Flow Diagram Ss1 With Off3 (Ss1-T); Shutting Down The Motor With Ss1 Active - Siemens SINAMICS S210 Operating Instructions Manual

Safety functions integrated in the drive
4.2 Basic Functions

Flow diagram SS1 with OFF3 (SS1-t)

Shutting down the motor with SS1 active

When SS1 is active, the OFF2 command stops the energy supply to the motor, even before
the delay time for SS1 has elapsed. The motor coasts down to a standstill.
Proceed as follows in order to switch on the motor again:
1. Deselect SS1. This deactivates SS1 and STO.
2. Deselect the OFF2 command. The converter goes into the "Ready for switching on" state.
3. Switch the motor off and back on to send an ON signal to the motor.
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SS1 is selected during operation (selection via the control bit of the selected PROFIsafe telegram
or via F-DI).
The converter signals the status "SS1 active" via the status bit of the PROFIsafe telegram to the
PLC for further processing.
After the response time, the converter initiates braking along the OFF3 ramp. The SS1 delay time
is started at the same time.
The converter brakes the motor along the OFF3 ramp for the duration of the delay time.
STO is initiated automatically after the SS1 delay time expires (p9652).
The motor coasts down to a standstill. STO safely prevents an unwanted restart of the motor.
When SS1 is deselected (via PROFIsafe or F-DI), STO and SS1 are deactivated and the converter
goes into the "Ready for switching on" state.
The converter switches the motor on again with a positive signal edge at ON/OFF.
SINAMICS S210 servo drive system
Operating Instructions, 12/2017, A5E41702836B AA