Siemens SINAMICS G120 Operating Instructions Manual page 294

Advanced commissioning
6.7 Application-specific functions
Function after an OFF1 or OFF3 command:
1. The inverter brakes the motor down to a standstill and switches it off using the OFF1 or
OFF3 command.
2. When braking, the inverter compares the speed setpoint and the actual speed with the
"standstill detection speed threshold" p1226:
– Speed setpoint < p1226: The "standstill detection monitoring time" p1227 starts
– Current speed < p1226: The "pulse cancellation deceleration time" p1228 starts
3. When the first of the two times (p1227 or p1228) has elapsed, the inverter issues the
command to close the brake.
4. After the "motor holding brake closing time" p1217, the inverter switches off the motor.
The motor holding brake must close within the time p1217.
Function after an OFF2 command
Image 6-48
After an OFF2 command, the inverter issues the signal to immediately close the motor
holding brake, irrespective of the motor speed.
294
Controlling the motor holding brake after OFF2
Converter with the CU240B-2 and CU240E-2 Control Units
Operating Instructions, 01/2016, FW V4.7 SP6, A5E34259001B AC