Siemens SINAMICS G120 List Manual page 1156

4 Faults and alarms
4.2 List of faults and alarms
C30706 SI Motion P2: SAM/SBR limit exceeded
Message class: Safety monitoring channel has identified an error (10)
Reaction: NONE
Acknowledge: IMMEDIATELY (POWER ON)
Cause: Motion monitoring functions with set acceleration monitoring (SAM, p9306 = 3):
- after initiating STOP B (SS1) the velocity has exceeded the selected tolerance.
Motion monitoring functions with set brake ramp monitoring (SBR, p9306 = 1):
- after initiating STOP B (SS1) or SLS changeover to the lower speed level, the speed has exceeded the selected
tolerance.
The drive is shut down by the message C30700 "SI Motion P2: STOP A initiated".
Remedy: Check the braking behavior and, if necessary, adapt the parameterization of the parameter settings of the "SAM" or
the "SBR" function.
This message can be acknowledged without a POWER ON using "Acknowledge internal event".
SAM: Safe Acceleration Monitor (safe acceleration monitoring)
SBR: Safe Brake Ramp (safe brake ramp monitoring)
SI: Safety Integrated
See also: p9348 (SI Motion SAM actual velocity tolerance (processor 2)), p9381 (SI Motion brake ramp reference
value (processor 2)), p9382 (SI Motion brake ramp delay time (processor 2)), p9383 (SI Motion brake ramp
monitoring time (processor 2)), p9548 (SI Motion SAM actual speed tolerance (processor 1))
C30711 SI Motion P2: Defect in a monitoring channel
Message class: Safety monitoring channel has identified an error (10)
Reaction: NONE
Acknowledge: IMMEDIATELY (POWER ON)
Cause: When cross-comparing the two monitoring channels, the drive detected a difference between the input data or results
of the monitoring functions and initiated a STOP F. One of the monitoring functions no longer reliably functions - i.e.
safe operation is no longer possible.
If at least one monitoring function is active, then message C30701 "SI Motion: STOP B initiated" is output.
The following message values may also occur in the following cases if the cause that is explicitly mentioned does not
apply:
- synchronization error between processor 1 and processor 2.
Message value (r2124, interpret decimal):
0 ... 999:
Number of the cross-compared data that resulted in this message.
The significance of the individual message values is described in safety message C01711.
1000: Watchdog timer has expired. Too many signal changes have occurred at the F-DI.
1001: Initialization error of watchdog timer.
1011: Acceptance test status between the monitoring channels differ.
1020: Cyc. communication failure between the monit. channels.
1040: Pulses suppressed with active encoderless monitoring functions.
1041: Current absolute value too low (encoderless)
1042: Current/voltage plausibility error
1043: Too many acceleration phases
1044: Actual current values plausibility error.
See also: r9725 (SI Motion diagnostics STOP F)
Remedy: For message value = 1040:
- de-select encoderless monitoring functions, select and de-select STO.
- if monitoring function "SLS" is active, issue a pulse enable within 5 s of de-selecting STO.
For other message values:
- the significance of the individual message values is described in safety message C01711.
Note:
This message can be acknowledged using "Acknowledge internal event".
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SINAMICS G120 CU250S-2 Control Units
List Manual, 09/2017, A5E33842890