Siemens SINAMICS G120 List Manual page 1060

4 Faults and alarms
4.2 List of faults and alarms
When the "Extended message acknowledgment" function (p9507.0) 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 p10002, then the following formulas should
be checked:
- p10002 < (tp / 2) - td (discrepancy time must be less than half the period minus the actual discrepancy time)
- p10002 >= 12 ms (discrepancy time must be no less than 12 ms)
- p10002 > td (discrepancy time must be greater than the switch discrepancy time which may actually apply)
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.
When debounce p10017 is active, the discrepancy time is directly specified by the debounce time.
If the period of a cyclic switching pulse corresponds to twice the debounce time, then the following formulas should
be checked.
- p10002 < p10017 + 1 ms - td
- p10002 > td
- p10002 >= 12 ms
Example:
For a 110 ms switching frequency and p10017 = 0, the maximum discrepancy time that can be set is as follows:
p10002 <= (110/2 ms) - 12 ms = 43 ms
Rounded off, p10002 <= 36 ms is obtained (as the discrepancy time is rounded off as a multiple of 12 ms).
Note:
F-DI: Fail-safe Digital Input
A01772 SI Motion P1 (CU): Test stop for fail-safe digital outputs running
Message class: Safety monitoring channel has identified an error (10)
Reaction: NONE
Acknowledge: NONE
Cause: The forced checking procedure (test stop) for the fail-safe digital inputs is currently in progress.
Remedy: The alarm is automatically withdraw after successfully ending or canceling (when a fault condition occurs) the test
stop.
Note:
F-DO: Fail-safe Digital Output
F01773 SI Motion P1 (CU): Test stop fail-safe digital output error
Message class: Safety monitoring channel has identified an error (10)
Reaction: NONE
Acknowledge: IMMEDIATELY (POWER ON)
Cause: A fault has occurred on processor 1 during the forced checking procedure (test stop) of the fail-safe digital output.
Fault value (r0949, interpret hexadecimal):
RRRVWXYZ hex:
R: Reserved.
V: Actual state of the DO channel concerned (see X) on processor 1 (corresponds to the states read back from the
hardware, bit 0 = DO 0, bit 1 = DO 1, etc.).
W: Required state of the DO channel concerned (see X, bit 0 = DO 0, bit 1 = DO 1, etc.).
X: DO channels involved, which indicate an error (bit 0 = DO 0, bit 1 = DO 1, etc.).
Y: Reason for the test stop fault.
Z: State of the test stop in which the fault has occurred.
Y: Reason for the test stop fault
Y = 1: MM side in incorrect test stop state (internal fault).
Y = 2: Expected states of the DOs were not fulfilled (CU240D-2: readback via DI 5 / CU250S-2 readback via DI 6).
Y = 3: Incorrect timer state on processor 1 (internal fault)
Y = 4: Expected states of the diag DOs were not fulfilled (CU240D-2: internal readback on processor 2 channel /
CU250S-2 readback via DI 6).
Y = 5: Expected states of the second diag DOs were not fulfilled (CU240D-2: internal readback on processor 1).
1060
SINAMICS G120 CU250S-2 Control Units
List Manual, 09/2017, A5E33842890