Siemens SINAMICS G120 List Manual page 1050

4 Faults and alarms
4.2 List of faults and alarms
Remedy: Set the fail-safe digital input (F-DI) to a logical 0 signal (p10006).
Note:
F-DI: Fail-safe Digital Input
A01669 (F, N) SI Motion: Unfavorable combination of motor and power unit
Message class: Error in the parameterization / configuration / commissioning procedure (18)
Reaction: NONE
Acknowledge: NONE
Cause: The combination of motor and power unit used is not suitable for using safe motion monitoring functions without an
encoder.
The ratio between the power unit rated current (r0207[0]) and rated motor current (p0305) is greater than 5.
Alarm value (r2124, interpret decimal):
Number of the motor data set, which caused the fault.
Notice:
If this alarm is not observed, then message C01711 or C30711 – with the value 1041 ... 1044 – can sporadically
occur.
Remedy: Use a suitable power unit with a lower power rating or a motor with a higher power rating.
A01678 (F) SI: Test stop for STO via terminals required at the PM
Message class: Safety monitoring channel has identified an error (10)
Reaction: NONE
Acknowledge: NONE
Cause: The time (p9661) set to monitor the forced checking procedure (test stop) for the "STO via the terminals at the Power
Module" function has been exceeded. A new forced checking procedure is required.
After the next time the "STO via terminals at the Power Module" function is deselected, the message is withdrawn
and the monitoring time is reset.
Note:
- this message does not result in a safety stop response.
- the test must be performed within a defined, maximum time interval (p9661, maximum of 9000 hours) in order to
comply with the requirements as laid down in the standards for timely fault detection and the conditions to calculate
the failure rates of safety functions (PFH value). Operation beyond this maximum time period is permissible if it can
be ensured that the forced checking procedure is performed before persons enter the hazardous area and who are
depending on the safety functions correctly functioning.
See also: p9661 (SI forced checking procedure STO via PM terminals time), r9662 (SI forced checking procedure
STO via PM terminals remaining time)
Remedy: Select the "STO via terminals at the Power Module" function and then deselect again.
Note:
PM: Power Module
SI: Safety Integrated
STO: Safe Torque Off
F01680 SI Motion P1 (CU): Checksum error safety monitoring functions
Message class: Safety monitoring channel has identified an error (10)
Reaction: OFF2
Acknowledge: IMMEDIATELY (POWER ON)
Cause: The actual checksum calculated by the drive and entered in r9728 via the safety-relevant parameters does not match
the reference checksum saved in p9729 at the last machine acceptance.
Safety-relevant parameters have been changed or a fault is present.
Note:
This fault results in a STOP A that can be acknowledged.
Fault value (r0949, interpret decimal):
0: Checksum error for SI parameters for motion monitoring.
1: Checksum error for SI parameters for actual values.
2: Checksum error for SI parameters for component assignment.
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SINAMICS G120 CU250S-2 Control Units
List Manual, 09/2017, A5E33842890