4.4 Responses to safety faults
4.4.1 Stop responses
Overview
If Basic Function faults occur, the following stop responses can be triggered:
● STOP A
● STOP F
Internal event
An "internal event" is a major fault that causes the converter to bring the motor to a standstill
as quickly as possible by triggering a STOP reaction.
An "internal event" can be triggered, for example, if the converter detects a fault in the
monitoring channels during a data cross-check (e.g. F01611 "Defect in a monitoring channel").
An "internal event" can only be acknowledged using a fail-safe signal.
STOP A
For a STOP A, the converter safely switches off the torque of the connected motor immediately.
STOP A corresponds to STO.
STOP F
STOP F is triggered when a fault in the data cross-check of the monitoring channels is detected.
Consequently, STOP A is triggered and fault F01600 issued.
The transition time from STOP F to STOP A can be selected in p9658.
Note
The selected transition time from STOP F to STOP A (p9658) must be greater than or equal
to the delay time (p9652).
If a safety function is active, the following happens after a STOP F:
● Fault F01611 initiates a STOP A after the transition time.
● The message C01711 "Defect in a monitoring channel" triggers a STOP A when STO is
active.
Safety functions integrated in the drive
4.4 Responses to safety faults
SINAMICS S210 servo drive system
Operating Instructions, 12/2017, A5E41702836B AA 69
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