Siemens SINAMICS S120 Function Manual page 91

Acknowledging the safety faults
General
NOTICE
The 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 as soon as the
system has been rebooted.
Acknowledgement via TM54F
Parameter p10006 "SI acknowledgement internal event input terminal" allows faults to be
acknowledged in the safety drives and in TM54F itself.
The "safe fault acknowledgement" mechanism functions as follows:
The safe input F-DI on the TM54F parameterized with the function p10006 "Safety Integrated
acknowledgement internal event input terminal" is energized. This allows faults that occurred
in the firmware installed in the Control Unit or Motor Module to be acknowledged by means
of a safe input signal. The falling edge at this input resets the status "Internal Event" in the
drives and, if used, in the TM54F.
To prevent safety faults from being acknowledged unintentionally or incorrectly, the signal at
the TM54F F DI terminal, which was parameterized for acknowledgement purposes, must be
at level "0" in the idle state. To trigger the acknowledgement (falling edge at F DI), the signal
must first be set to "1" and then back to "0". If the required idle state is not reached, an alarm
is output.
After "safe fault acknowledgement", an acknowledgement must be issued on the Control
Unit in order to:
● Delete the TM54F faults from the fault buffer
● Reset the pending, red "Ready" LED on the TM54F
Acknowledgement via PROFIsafe
The higher-level controller sets the signal "Internal Event ACK" via the PROFIsafe telegram
(STW bit 7) separately for each drive object. A falling edge in this signal sets the status
"Internal Event" in the relevant drive, which acknowledges the fault.
Faults in the drive objects (DOs) cannot be acknowledged by the higher-level controller in
the line-up but must instead be acknowledged separately for each individual drive object.
Description of faults and alarms
Note
The faults and alarms for SINAMICS Safety Integrated are described in the following
documentation:
Reference: /LH1/ SINAMICS S120/S150 List Manual
Safety Integrated
Function Manual, (FHS), 11/2009, 6SL3097-4AR00-0BP0
Safety Integrated Extended Functions
5.10 Safety faults
91