Function Of The F-Do - Siemens Sinamics S120 Function Manual

Cont rol of the safety functions
5.6 Control of the Extended Functions via F-DI (for CU310-2)
5.6.2

Function of the F-DO

Description
The fail-safe digital output (F-DO) comprises 2 digital outputs plus one digital input that
checks the switching state for forced dormant error detection (test stop). The 1st digital
output switches 24 V DC, and the 2nd switches M of the X130 (CU310-2) voltage supply.
The status of each F-DO can be read at parameter r10052. The status of the associated
DI22 can be read using parameter r0722.22.
The actuator connected to the F-DO can also be tested under specific conditions as part of
forced dormant error detection (test stop). See Section "Forced dormant error detection (test
stop) of the CU310-2 (Page 288)".
Table 5- 16
Mo dule
CU310-2
Signal sources for the F-DO
For the CU310-2, the following signals are available for interconnecting (p10042, ..., p10045)
on the F-DO:
● STO active
● SS1 active
● SS2 active
● SOS active
● SLS active
● SSM feedback active
● Safe State
● SOS selected
● Internal event
● Active SLS level bit 0
● Active SLS level bit 1
● SDI positive active
● SDI negative active
● SLP active
● Active SLP area
For the F-DO, up to 6 signals can be interconnected via indexes (p10042[0...5]; these are
then output AND'ed.
202
Overview of the fail-safe outputs in the SINAMICS S120/S150 List Manual:
Fu n ction diagram
2873
Ou tputs
F-DO 0
Function Manual, (FHS), 07/2016, 6SL3097-4AR00-0BP6
Associated checking
i n puts
DI 22
Safety Integrated