Technical data

Safety Integrated Functions
8.4 Safety Integrated Basic Functions
Function Manual
Function Manual, 06/2012, 6SL3097-4AB10-0BP4
363
Acknowledging the safety faults
Faults associated with Safety Integrated Basic Functions must be acknowledged as follows:
1. Remove the cause of the fault.
2. Deselect "Safe Torque Off" (STO).
3. Acknowledge the fault.
If safety commissioning mode is exited when the safety functions are switched off (p0010 ≠
95 when p9601 = p9801 = 0), all the safety faults can be acknowledged.
Once safety commissioning mode has been selected again (p0010 = 95), all the faults that
were previously present reappear.
NOTICE
Safety faults can also be acknowledged (as with all other faults) by switching the drive unit
off and then on again (POWER ON).
If this action has not eliminated the fault cause, the fault is displayed again immediately
after power up.
Acknowledgment via PROFIsafe
The higher-level controller sets the signal "Internal Event ACK" via the PROFIsafe telegram
(STW bit 7). A falling edge in this signal resets the status "Internal Event" and so
acknowledges the fault.
Description of faults and alarms
Note
The faults and alarms for SINAMICS Safety Integrated are described in the following
documentation:
References: SINAMICS S110 List Manual
8.4.5 Forced checking procedure
Forced dormant error detection or test of the switch-off signal paths for Safety Integrated Basic
Functions
The forced dormant error detection function at the switch-off signal paths is used to detect
software/hardware faults at both monitoring channels in time and is automated by means of
activation/deactivation of the "Safe Torque Off" function.
To fulfill the requirements of ISO 13849-1 regarding timely error detection, the two switch-off
signal paths must be tested at least once within a defined time to ensure that they are
functioning properly. This functionality must be implemented by means of forced dormant
error detection function, triggered either in manual mode or by the automated process.