Siemens SINAMICS G120D Operating Instructions Manual page 245

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
Figure 7-51
After an OFF2 command, the inverter issues the signal to immediately close the motor
holding brake, irrespective of the motor speed.
Commissioning a motor holding brake
Danger to life due to falling loads
For applications such as lifting equipment, cranes or elevators, there is a danger to life if
the "Motor holding brake" function is incorrectly set.
• When commissioning the "Motor holding brake" function, secure any dangerous loads,
Precondition
The motor holding brake is connected to the inverter.
Converter with control units CU250D-2
Operating Instructions, 04/2015, FW V4.7.3, A5E34261542B AB
Controlling the motor holding brake after OFF2
DANGER
e.g. by applying the following measures:
– Lower the load down to the floor
– Cordon off the hazardous area so that nobody can enter it
Advanced commissioning
7.8 Application-specific functions
245