Siemens SINAMICS G120 List Manual page 880

4 Faults and alarms
4.2 List of faults and alarms
Remedy: - check the traversing/motion program in the control.
- check the limits for "SLS" function and if required, adapt (p9331).
Note:
This message can be acknowledged using "Acknowledge internal event".
SLS: Safely Limited Speed
See also: p9331 (SI Motion SLS limit values (processor 2)), p9363 (SI Motion SLS stop response (processor 2))
C30716 SI Motion P2: Tolerance for safe motion direction exceeded
Message class: Safety monitoring channel has identified an error (10)
Reaction: NONE
Acknowledge: IMMEDIATELY (POWER ON)
Cause: The tolerance for the "safe motion direction" function was exceeded. The drive is stopped as a result of the
configured stop response (p9366).
Message value (r2124, interpret decimal):
0: Tolerance for the "safe motion direction positive" function exceeded.
1: Tolerance for the "safe motion direction negative" function exceeded.
Remedy: - check the traversing/motion program in the control.
- check the tolerance for "SDI" function and if required, adapt (p9364).
This message can be acknowledged as follows:
- Deselect the "SDI" function and select again.
- carry out safe acknowledgment via "Acknowledgment internal event".
Note:
SDI: Safe Direction (safe motion direction)
SI: Safety Integrated
See also: p9364 (SI Motion SDI tolerance (processor 2)), p9365 (SI Motion SDI delay time (processor 2)), p9366 (SI
Motion SDI stop response (processor 2))
C30770 SI Motion P2: Discrepancy error affecting the failsafe inputs
Message class: Safety monitoring channel has identified an error (10)
Reaction: NONE
Acknowledge: IMMEDIATELY (POWER ON)
Cause: The fail-safe digital inputs (F-DI) show a different state longer than that parameterized in p10002 / p10102.
Fault value (r0949, interpret binary):
Bit 0: Discrepancy error for F-DI 0
Bit 1: Discrepancy error for F-DI 1
...
Note:
If several discrepancy errors occur consecutively, then this message is only signaled for the first error that occurs.
Remedy: - check the wiring of the F-DI (contact problems).
Note:
This message can be acknowledged via F-DI or PROFIsafe.
Discrepancy errors of an F-DI can only be acknowledged if safe acknowledgment was carried out once after the
cause of the error was resolved (p10106, acknowledgment via PROFIsafe, extended message acknowledgment). As
long as safety acknowledgment was not carried out, the corresponding F-DI stays in the safe state internally.
When the "Extended message acknowledgment" function (p9307.0) is active, the following applies:
If the F-DI assigned for STO or SS1 is in a fail-safe state due to a discrepancy error, then when deselecting via this F-
DI, safe acknowledgment can no longer be executed.
For cyclic switching operations at the F-DI, it may be necessary to adapt the discrepancy time to the switching
frequency.
If the period of a cyclic switching pulse corresponds to twice the value of p10102, then the following formulas should
be checked:
- p10102 < (tp / 2) - td (discrepancy time must be less than half the period minus the actual discrepancy time)
- p10102 >= 12 ms (discrepancy time must be no less than 12 ms)
- p10102 > td (discrepancy time must be greater than the switch discrepancy time that may actually occur)
td = possible actual discrepancy time (in ms) that can occur with a switching operation. It must be at least 12 ms.
tp = period for a switching operation in ms.
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SINAMICS G120 Control Units CU240B-2/CU240E-2
List Manual (LH11), 01/2016, A5E33839529