Case 1: Switching on the motor after a discrepancy
Procedure
To switch the motor on again, proceed as follows:
1. Remove the discrepancy.
2. Acknowledge the internal event.
Selected setting How can the internal event be acknowledged?
F-DI PROFIsafe Alternative
Basic functions via on‐
board terminals
Select and deselect
STO (F‑DI =
1 → 0 → 1)
--- Switch off the
power supply volt‐
age and switch
on again.
Basic functions via
PROFIsafe and on‐
board terminals
Select and deselect
STO (F‑DI =
1 → 0 → 1)
Select and deselect STO
(PROFIsafe control word 1,
bit 0 = 1 → 0 → 1)
or
Select and deselect SS1 (PRO‐
FIsafe control word 1, bit 1
= 1 → 0 → 1)
or
Fail-safe acknowledgment
(PROFIsafe control word 1,
bit 7 = 0 → 1 → 0)
Switch off the
power supply volt‐
age and switch
on again.
Extended Functions
via PROFIsafe and Ba‐
sic Functions via on‐
board terminals
Select and deselect
STO (F‑DI =
1 → 0 → 1)
Select and deselect STO
(PROFIsafe control word 1,
bit 0 = 1 → 0 → 1)
or
Select and deselect SS1 (PRO‐
FIsafe control word 1, bit 1
= 1 → 0 → 1)
or
Fail-safe acknowledgment
(PROFIsafe control word 1,
bit 7 = 0 → 1 → 0)
Switch off the
power supply volt‐
age and switch
on again.
3. Acknowledge the inverter with the "standard" acknowledge signal.
4. Issue an OFF1 command (ON/OFF1 = 0).
5. Switch on the motor (ON/OFF1 = 1).
You have acknowledged the discrepancy message, and switched on the motor again.
Operation
6.3 Safe Torque Off (STO)
Safety Integrated - SINAMICS G110M, G120, G120C, G120D and SIMATIC ET 200pro FC-2
228 Function Manual, 01/2017, FW V4.7 SP6, A5E34261271B AD
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