Siemens Sinamics S120 Function Manual page 104

Description of Safety Integrated functions
4.2 Safety Integrated Extended Functions
Restart after OFF2/STO
If the drive has been switched off via STO, the following steps need to be carried out before
a restart can be performed:
1st
case
2nd
case
3rd
case
4th
case
104
State after switching on
•
SLS selected
•
STO selected
•
Pulse suppression active
•
Deselect STO
•
The drive enable must be issued within 5 seconds via a positive edge at OFF1, other-
•
wise STO is reactivated.
Situation
•
Traversing to standstill with SLS selected
•
OFF1 is initiated, pulse cancellation becomes active (internal selection
•
STO)
Select STO
•
Deselect STO
•
STO activated internally via pulse suppression: This activation must be undone by selec-
tion/deselection.
The drive enable must be issued within 5 seconds via a positive edge at OFF1, other-
•
wise STO is reactivated.
Situation
•
Traversing to standstill with SLS selected
•
OFF1 is initiated, pulse cancellation becomes active (internal selection
•
STO)
Deselect SLS
•
STO activated internally via pulse suppression: This activation must be undone by se-
lecting/deselecting SLS.
Select SLS
•
The drive enable must be issued with a positive edge at OFF1 within 5 seconds, other-
wise STO is reactivated.
Situation
•
All Safety Integrated functions are deselected.
•
After this the drive enable must be given by a positive edge at OFF1.
•
In this case, the motor is not started safely.
•
Function Manual, (FHS), 07/2016, 6SL3097-4AR00-0BP6
Safety Integrated