINAMICS G120 & SINAMICS G120D
2.2
ID-No: 22078212
Feedback signal from the main contactor
The power-on operation must be monitored in order to avoid a possible fault
message from the drive inverter caused by the contactor (~ 40 – 100ms switching
delay).
There are two versions of this monitoring function that will now be described in the
following.
The circuits are implemented using free function blocks (FFBs).
Version a) Feedback signal contact
The "ON signal" is evaluated using the feedback signal contact of the main
contactor that is connected to digital input DI2 for MM4 / DI1 for G120 and G120D
> P2812[1] = 722.1 (set P0702 = 99 – BiCo).
Version b) DC link voltage comparison
Copyright © Siemens AG 2008 All rights reserved
MainContactorControl_en_V1_4.doc
By comparing the DC link voltage with a specific value the drive inverter is only
powered-up if the drive unit has been pre-charged (Fig. 2-1). This prevents the
drive unit from being prematurely enabled - that would result in a fault trip. In the
example, the numerical value for the DC link voltage comparator P2889 is for a
drive inverter with an input voltage of 3-ph. 400 V AC. For other line supply
conditions, parameter P2889 must be adapted as follows depending on the
reference voltage P2001:
•
230 V, 1 AC~: P2889 = ~ 28 % of P2001 = 1000 V
•
400 V, 3 AC ~: P2889 = ~ 48 % of P2001 = 1000 V
•
500 V, 3 AC~: P2889 = ~ 60 % of P2001 = 1000 V
Figure 2-1 Comparison of the DC link voltage - main contactor control
Depending on this comparator element or the feedback signal contact the inverter
is enabled or the ON/OFF1 command is enabled.
Version 1.4
Issue December 2010
9/28
Application description
Commissioning
Controlling the main contactor by using free function blocks for
MICROMASTER 4, SINAMICS G120 & SINAMICS G120D
2.3
ID-No: 22078212
ON command for the frequency inverter
The frequency inverter is started if the main contactor has been closed via
DO1/DO0 and the feedback signal from the main contactor has been received.
2.4
OFF command for the frequency inverter
When powering-down (OFF), the inverse sequence applies. When the OFF
command is issued (command source = 0), the frequency inverter is ramped-down
to standstill (zero speed); the main contactor is then opened.
2.5
OPEN command for the main contactor
Copyright © Siemens AG 2008 All rights reserved
MainContactorControl_en_V1_4.doc
The status signal "Operation" r0052 bit02 for MM440 and "Ready for operation"
r0052 bit01 for G120 and G120D are delayed by timer 1 and resets flip-flop RSFF1.
The RS-FF1 output signal opens the main contactor via the main contactor relay.
For MM4 frequency inverters this is via digital output DO1 and for G120 and
G120D via DO0.
Instead of the status signals r0052 bit02 for MM4 and r0052 bit01 for G120 and
G120D, the status signal "f_act > P2167 (f_off)" r0053 bit01 can be used together
with the setting "Shutdown frequency f_off" P2167 = 0 Hz for all frequency
inverters.
Version 1.4
Issue December 2010
10/28
Application description
Commissioning
Controlling the main contactor by using free function blocks for
MICROMASTER 4, SINAMICS G120 & SINAMICS G120D
ID-No: 22078212
2.6
Sequence of the power-on / power-off sequence for
main contactor control
2.6.1
Sequence of the power-on / power-off sequence for main contactor
control for MICROMASTER 440/430
ON/OFF1 via:
BOP, DI1, USS or 1
PROFIBUS
t
0
Main contactor ON/OFF:
1
DO1
t
Copyright © Siemens AG 2008 All rights reserved
MainContactorControl_en_V1_4.doc
0
ON/OFF1
Cont.Wrd.1 r0054.0 1
t
0
Drive running r0052.2 or
f_act > 2167 (f_off) r0053.1
with P2167 = 0 Hz
1
t
0
RFG active
1
Ramp-up along RFG
t
0
Ramp-down along RFG
Figure 2-2 Sequence of the power-on / power-off sequence for main contactor control for
MICROMASTER 440/430
Version 1.4
Issue December 2010
11/28
Application description
Commissioning
Controlling the main contactor by using free function blocks for
MICROMASTER 4, SINAMICS G120 & SINAMICS G120D
Sequence of the power-on / power-off sequence for main contactor
control for SINAMICS G120 and SINAMICS G120D
Copyright © Siemens AG 2008 All rights reserved
MainContactorControl_en_V1_4.doc
2.6.2
ID-No: 22078212
Figure 2-3 Sequence of the power-on / power-off sequence for main contactor control for
SINAMICS G120 and SINAMICS G120D
Version 1.4
Issue December 2010
12/28
Application description
Commissioning
Controlling the main contactor by using free function blocks for
MICROMASTER 4, SINAMICS G120 & SINAMICS G120D
2.7
ID-No: 22078212
Parameter settings:
Table 2-1 Parameter settings
Copyright © Siemens AG 2008 All rights reserved
MainContactorControl_en_V1_4.doc
Parameter
No.
Designation
Parameter value
Note / comments
P0700[0]
Selection of command source
?*
Select the source for the ON command for
the main contactor:
1: BOP (keypad)
2: Terminal
4: USS on BOP link
5: USS on COM link
6: PROFIBUS or PROFINET (only for
CU240S/D PN/PN-F)
P0701[0]
MM4: Digital input 1 (DI1)
CU240: Digital input 0 (DI0)
99
Enable BICO parameterization, only if
P0700 = 2
P0702[0]
MM4: Digital input 2 (DI2)
CU240: Digital input 1 (DI1)
99
Enable BICO parameterization, only if the
feedback from the feedback contact of the
main contactor is selected
P0922
Selection of PROFIdrive
Standard Telegram
999
Free BICO connection, only for CU240
P0731[0]
MM4: Digital output 1 (DO1)
r2841.0
MM4: DO1 = RS-FF1 output
CU240: Digital output 0
(DO0)
CU240 DO0 = RS-FF1 output
P0840[0]
BI: ON/OFF 1
r2815.0
Enable ON/OFF1 = Output AND 3
P0852[0]
BI: Pulse enable
r2813.0
Pulse enable = output AND 2
P1000[0]
Selection of frequency
setpoint
?
Set frequency setpoint:
1: MOP setpoint
2: Analog setpoint
3: Fixed frequency
4: USS on BOP link
5: USS on COM link
6: CB on COM link
*
? = Plant dependent, not relevant
Version 1.4
Issue December 2010
13/28
Application description
Commissioning
Controlling the main contactor by using free function blocks for
MICROMASTER 4, SINAMICS G120 & SINAMICS G120D
Copyright © Siemens AG 2008 All rights reserved
MainContactorControl_en_V1_4.doc
Parameter
No.
Designation
Parameter value
ID-No: 22078212
Note / comments
P2150[0]
Hysteresis, f1 threshold
0.5 Hz
Hysteresis, f1 threshold
P2155[0]
f1 threshold
1 Hz
Frequency threshold 1
P2800
Enable FFB
1
1 = FFB enabled
P2801[0]
Activate AND 1
1
1 = AND 1 at level 1
P2801[1]
Activate AND 2
1
1 = AND 2 at level 1
P2801[2]
Activate AND 3
1
1 = AND 3 at level 1
P2801[14]
Activate RS-FF 1
1
RS-FF 1 at level 1
P2802[0]
Activate timer 1
1
1 = timer 1 at level 1
P2802[12]
Activate CMP 1
1
1 = CMP 1 at level 1
P2810[0]
BI: AND 1 index 0
r2852.0
AND 1 index 0 = Output timer 1
P2810[1]
BI: AND 1 index 1
r0053.5
AND 1 index 0 =
r0053.5 fact <= P2155
P2812[0]
BI: AND 2 index 0
r2841.0
AND 2 index 0 = Output RS-FF1
P2812[1]
BI: AND 2 index 1
r0722.1 or
AND 2 index 1 =
DI2 (MM4) / DI1 (CU240) if feedback
signal contact is selected
or
r2886.0
Output CMP 1 if DC link voltage
comparison is selected.
P2814[0]
BI: AND 3 index 0
r2813.0
AND 3 index 0 = Output AND 2
P2814[1]
BI: AND 3 index 1
r0019.0 or
r0722.0 or
r2032.0 or
r2036.0 or
r2090.0 or
r8890.0
AND 3 index 1 =
r0019.0: BOP
r0722.0: DI1 (MM4) / DI0 (CU240)
r2032.0: USS on BOP link
r2036.0: USS on COM link
r2090.0: PROFIBUS
r8890.0: PROFINET (only for CU240S/D
PN/PN-F)
Version 1.4
Issue December 2010
14/28
Application description
Commissioning
Controlling the main contactor by using free function blocks for
MICROMASTER 4, SINAMICS G120 & SINAMICS G120D
Parameter
No.
P2840[0]
Designation
BI: RS-FF1 index 0
Parameter value
r0019.0 or
r0722.0 or
r2032.0 or
r2036.0 or
r2090.0 or
r8890.0
ID-No: 22078212
Note / comments
RS-FF1 index 0 =
r0019.0: BOP
r0722.0: DI1 (MM4) / DI0 (CU240)
r2032.0: USS on BOP link
r2036.0: USS on COM link
r2090.0: PROFIBUS
Copyright © Siemens AG 2008 All rights reserved
MainContactorControl_en_V1_4.doc
r8890.0: PROFINET (only for
CU240S/D PN/PN-F)
P2840[1]
BI: RS-FF1 index 1
r2811.0
RS-FF1 index 1 = Output AND 1
P2849
BI : Timer 1
MM4: r0052.2 or
r0053.1 + P2167
= 0 Hz
CU240: r0052.1
or r0053.1 +
P2167 = 0 Hz
MM4: Status word 1: Drive running or
Status word 2: f_act > P2167 (f_off) +
Switch-off frequency f_off P2167 = 0 Hz
CU240: Status word 1: Drive ready to run
or Status word 2: f_act > P2167 (f_off) +
Switch-off frequency f_off P2167 = 0 Hz
P2850
Delay of timer 1
0.5 s
Delay time = 0.5 seconds
P2851
Timer mode
2
Power-on/power-off delay
P2885[0]
BI: CMP 1 index 0
MM4: r0026
CMP 1 index 0 =
CU240: r0026.0
Absolute value VDC link
P2885[1]
BI: CMP 1 index 1
P2889
CMP 1 index 1 = Fixed connector 1
P2889
Fixed connector 1
48 %
Fixed connector 1 = % of P2001
reference voltage:
230 V, 1 AC: = ~ 28%
400 V, 3 AC: = ~ 48%
500 V, 3 AC: = ~ 60%
Version 1.4
Issue December 2010
15/28
Copyright © Siemens AG 2008 All rights reserved
MainContactorControl_en_V1_4.doc
Application description
Commissioning
Controlling the main contactor by using free function blocks for MICROMASTER 4, SINAMICS G120 & SINAMICS G120D
2.8
ID-No: 22078212
Connection of the terminals
L1
L2
L3
PE
24V external
+
MICROMASTER 430/440
Connection of the free blocks 1)
AC
R
&
2) The (–) terminal 2 of the power supply of the PROFIBUS
module is at the same potential as the insulated 0V terminal 28
of the MM430/440.
3) Terminal 9 of the MM430/MM40 can be used for the power
supply of digital inputs DI1 and DI2, if the max. current demand
does not exceed 100 mA.
L3
P0731[0]
r2841
r2841
L2
Q
L1
r0019.0
r0722.0
r2032.0
r2036.0
r2090.0
PE
Main contactor ON via:
BOP
Digital input DI1
USS on BOP link
USS on COM link
PROFIBUS
K1
Main contactor ON/OFF via DO1
1) This is the simplified representation of the logic configured in
the frequency inverter. All of the interconnections between the
free function blocks for MM430/MM440 are shown in Fig. 2-8.
DC
ON command
for drive
Main contactor OFF via:
St.Wrd.1 Bit02 r0052.2
St.Wrd.2 Bit01 r0053.1
MICROMASTER
PROFIBUS
Module
Drive ON/OFF
OFF command for drive:
BOP
Digital input DI1
USS on BOP link
USS on COM link
PROFIBUS
Feedback from the main
contactor: DI2
r0722.1
Pre-charge finished r2886
r0019.0
r0722.0
r2032.0
r2036.0
r2090.0
&
P0840[0]
r2815
r2815
DO1
24V external
PE
AC
W
COM
NO
NC
20 1918
V
28
PE
9
0V
+24V
5 6
DC
U
1 2
DI2
DI1
0V
+24V
2)
3)
Main contactor
ON via DI1
U
Feedback signal K1 to DI2
V
W PE
M
3~
Figure 2-4 Controlling the main contactor for MICROMASTER 430/440 via DO1: connection of the terminals
Version 1.4
Issue December 2010
16/28
Copyright © Siemens AG 2008 All rights reserved
MainContactorControl_en_V1_4.doc
Application description
Commissioning
Controlling the main contactor by using free function blocks for MICROMASTER 4, SINAMICS G120 & SINAMICS G120D
ID-No: 22078212
4) This is the simplified representation of the logic configured in
the frequency inverter. All of the interconnections of the free
function blocks for SINAMICS G120 / SINAMICS G120D are
shown in Fig. 2-9.
5) Terminal 9 of the CU240 … Control Unit can be used for the
power supply of the digital inputs DI0 and DI1, if the max.
current demand does not exceed 100 mA.
PE
L1
L2
L3
PE
U
V
W
PE
COM
NO
NC
0V
+24V
DI1
DI0
0V
+24V
4)
5)
Figure 2-5 Controlling the main contactor for SINAMICS G120 via DO0: connection of the terminals
Version 1.4
Issue December 2010
17/28
Copyright © Siemens AG 2008 All rights reserved
MainContactorControl_en_V1_4.doc
Application description
Commissioning
Controlling the main contactor by using free function blocks for MICROMASTER 4, SINAMICS G120 & SINAMICS G120D
ID-No: 22078212
L1
L2
L3
PE
SINAMICS G120D
-
Control Unit CU240D...
Connection of the free blocks
Main contactor ON/OFF via DO0
Main contactor ON via:
BOP
Digital input DI0
PROFINET
USS on BOP link
USS on COM link
PROFIBUS
K1
7)
r0019.0
r0722.0
r8890.0
r2032.0
r2036.0
r2090.0
Q
HAN Q4/2
P0731[0]
r2841
r2841
Power
Module
PM250D
R
ON command
for drive
&
L1
L2
L3
1
2
3
PE
4
11
12
Line filter
class A
AC
Main contactor OFF via:
DC
Drive ON/OFF
St.Wrd.1 Bit01 r0052.1
St.Wrd.2 Bit01 r0053.1
OFF command for drive:
Feedback from the main
contactor: DI1
r0722.1
Pre-charge finished r2886
BOP
Digital input DI0
PROFINET
USS on BOP link
USS on COM link
PROFIBUS
r0019.0
r0722.0
r8890.0
r2032.0
r2036.0
r2090.0
&
r2815
PE
24V external6)
switched
+
6) The non-switched and switched 24 V supply are provided
using appropriate external sources.
The non-switched 24 V supply is designed to provided
permanent power to the internal control electronics, the power
module electronics, the digital inputs and the encoder input.
The switched 24 V supply is provided to power only the digital
outputs - these outputs are isolated from the rest of the drive
electronics. This configuration allows the digital outputs to be
switched on or off without disrupting the normal functioning of
the Inverter.
If it is not necessary to disconnect the 24 V supply then the
switched as well as also the non-switched 24 V can be taken
from the same supply (you can connect cable conductors "0 V
switched" with "0 V non-switched" and "+24 V switched" with
"+24 V non-switched" - refer to Fig. 2-7).
7) This is the simplified representation of the logic configured
in the frequency inverter. All of the interconnections of free
function blocks for SINAMICS G120 / SINAMICS G120D are
shown in Fig. 2-9.
P0840[0]
r2815
DO0
DC
3
5
PE 24V
1
0V
4
2
1
DI0 DI1 24V
3
0V
DO0
DI1
2
0V
Main contactor
ON via DI0
24V
PE
1
M12 – 5 pole
DI0, DI1
M12 – 5 pole
DO0, DO1
2
3
4
PE
5
5
8
4
6
DO1 0V DO0 PE
Feedback signal K1
to DI1
4
7/8" – 16UN
24V external (IN)
DI0
AC
PE
5
2
PE
PE
1
7
3
U
V
W
HAN Q8
M
3~
6)
24V external
non-switched
+
-
Figure 2-6 Controlling the main contactor for SINAMICS G120 via DO0: connection of the terminals; 24 V supply using switched and non-switched external sources
Version 1.4
Issue December 2010
18/28
Copyright © Siemens AG 2008 All rights reserved
MainContactorControl_en_V1_4.doc
Application description
Commissioning
Controlling the main contactor by using free function blocks for MICROMASTER 4, SINAMICS G120 & SINAMICS G120D
ID-No: 22078212
L1
L2
L3
PE
24V external
non-switched
SINAMICS G120D
-
+
8) This is the simplified representation of the logic
configured in the frequency inverter. All of the
interconnections between free function blocks for
SINAMICS G120 / SINAMICS G120D are shown in
Fig. 2-9.
Control Unit CU240D...
Connection of the free blocks
K1
Main contactor ON/OFF via DO0
Main contactor ON via:
BOP
Digital input DI0
PROFINET
USS on BOP link
USS on COM link
PROFIBUS
8)
r0019.0
r0722.0
r8890.0
r2032.0
r2036.0
r2090.0
Q
HAN Q4/2
P0731[0]
r2841
r2841
Power
Module
PM250D
R
ON command
for drive
&
L1
L2
L3
1
2
3
PE
4
11
12
PE
Line filter
class A
AC
Main contactor OFF via:
DC
Drive ON/OFF
St.Wrd.1 Bit01 r0052.1
St.Wrd.2 Bit01 r0053.1
OFF command for drive:
BOP
Digital input DI0
PROFINET
USS on BOP link
USS on COM link
PROFIBUS
Feedback from the main
contactor: DI1
r0722.1
Pre-charge finished r2886
r0019.0
r0722.0
r8890.0
r2032.0
r2036.0
r2090.0
&
r2815
P0840[0]
r2815
DO0
DC
3
5
PE 24V
1
0V
4
2
1
DI0 DI1 24V
3
0V
DO0
DI1
2
0V
Main contactor
ON via DI0
24V
PE
1
M12 – 5 pole
DI0, DI1
M12 – 5 pole
DO0, DO1
2
3
4
PE
5
5
DO1 0V DO0 PE
Feedback signal K1
to DI1
4
7/8" – 16UN
24V external (IN)
DI0
AC
PE
5
8
4
6
2
PE
PE
1
7
3
U
V
W
HAN Q8
M
3~
Figure 2-7 Controlling the main contactor for SINAMICS G120 via DO0: connection of the terminals; 24 V supply using only a non-switched external source
Version 1.4
Issue December 2010
19/28
Copyright © Siemens AG 2008 All rights reserved
MainContactorControl_en_V1_4.doc
Application description
Commissioning
Controlling the main contactor by using free function blocks for MICROMASTER 4, SINAMICS G120 & SINAMICS G120D
2.9
ID-No: 22078212
Connection of the free blocks
9) A source should be selected for the CLOSE command
of the main contactor, e.g. digital input DI1: P0700 = 2.
9)
10) As OPEN command for the main contactor, either
the status signal ZSW1 bit02 Operation or ZSW2 bit01
f_act > P2167 with P2167 = 0 Hz can be selected.
11) Either the signal from the feedback signal contact of
the main contactor can be used as feedback signal or
the signal from the CMP1 "Pre-charging completed".
10)
12) The frequency inverter is started if the main
contactor has been closed via DO1 and the feedback
signal has been received from the main contactor.
13) When powering-down, the inverse sequence applies.
When the OFF command is issued (command source =
0) the frequency inverter ramps down to standstill (zero
speed) and then the main contactor is opened.
11)
12)
13)
Figure 2-8 Controlling the main contactor for MICROMASTER 430/440 via DO1: connection of the free blocks
Version 1.4
Issue December 2010
20/28
Copyright © Siemens AG 2008 All rights reserved
MainContactorControl_en_V1_4.doc
Application description
Commissioning
Controlling the main contactor by using free function blocks for MICROMASTER 4, SINAMICS G120 & SINAMICS G120D
ID-No: 22078212
14)
14) A source should be selected for the CLOSE
command of the main contactor, e.g. digital input DI0:
P0700 = 2.
15) Either the status signal ZSW1 bit01 ready for
operation or ZSW2 bit01 f_act > P2167 with P2167 = 0
Hz should be selected for the OPEN command.
15)
16) Either the signal from the feedback signal contact of
the main contactor or the signal from the CMP1 "Precharging completed" can be selected as feedback signal
from the main contactor.
17) The frequency inverter is started if the main
contactor has been closed via DO0 and the feedback
signal has been received from the main contactor.
18) When powering-down the inverse sequence applies.
When the OFF command is issued (command source =
0), the frequency inverter ramps down to standstill (zero
speed) and then the main contactor is opened.
16)
17)
18)
Figure 2-9 Controlling the main contactor for SINAMICS G120 and SINAMICS G120D via DO0: connection of the free blocks
Version 1.4
Issue December 2010
21/28
Application description
Executing scripts in STARTER
Controlling the main contactor by using free function blocks for
MICROMASTER 4, SINAMICS G120 & SINAMICS G120D
3
ID-No: 22078212
Executing scripts in STARTER
For fast parameter changes, you can use the attached script files (for CU240 and
MM4).
Note:
Before you use the corresponding script, please set your drive inverter to the
factory settings (P0010 = 30, P0970 = 1).
The procedure in detail:
1. Save the attached script file in a folder on your computer hard drive.
Copyright © Siemens AG 2008 All rights reserved
MainContactorControl_en_V1_4.doc
2. Set-up a script folder for the drive in your STARTER project by clicking with the
righthand mouse key on the drive; then click on "Expert" (lefthand mouse key)
and on "Insert script folder".
A new folder appears "SCRIPTS" at the lower end of the tree
3. Import the script from your folder into STARTER as described below:
Version 1.4
–
Using the righthand mouse key click on the tab "SCRIPTS";
–
Click on "ASCII import..." and open the required script file;
–
Assign a name to the opened file and acknowledge with OK.
Issue December 2010
22/28
Application description
Executing scripts in STARTER
Controlling the main contactor by using free function blocks for
MICROMASTER 4, SINAMICS G120 & SINAMICS G120D
ID-No: 22078212
4. Execute the script by clicking with the righthand mouse key on the script and
clicking "Accept and execute";
or open the script by double clicking on it and then pressing the button
"Accept and execute".
Also refer to Entry ID: 32582476
5. Im ersten Fenster wählen Sie die Quelle für den EIN-Befehl für das
Hauptschütz aus. Geben Sie eine Zahl von 1 bis 6 für CU240 oder 1, 2, 4, 5, 6
für MM4 ein (die möglichen Einstellungen sind auf der Abbildung 3-1 zu sehen)
und drücken Sie auf den Button „OK“.
Copyright © Siemens AG 2008 All rights reserved
MainContactorControl_en_V1_4.doc
CU240:
MM4:
Figure 3-1 Selecting the source for the main contactor CLOSE command
6. In the second window, select the source of the main setpoint. Enter a number
of between 1 and 6 (the possible settings can be seen in Fig. 3-2) and press on
the "OK" button.
Figure 3-2 Selects the main setpoint source
Version 1.4
Issue December 2010
23/28
Application description
Executing scripts in STARTER
Controlling the main contactor by using free function blocks for
MICROMASTER 4, SINAMICS G120 & SINAMICS G120D
ID-No: 22078212
7. In the third window, select the source of the feedback signal. Either enter 1
(feedback signal contact) or 2 (DC link voltage comparison) and press on the
"OK" button.
Figure 3-3 Selecting the source of the feedback signal
Copyright © Siemens AG 2008 All rights reserved
MainContactorControl_en_V1_4.doc
8. If you have selected the DC voltage comparison as feedback signal from the
main contactor, then the next window opens in which you should select the line
supply voltage. Enter a 1 (230V, 1 AC~), 2 (400V, 3 AC~) or 3 (500V, 3 AC~)
and then press the "OK" button.
Figure 3-4 Selecting the line supply voltage
STARTER then writes all of the parameters required for parameterization into the
frequency inverter. After the script has been run the following message is output
"Script run completed".
Version 1.4
Issue December 2010
24/28
Appendix and references
Further notes, tips and tricks
Controlling the main contactor by using free function blocks for
MICROMASTER 4, SINAMICS G120 & SINAMICS G120D
ID-No: 22078212
Appendix and references
4
Further notes, tips and tricks
When using contactors in front of drive inverters with a pulsed voltage, there are
effects that can result in an increased temperature rise of the main contactor
contacts or failure of the contactor operating mechanism (solenoid coil). We
therefore generally recommend that the contactor should not be dimensioned
according to AC1 (non-inductive or weak inductive load, resistance ovens).
Practical engineering information for applications such as these is provided in the
following.
Influence of19high-frequency load currents on the main current path of the contactor
Copyright © Siemens AG 2008 All rights reserved
MainContactorControl_en_V1_4.doc
Motor currents with a higher basic frequency (> 50/60 Hz) result in higher losses
and therefore an increased temperature rise. The reason for this is the skin effect
and the formation of eddy currents in electrically conductive materials.
This additional temperature rise depends on the particular base frequency and the
harmonic component of the current. As an additional factor, at the secondary side
of drive inverters capacitive discharge currents can flow with respect to ground
potential or through capacitor circuits when filters are used. These must also be
taken into account when dimensioning the contactors.
When switching capacitances (DC link capacitors or filters) the capability of the
contactors in switching capacitors must also be taken into account.
Frequency combinations must be geometrically added using their component of the
particular frequency and the corresponding derating factor.
As an alternative, a de-rating factor of 0.8 should be used selecting/dimensioning
the contactor - this is a value gained from experience in the field. This safety factor
should be multiplied by the derating factor for the base frequency according to the
contactor characteristics.
19
Excerpt from the information sheet "Using switching devices in drive inverter systems"
Version 1.4
Issue December 2010
25/28
Appendix and references
Further notes, tips and tricks
Controlling the main contactor by using free function blocks for
MICROMASTER 4, SINAMICS G120 & SINAMICS G120D
ID-No: 22078212
Example
A Size S6 contactor with frame-type terminals should be able to conduct the
following current with a harmonic content (Table 135,51A).
Table 4-1 Calculation example for Size S6 contactor
Order No. of the harmonic
(1 = basic fundamental)
1
50Hz
5
250Hz
7
350Hz
11
550Hz
13
650Hz
15
750Hz
Per unit (PU) value of the current harmonic
referred to the basic fundamental
[%]
100.0
72.5
52.6
17.0
7.2
0.0
rms values of the individual oscillations
(as example, basic fundamental with 100A)
[A]
100.0
72.5
52.6
17.0
7.2
0.0
Copyright © Siemens AG 2008 All rights reserved
MainContactorControl_en_V1_4.doc
rms value of the total current
(geom. addition)
[A]
135.51
Derating factor depending on the harmonic
corresponding to diagram 1 for S6
Current of the particular harmonic
multiplied with its associated derating factor
[A]
Reduced permissible rms value of this
total current for the selected frame size
(geom. addition)
[A]
Resulting derating factor for the max. rated.
current of the selected frame size
(in this example, S6)
Irms= (100)2 + (72,5)2 + (52,6)2 + (17.
..0)2 + (7..2)2
1
0.725
0.675
0.620
0.600
0.575
100.0
52.6
35.5
10.5
4.3
0.0
118.97
0.878
Irms= (100)2 + (52,6)2 + (35,5)2 + (10,.5)2 + (4,3) 2
k derating
=
118 , 97 A
135 , 51 A
For this particular example, a 3RT1055... (S6, 75 kW, 150 A rated current) is not
sufficient as according to the calculation 150 A x 0.878 results in 131.70 A.
The rms value of the total current in this example is 135.51 A and is therefore
above the calculated, permissible rated current of 131.70 A.
The 3RT1056... (S6, 90 kW, 185 A rated current) has, for this application, a
calculated, permissible rated current of 185 A x 0.878 = 162.43 A - and can
therefore conduct a total current of 135.51 A.
In this application case the permissible operating current of the contactor is
reduced to 87.8% (referred to the specified rated operating current)!
Information and tables regarding the input currents and fuses for MICROMASTER
4 are provided in Catalog DA51.2, for SINAMICS G120 – in Catalog D11.1 or in the
Operating Instructions (Chapter, Technical data) of the particular drive inverter.
Version 1.4
Issue December 2010
26/28
Appendix and references
Further notes, tips and tricks
Controlling the main contactor by using free function blocks for
MICROMASTER 4, SINAMICS G120 & SINAMICS G120D
4.1.1
ID-No: 22078212
Selection table for main contactors“
Copyright © Siemens AG 2008 All rights reserved
MainContactorControl_en_V1_4.doc
Table 4-2
Rated current
[A]
Order number
MLFB
Rated
load / voltage
8
3RT1015
3KW/400V
22
3RT1016
4KW/400V
40
3RT1025
7,5KW/400V
50
3RT1034
15KW/400V
60
3RT1035
18,5KW/400V
100
3RT1044
30KW/400V
120
3RT1045
37KW/400V
140
3RT1046
45KW/400V
185
3RT1055
75KW/400V
215
3RT1056
90KW/400V
275
3RT1064
110KW/400V
330
3RT1065
132KW/400V
430
3RT1075
200KW/400V
610
3RT1076
250KW/400V
Further information pleasefind at: „Industrial Controls SIRIUS“
Version 1.4
Issue December 2010
27/28
Appendix and references
Further notes, tips and tricks
Controlling the main contactor by using free function blocks for
MICROMASTER 4, SINAMICS G120 & SINAMICS G120D
4.2
ID-No: 22078212
Internet link data
This list is in no way complete and only reflects a selection of suitable references.
Table 4-3
Copyright © Siemens AG 2008 All rights reserved
MainContactorControl_en_V1_4.doc
Subject area
4.3
Title
\1\
Catalogs [INTRANET]
DA51.2, D11.1
\2\
Manual
MM440
\3\
Manual
MM430
\4\
Manual
SINAMISC G120
\5\
Manual
SINAMICS G120D
\6\
FAQ
How can I transfer projects from DriveMonitor into
STARTER?
\7\
FAQ
Using the external 24 V power supply at the
MICROMASTER 4 Profibus Module
\8\
FAQ
Cascading the 24 Volt power supply of the
CU240D
History
Table 4-4 History
Version
V1
Version 1.4
Datum
Change
March 2003
First edition
V1.1
November 2005
Design revised
V1.2
September 2007
Text and figures revised, chapter "Further notes..."
inserted.
V1.3
February 2008
Text and figures revised, scripts written, chapter
“Executing scripts in STARTER” inserted.
1.4
December 2010
Chapter 4.1.1 new
Issue December 2010
28/28