Co: Ccp I2T Value Voltage Limiting Chopper 1; Co: Ccp I2T Value Voltage Limiting Chopper 2; Ccp Chopper Voltage Setpoint Response Threshold Upper; Ccp Turn-Off Capacitors Pre-Charging Voltage Setpoint - Siemens SINAMICS DCM List Manual

2 Parameters
2.2 List of parameters
r51575 CO: CCP I2t value voltage limiting chopper 1 / CCP I2t chopper 1
DC_CTRL Can be changed: -
Data type: FloatingPoint32
P-Group: -
Not for motor type: -
Min
- [%]
Description: Displays the I2t value for the voltage limiting chopper 1 for Converter Commutation Protector (CCP).
r51576 CO: CCP I2t value voltage limiting chopper 2 / CCP I2t chopper 2
DC_CTRL Can be changed: -
Data type: FloatingPoint32
P-Group: -
Not for motor type: -
Min
- [%]
Description: Displays the I2t value for the voltage limiting chopper 2 for Converter Commutation Protector (CCP).
p51577 CCP chopper voltage setpoint response threshold upper / CCP V_set thr up
DC_CTRL Can be changed: T
Data type: FloatingPoint32
P-Group: -
Not for motor type: -
Min
850 [V]
Description: Sets the upper response threshold of the voltage limiter implemented in the CCP.
During the turn-off operation of the CCP when reducing the armature current, this limits the counter voltage that is
created - and which is also necessary - to a non-hazardous value for the basic device and for the associated CCP.
Note: CCP: Converter Commutation Protector
The parameter is set automatically during the "optimization run for CCP" (p50051 = 30).
The correct setting of this parameter can be taken from the following reference:
SIMOREG CCP Operating Instructions
p51578 CCP turn-off capacitors pre-charging voltage setpoint / C pre-ch V_set
DC_CTRL Can be changed: T
Data type: FloatingPoint32
P-Group: -
Not for motor type: -
Min
145 [V]
Description: Sets the minimum charging voltage required for the turn-off capacitors used in the CCP to successfully turn off the
thyristors.
This value is used as setpoint for the two-level controller, which precharges the turn-off capacitors from the line
supply.
The maximum pre-charging voltage that can be reached is limited by the average rectified value of the line voltage
that is actually connected.
Note: CCP: Converter Commutation Protector
The parameter is set automatically during the "optimization run for CCP" (p50051 = 30).
The correct setting of this parameter can be taken from the following reference:
SIMOREG CCP Operating Instructions
532
Calculated: -
Dyn. index: -
Unit group: -
Scaling: PERCENT
Max
- [%]
Calculated: -
Dyn. index: -
Unit group: -
Scaling: PERCENT
Max
- [%]
Calculated: -
Dyn. index: -
Unit group: -
Scaling: -
Max
2900 [V]
Calculated: -
Dyn. index: -
Unit group: -
Scaling: -
Max
830 [V]
List Manual (LH8), 02/2015, 6RX1800-0ED76
Access level: 3
Func. diagram: 6970
Unit selection: -
Expert list: 1
Factory setting
- [%]
Access level: 3
Func. diagram: 6970
Unit selection: -
Expert list: 1
Factory setting
- [%]
Access level: 3
Func. diagram: 6970
Unit selection: -
Expert list: 1
Factory setting
1600 [V]
Access level: 3
Func. diagram: 6970
Unit selection: -
Expert list: 1
Factory setting
145 [V]
SINAMICS DCM