Faults - Siemens SINAMICS G120 CU240B-2 Operating Instructions Manual

9.4

Faults

A fault displays a severe fault during operation of the inverter.
The inverter signals a fault as follows:
● at the Operator Panel with Fxxxxx
● at the Control Unit using the red LED RDY
● in bit 3 of the status word 1 (r0052)
● via STARTER
To delete a fault message, you need to remedy the cause of the fault and acknowledge the
fault.
Every fault has a clear fault code and also a fault value. You need this information to
determine the cause of the fault.
Fault buffer of actual values
For each fault received, the inverter saves the fault code, fault value and the time of the fault.
Figure 9-5
r0949 and r2133 contain the fault value - important for diagnostics - as "fixed point" or
"floating point" number.
The "fault time received" is in parameter r2130 (in complete days) as well as in parameter
r0948 (in milliseconds referred to the day of the fault). The "fault time removed" is written into
parameters r2109 and r2136 when the fault has been acknowledged.
The inverter uses its internal time calculation to save the fault times. More information on the
internal time calculation can be found in Chapter System runtime (Page 186).
If an additional fault occurs before the first fault has been acknowledged, then this is also
saved. The first alarm remains saved. The fault cases that have occurred are counted in
p0952. A fault case can contain one or several faults.
Figure 9-6
Inverter with CU240B-2 and CU240E-2 Control Units
Operating Instructions, 07/2010, FW 4.3.2, A5E02299792B AA
Saving the first fault in the fault buffer
Saving the second fault in the fault buffer
Alarms, faults and system messages
9.4 Faults
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