Siemens SIMEAS R User Manual

8
8.5 Fault Handling
110 Digital Fault Recorder, SIMEAS R-PMU, Manual
E50417-H1076-C360-A5, Release 10.2012
8.5.2 GPS/DCF77 and Sync-Box
Non-critical faults
 Failure of one or two second pulses. SIMEAS R-PMU does not switch over to internal
synchronization, the device remains synchronized. PMU data is not marked as faulty.
 Failure of second pulses for 3 seconds up to 5 minutes. SIMEAS R-PMU switches over to
internal synchronization, the device is no longer synchronized. PMU data is marked as faulty.
Critical faults
 Second pulse failure for more than 5 minutes
 Wrong second pulse distance
 Wrong second pulse widths
 DCF77 parity error
 Minute mark missing
 More than 5 non-critical faults within 10 minutes
With critical faults, the SIMEAS R always switches over to internal synchronization, the device
is not longer synchronized. PMU data is marked as faulty.
8.5.3 Fault Elimination
Due to impaired GPS reception properties of the timer, non-critical synchronization faults may
sometimes occur in the normal mode. If there are a lot of non-critical or some critical faults, you
have to check the clock master and all synchronization components.

Siemens SIMEAS R Specifications

General

Brand	Siemens
Model	SIMEAS R
Category	Measuring Instruments
Language	English