Inverter signal Parameters Included in the PROFI‐
safe telegram
Can be interconnec‐
ted with
F-DI F-DO
Fail-safe acknowledgment r9720.7 ✓ ✓ ---
ON/OFF1 r0054.0 --- --- ---
Deselecting SLS after a discrepancy
Procedure
To deselect SLS, proceed as follows:
1. Remove the discrepancy.
2. Acknowledge the discrepancy message with the fail-safe acknowledge signal via a fail-safe
digital input: F‑DI = 0 → 1 → 0.
Alternatively, you can acknowledge the message in one of the following ways. However,
the drive stops in these cases:
– Select the STO function and then deselect again: F‑DI = 1 → 0 → 1.
– Select the SS1 function and then deselect again: F‑DI = 1 → 0 → 1.
– Switch off the inverter power supply voltage and on again.
3. Acknowledge the inverter with the "standard" acknowledge signal.
You have acknowledged the discrepancy message and deselected SLS.
Operation
6.6 Safely Limited Speed (SLS)
Safety Integrated - SINAMICS G110M, G120, G120C, G120D and SIMATIC ET 200pro FC-2
Function Manual, 01/2017, FW V4.7 SP6, A5E34261271B AD 269
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