Siemens SINAMICS G120 Operating Instructions Manual page 223

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.
After the OFF2 command
Figure 6-26
After the OFF2 command, the inverter issues the signal to immediately close the motor holding
brake, irrespective of the motor speed.
Commissioning a motor holding brake
Precondition
The motor holding brake is connected to the inverter.
Load can fall if the "Motor holding brake" function is incorrectly set
For applications with a suspended load, such as cranes and elevators, there is a danger to
life if the "Motor holding brake" function is not completely set or is incorrectly set.
● When commissioning the "Motor holding brake" function, secure any suspended loads,
● Set the "Motor holding brake" function according to the following description.
● After commissioning, check that the motor holding brake and the motor control function
● For applications involving suspended loads, we recommend that you use vector control
Converter with the CU250S-2 Control Units
Operating Instructions, 04/2018, FW V4.7 SP10, A5E31759476B AG
Controlling the motor holding brake after OFF2
WARNING
e.g. by applying the following measures:
– Lower the load down to the floor.
– Secure the dangerous area so that nobody can inadvertently enter it.
reliably.
together with an encoder.
Advanced commissioning
6.13 Motor holding brake
221