Siemens SINAMICS G120C DP User Manual

Procedure
1. Set p1215 = 3.
The "Motor holding brake" function is enabled.
2. Check the magnetizing time p0346.
The magnetizing time must be greater than zero. The converter assigns the magnetizing time
when it is being commissioned.
3. Find out the mechanical opening and closing times from the technical data of the motor
holding brake.
– Depending on the brake size, brake opening times lie between 25 ms and 500 ms.
– Depending on the brake size, brake closing times lie between 15 ms and 300 ms.
4. Set the following parameters in the converter suitably for the mechanical opening and
closing times of the motor holding brake:
– p1216 > mechanical opening time of the motor holding brake
– p1217 > mechanical closing time of the motor holding brake
5. Switch on the motor.
6. Check the acceleration behavior of the drive immediately after the motor has been switched
on:
– If the motor holding brake opens too late, the converter will accelerate the motor
suddenly against the closed motor holding brake.
Set p1216 larger.
– If the motor waits too long before accelerating after the motor holding brake has opened,
reduce p1216.
For applications involving a pulling load, e.g. lifting gear/crane, if p1216 is too long, then
the load can brie󹪞y sag/sink after the motor holding brake is opened. If you reduce p1216,
then the amount that the load sags/sinks is reduced.
7. If the load sags after switching on the motor, then you must increase the motor torque when
opening the motor holding brake. Depending on the control mode, you must set di󹪜erent
parameters:
– U/f control (p1300 = 0 to 3):
Increase p1310 in small steps.
Increase p1351 in small steps.
– Vector control (p1300 ≥ 20):
Increase p1475 in small steps.
8. Switch o󹪜 the motor.
9. Check the behavior of the drive immediately after the motor has been switched o󹪜:
– If the motor holding brake closes too late, the load brie󹪞y sags before the motor holding
brake closes.
Set a larger value for p1217.
– If the motor waits too long before switching o󹪜 after the motor holding brake has closed,
reduce p1217.
You have commissioned the "Motor holding brake" function.
❒
Advanced commissioning
8.13Motor holding brake
SINAMICS G120C Converters
248 Operating Instructions, 02/2023, FW V4.7 SP14, A5E34263257B AK

Siemens SINAMICS G120C DP Specifications

General

Protection Rating	IP20
Frequency Range	0 to 650 Hz
Control Modes	V/f, sensorless vector control
Communication Interfaces	PROFIBUS DP
Ambient Temperature	-10 to +50 °C (without derating), -10 to +60 °C (with derating)
Overload Capacity	150 % rated current for 60 s, 200 % rated current for 3 s
Storage Temperature	-40 to +70 °C
Relative Humidity	5% to 95% (non-condensing)
Voltage Range	200 V to 240 V (±10%), 380 V to 480 V (±10%)
Output Voltage	0 V to Supply Voltage