Siemens SINAMICS G120C DP User Manual

The following occurs after an OFF1 or OFF3 command:
1. The motor brakes along the OFF1 or OFF3 deceleration ramp to starting speed p1234.
2. The converter de-energizes the motor for the motor de-excitation time p0347 in order to
demagnetize the motor.
3. The converter activates the DC braking.
4. After "DC braking duration" p1233 expires, the converter de-energizes the motor.
If the OFF1 command is deactivated before "DC braking duration" p1233 expires, the
converter terminates the DC braking and switches to normal operation.
DC braking as reaction to a fault
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Figure8-64 DC braking as a fault reaction
Set p2101[x]=6 and p2100[x] to the corresponding fault code.
If you have de󹪝ned the DC braking as a reaction to a fault, then the following will occur:
1. The converter brakes the motor with OFF1.
2. The converter de-energizes the motor for the motor de-excitation time p0347 in order to
demagnetize the motor.
3. The converter activates the DC braking.
4. After "DC braking duration" p1233 expires, the converter de-energizes the motor.
Parameter
Settings for DC braking
Parameter Description Factory setting
p0347[M] Motor de-excitation time 0s
p1230[C] BI: DC braking activation 0
p1231[M] Con󹪝guring DC braking 0
p1232[M] DC braking, braking current 0Arms
p1233[M] DC braking duration 1s
p1234[M] Speed at the start of DC braking 210000rpm
r1239[8…13] CO/BO: DC braking status word -
Advanced commissioning
8.21Electrically braking the motor
SINAMICS G120C Converters
Operating Instructions, 02/2023, FW V4.7 SP14, A5E34263257B AK 329

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