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Figure8-26 Controlling the motor holding brake after OFF2
After the OFF2 command, the converter issues the signal to immediately close the motor
holding brake, irrespective of the motor speed.
Commissioning a motor holding brake
WARNING
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, e.g.
by applying the following measures:
– Lower the load down to the oor.
– Secure the dangerous area so that nobody can inadvertently enter it.
• Set the "Motor holding brake" function according to the following description.
• After commissioning, check that the motor holding brake and the motor control function
reliably.
• For applications involving suspended loads, we recommend that you use vector control
together with an encoder.
Requirement
• The motor holding brake is connected to the converter.
• You have assigned the "Controlling the motor holding brake" function to a digital output:
– DO0: p0730 = 52.12
– DO1: p0731 = 52.12
Advanced commissioning
8.13Motor holding brake
SINAMICS G120C Converters
Operating Instructions, 02/2023, FW V4.7 SP14, A5E34263257B AK 247
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