Alarms - Siemens SINAMICS G120 Operating Instructions Manual

Alarms, faults and system messages

9.3 Alarms

9.3 Alarms
Alarms have the following properties:
● They do not have a direct effect in the converter and disappear once the cause has been
removed
● They do not need have to be acknowledged
● They are signaled as follows
– Status display via bit 7 in status word 1 (r0052)
– At the Operator Panel with a Axxxxx
– Via STARTER, if you click on TAB
In order to pinpoint the cause of an alarm, there is a unique alarm code and also a value for
each alarm.
Alarm buffer
For each incoming alarm, the converter saves the alarm, alarm value and the time that the
alarm was received.
Figure 9-1
r2124 and r2134 contain the alarm value - important for diagnostics - as "fixed point" or
"floating point" number.
The alarm times are displayed in r2145 and r2146 (in complete days) as well as in r2123 and
r2125 (in milliseconds referred to the day of the alarm).
The converter uses an internal time calculation to save the alarm times. More information on
the internal time calculation can be found in Chapter Real time clock (RTC) (Page 281).
As soon as the alarm has been removed, the converter writes the associated instant in time
into parameters r2125 and r2146. The alarm remains in the alarm buffer even if the alarm
has been removed.
If an additional alarm is received, then this is also saved. The first alarm is still saved. The
alarms that have occurred are counted in p2111.
Figure 9-2
352
Saving the first alarm in the alarm buffer
Saving the second alarm in the alarm buffer
at the bottom left of the STARTER screen
Converter with CU230P-2 Control Units
Operating Instructions, 04/2015, FW V4.7 SP3, A5E34257946B AB