Siemens CU240B-2 Function Manual

6.6.6 Response to a discrepancy when SLS is active
Drive response
The inverter responds with the active SLS safety function to a discrepancy at the fail-safe digital
input.
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Figure 6-33 Behavior of the inverter for discrepancy of the input signal for SLS
The inverter does not set the error bit of the safety functions (= internal event).
After the tolerance time has expired, the inverter signals the discrepancy (Alarm C01770 or
C30770). The SLS function remains active, and the motor remains switched on.
Independent of the voltage levels available, the inverter sets the evaluation of the discrepant
F-DI into the safe state (= zero) until you acknowledge the inverter using a fail-safe signal or
you switch off the power supply voltage and switch it on again.
Inverter signal Parameters Included in the PROFI‐
safe telegram
Can be interconnec‐
ted with
F-DI F-DO
SLS active r9722.4 ✓ --- ✓
Deselect SLS r9720.4 ✓ ✓ ---
"Standard" acknowledgment p2103 --- --- ---
Operation
6.6 Safely Limited Speed (SLS)
Safety Integrated - SINAMICS G110M, G120, G120C, G120D and SIMATIC ET 200pro FC-2
268 Function Manual, 01/2017, FW V4.7 SP6, A5E34261271B AD

Siemens CU240B-2 Specifications

General

Brand	Siemens
Model	CU240B-2
Category	Inverter
Language	English