Tm54F: Discrepancy Error - Siemens Sinamics S120 Diagnostic Manual

SINAMICS alarms
235151 <location>TM54F: Discrepancy error
Message value: %1
Drive object: AFE_SINUMERIK_828, BIC_SINUMERIK_828, SERVO_COMBI, SERVO_SINUMERIK828, SIC_COMBI,
SIC_SINUMERIK_828, TM54F_MA, TM54F_SL
Reaction: NONE
Acknowledge: IMMEDIATELY
Cause: The safety input terminals or output terminals show a different state longer than that parameterized in p10002.
Fault value (r0949, interpret hexadecimal):
yyyyxxxx hex
xxxx:
The safety-relevant input terminals F-DI indicate a discrepancy.
Bit 0: Discrepancy for F-DI 0
...
Bit 9: Discrepancy for F-DI 9
yyyy:
The safety-relevant output terminals F-DO indicate a discrepancy.
Bit 0: Discrepancy for F-DO 0
...
Bit 3: Discrepancy for F-DO 3
Note:
If several discrepancy errors occur consecutively, then this fault is only signaled for the first error that occurs.
The following possibilities exist of diagnosing all of the discrepancy errors:
- in the commissioning software, evaluate the input states and output states of the TM54F. All discrepancy errors are
displayed here.
- compare parameters p10051 and p10052 from the TM54F master and TM54F slave for discrepancy.
Remedy: Check the wiring of the F-DI and F-DO (contact problems).
Note:
A discrepancy of the F-DO also occurs (in this special case, in conjunction with fault F35150 for the TM54F slave), if,
after replacing a Motor Module, it was forgotten to acknowledge this.
When replacing a Motor Module, carry out the following steps:
- start the copy function for the node identifier on the TM54F (p9700 = 1D hex).
- acknowledge the hardware CRC on the TM54F (p9701 = EC hex).
- save all parameters (p0977 = 1).
- carry out a POWER ON (power off/on) for all components.
Discrepancy errors in the F-DIs can only be completely acknowledged if, after the cause of the error was resolved,
safe acknowledgement was carried out (see p10006). As long as safety acknowledgement was not carried out, the
corresponding F-DI stays in the safe state.
F-DI: Failsafe Digital Input
F-DO: Failsafe Digital Output
Where switching operations recur cyclically on the FDIs, the discrepancy time must be parameterized as follows:
td = possible actual discrepancy time (in ms) that can occur with a switching operation. This must correspond to at
least 1 SI sampling cycle (see p10000).
tp = period for a switching operation in ms.
The following rules must be adhered to:
p10002 < (tp/2) - td (discrepancy time must be less than half the period minus the actual discrepancy time)
p10002 > = p10000 (discrepancy time must be no less than P10000)
p10002 > td (discrepancy time must be greater than the switch discrepancy time which may actually apply)
Example: If SI sampling cycle is 12 ms and switching frequency is 110 ms, the maximum discrepancy time which can
be set is as follows:
p10002 < = 110ms/2 - 12ms = 43mS; this rounds off to P10002 <= 36 ms.
(Since the sampling time can only be accepted as a whole SI sampling cycle, the value will need to be rounded up or
down to a whole SI sampling time value if it is not an exact multiple of an SI sampling cycle.)
854
Diagnostics Manual, 07/2010, 6FC5398-8BP40-0BA0
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