Siemens SINAMICS G120 Operating Instructions Manual page 217

You have to supply the following equipment:
● A motor holding brake suitable for the attached motor and the purposes of the
● A power supply for the motor holding brake.
● A relay to allow the digital output to enable or disable the motor holding brake.
Principle of operation after OFF1 and OFF3 command
Figure 9-27
SINAMICS G120C frequency converter
Operating Instructions, 03/2012, FW V4.5, A5E02999804B AB
application.
Figure 9-26 Simplified diagram of motor holding brake connected to DO 0 of the converter
Controlling the motor holding brake when the motor is switched on and off
9.9 Application-specific functions
Functions
215