Siemens SIMOREG DC-MASTER Operating Instructions Manual page 55

12.2010
PNU Description
The following situations can occur:
Determined voltage value < 145 V (lower limit in the characteristic diagram):
p51578 = 145 V should be set.
The successful turn-off operation by the SIMOREG CCP is assured in all
situations, however, the voltage load (or torque increase) of the motor that can
briefly occur for a turn-off operation is higher than necessary.
Determined voltage value lies between the lower limit (145 V) and the upper limit:
The voltage value determined should be set at p51578.
The successful turn-off operation by the SIMOREG CCP is assured in all
situations.
Determined voltage value > upper limit:
Operation involving the basic converter unit - SIMOREG CCP combination is not
permissible. The successful turn-off operation by the SIMOREG CCP is not
assured.
This problem may be able to be resolved by contacting the manufacturer.
Note:
When communications are established between the basic converter unit and
SIMOREG CCP (p50790=6), then the setpoint according to p51578 in the
SIMOREG CCP is set using its operating firmware. If the selected setpoint cannot
be reached due to the fact that the actual line supply voltage is too low, for
operating states < 4.0, the basic converter outputs Alarm A60321 - followed by
Fault F60320 (fault value 3) - to signal that the required charge voltage has not
been achieved.
If one of the relevant system parameters changes after commissioning, then the
correct setting of p51578 should be checked, and if required, it should be
appropriately set again.
r51579. CO/BO: CCP command/ CCP command
0...7
Description:
Display and connector output for the commands from the SINAMICS DCM to
the SIMOREG CCP.
Bit array Signal name
Bit 00 Fire turn-off thyristors
Bit 01 Line supply voltage (armature) in the
tolerance range
Bit 02 CCP connected to the parallel switching
master
Bit 03 Main contactor CLOSE
Bit 04 Torque direction I active
Bit 05 Torque direction II active
Bit 06 Reserved (always 1)
Bit 07 Reserved (always 1)
Note:
CCP: Converter Commutation Protector
p51580 Commutation monitoring control word / commut_monit STW
Description:
Setting of the criterion to detect a commutation fault for the commutation
monitoring.
Bit array Signal name
Bit 00 Use criterion 1 (message from the thyristor
blocking voltage)
Bit 01 Use criterion 2 (curvature of the current cusp)
Bit 02 Use criterion 3 (magnitude of the current
actual value)
Note:
Converter commutation is permanently monitored. When a commutation fault
is detected, Fault F60030 is output and thyristor turn-off is initiated by the CCP
(if being used). The detection of a commutation fault is based on 3 decision-
making criteria. Using this parameter, these can be individually set for test
purposes.
If several decision-making criteria are to be evaluated, then the sum of the
corresponding numbers should be set.
Siemens AG 6RX1700-0DD74
SIMOREG DC-MASTER Converter Commutation Protector
1 signal 0 signal
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
Yes No
1 signal 0 signal
Yes No
Yes No
Yes No
Operating Instructions
Commissioning
Value range No. of
[dimension] indices
Graduation Factory
setting (FS)
0 to 255 Ind: None
1 -
1
0 to 7 Ind: None
1 FS = 7
1
ENGLISH
Access
level
3
3
55