Alarms, Faults And System - Siemens SINAMICS G120 Operating Instructions Manual

Advanced commissioning
6.22 Real time clock (RTC)
Parameter
p8405
Accept the real-time clock in the alarm and fault buffer
Using the real-time clock, you can track the sequence of alarms and faults over time. When
an appropriate message occurs, the inverter converts the real-time clock into the UTC time
format (Universal Time Coordinated):
Date, time ⇒ 01.01.1970, 0:00 + d (days) + m (milliseconds)
The inverter takes the number "d" of the days and the number "m" of the milliseconds in the
alarm and fault times of the alarm and/or fault buffer.
Converting UTC to RTC
An RTC can again be calculated in the UTC format from the saved fault or alarm time. In the
Internet, you will find programs to convert from UTC to RTC, e.g.
UTC to RTC (http://unixtime-converter.com/)
Example:
Saved as alarm time in the alarm buffer:
r2123[0] = 2345 [ms]
r2145[0] = 14580 [days]
Number of seconds = 2345 / 1000 + 14580 × 86400 = 1259712002
Converting this number of seconds to RTC provides the date: 02.12.2009, 01:00:02.
The times specified for alarms and faults always refer to standard time.
294
Real-time clock (RTC)
RTC activate/deactivate alarm A01098 (Factory setting: 1)
Alarm for non synchronous time, e.g. after a longer power supply interruption.
0: No alarm
1: Alarm A01098
Alarms, faults and system messages (Page 395)
Converter with the CU230P-2 Control Units
Operating Instructions, 09/2017, FW V4.7 SP9, A5E34257946B AE