Siemens SINAMICS S120 Function Manual page 120

Description of Safety Integrated functions
4.2 Safety Integrated Extended Functions
Configuring the limits
● The speed limits for Safely-Limited Speed without encoder are configured in exactly the
same way as described for Safely-Limited Speed with encoder.
● Only STOP A and STOP B may be configured as stop responses for "Safely-Limited
Speed" (SLS) without encoder.
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 •
118
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 se-
lection/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, 12/2018, 6SL3097-5AR00-0BP1
Safety Integrated