Switching Off The Motor When Sls Is Active - Siemens SINAMICS G120 Function Manual

2.7.5

Switching off the motor when SLS is active

If you switch the motor off with the OFF1 or OFF3 command while the SLS safety function is
active, for example when limit switches are reached, the inverter brakes the motor with the
OFF1 or OFF3 ramp-down time. The inverter monitors the motor speed to determine
whether the permissible limit is overshot during the braking operation as well.
When the standstill detection threshold is reached, the inverter cuts off the motor torque. The
motor then coasts to a standstill.
Figure 2-14
Safety Integrated Function Manual, SINAMICS G120
Function Manual, 07/2010, FW 4.3.2, A5E03052391B AA
OFF1 command when the SLS safety function is active
Description
2.7 Interrupting safety functions
37