Siemens SINAMICS G120P, Operating Instructions Manual

Page: 436 / 496

Alarms, faults and system messages
9.3 Alarms
Inverter cabinet units
436
Operating Instructions, 12/2014, A5E32923362A
If r2114[0] has reached a value of 86,400,000 ms (24 hours), r2114[0] is set to the value 0
and the value of r2114[1] is increased by 1.
Parameter Description
r2114[0] System runtime (ms)
r2114[1] System runtime (days)
You cannot reset the system runtime.
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 at the bottom left of the STARTER screen
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 Saving the first alarm in the alarm buffer
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 397).
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.