Siemens Sinamics S120 Function Manual page 118

Description of Safety Integrated functions
4.2 Safety Integrated Extended Functions
2. Case
3. Case
4. Case
When acknowledging SDI with STOP C, you must maintain the following sequence:
1. Correct the incorrect setpoint input.
2. Deselect SDI.
While the safety STOP is active, this ensures that the motor cannot travel in the direction
that has not been enabled while the SDI function is deselected.
3. Select SDI again.
The SDI limits are then set again.
4. Cancel the safety STOP as a result of "safe acknowledgment".
118
Situation
•
Traversing to standstill with SDI selected
•
Initiate OFF1
•
Pulses are canceled; internal selection STO becomes active
•
Select STO
•
Deselect STO
•
STO activated internally via pulse suppression: This activation must be undone by se-
lecting/deselecting 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 SDI selected
•
Initiate OFF1
•
Pulses are canceled; internal selection STO becomes active
•
Deselect SDI
•
STO activated internally via pulse suppression: This activation must be undone by de-
selecting SDI.
Select SDI
•
The drive enable must be issued within 5 seconds via a positive edge at OFF1, 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