6.5
Safe Stop 1 (SS1)
6.5.1
Overview
What can you find in this Chapter?
The relevant operating cases for the SS1 function are described in this chapter.
Table 6-3
Response of the SS1 function when the motor is switched on (ON/OFF1 = 1)
Select and dese‐
lect SS1
Selecting and deselecting SS1 when the motor is switched on (Page 238)
Discrepancy in
the input signal
The fail-safe digital input to select SS1 identifies an error.
Response to a discrepancy when SS1 is active (Page 246)
Limit value viola‐
tion
The speed of the motor violates the SS1 monitoring that has been set.
Limit value violation when SS1 is active (Page 251)
The basic SS1 function does not monitor the motor speed. The limit value violation
is not relevant in this particular case.
Table 6-4
Switching the motor on and off when SS1 is active or not active
Switching on the motor (ON/OFF1 =
0 → 1)
Switching off the motor (ON/OFF1,
OFF2 or OFF3 = 1 → 0)
SS1 is not active If SS1 is not active, then there are no restrictions for switching on and switching off
the motor.
SS1 is active
The active SS1 function prevents the
motor from being switched on.
The drive response depends on the sig‐
nal that you use to switch off the motor.
Switching off the motor when SS1
Operation
6.5 Safe Stop 1 (SS1)
Safety Integrated - SINAMICS G110M, G120, G120C, G120D and SIMATIC ET 200pro FC-2
Function Manual, 01/2017, FW V4.7 SP6, A5E34261271B AD
237
