Siemens SINAMICS G120C User Manual

Function description
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Figure8-25 Motor holding brake function
After the ON command:
1. The converter switches on the motor with the ON command.
2. At the end of the "motor excitation build-up time" (p0346), the converter issues the
command to open the brake.
3. The converter keeps the motor at a standstill until the "motor holding brake opening time"
p1216 has ended.
The motor holding brake must be opened within time p1216.
4. The converter accelerates the motor to the speed setpoint.
After the OFF1 or OFF3 command:
1. The converter brakes the motor down to a standstill using the OFF1 or OFF3 command.
2. If the actual speed is less than 20 rpm, then the converter issues the command to close the
brake. The motor comes to a standstill but remains switched on.
3. After the "motor holding brake closing time" p1217, the converter switches o󹪜 the motor.
The motor holding brake must close within the time p1217.
Advanced commissioning
8.13Motor holding brake
SINAMICS G120C Converters
246 Operating Instructions, 02/2023, FW V4.7 SP14, A5E34263257B AK

Siemens SINAMICS G120C Specifications

General

Communication Interfaces	PROFINET, PROFIBUS, USS, Modbus RTU
Protection Class	IP20
Ambient Temperature	-10°C to +50°C
Storage Temperature	-40°C to +70°C
Power Range	0.55 kW to 132 kW
Voltage Range	380 V to 480 V
Output Voltage	0 V to Supply Voltage
Frequency Range	0 Hz to rated output frequency
Control Modes	Vector control with encoder
Protection	Overload, overvoltage, undervoltage, short circuit, ground fault
Relative Humidity	5% to 95%, non-condensing
Altitude	Up to 2000 m without derating