Safe Stop 1 (Ss1); Overview - Siemens Sinamics G120 Function Manual

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
Select and dese‐
lect SS1
Discrepancy in
the input signal
Limit value viola‐
tion
Table 6-4
SS1 is not active If SS1 is not active, then there are no restrictions for switching on and switching off
SS1 is active
Safety Integrated - SINAMICS G110M, G120, G120C, G120D and SIMATIC ET 200pro FC-2
Function Manual, 01/2017, FW V4.7 SP6, A5E34261271B AD
Response of the SS1 function when the motor is switched on (ON/OFF1 = 1)
Selecting and deselecting SS1 when the motor is switched on (Page 238)
The fail-safe digital input to select SS1 identifies an error.
Response to a discrepancy when SS1 is active (Page 246)
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.
Switching the motor on and off when SS1 is active or not active
Switching on the motor (ON/OFF1 =
0 → 1)
the motor.
The active SS1 function prevents the
motor from being switched on.
6.5 Safe Stop 1 (SS1)
Switching off the motor (ON/OFF1,
OFF2 or OFF3 = 1 → 0)
The drive response depends on the sig‐
nal that you use to switch off the motor.
Switching off the motor when SS1
is active (Page 244)
Operation
237