defect severity 4 – the group alarm – is set user-specifically by the binary input signal
(_:503) >Group
alarm
. If the binary input signal is reset, the device is no longer in the
Group alarm
condition and all func-
tions return to the normal operating state.
If the group alarm is generated, the device reacts as follows:
•
The group indication
(_:300) Group alarm
is generated and recorded in the operational log.
•
The life contact is terminated.
•
The red Error LED is activated.
•
All protection and automation functions are blocked.
•
The device remains in operation, does not carry out any restart (reset), and does not switch to the safe
condition (Fallback mode).
•
The signals managed internally are marked with the invalid quality attribute. Signals managed inter-
nally are, for example, measured values, binary input and output signals, GOOSE and CFC signals.
In the delivery condition, every device has the CFC chart Process mode inactive, that initiates the Group
alarm (see chapter 9.9 Group Indications).
Life contact Is terminated in case of Group alarm
Red error LED Is initiated in case of Group alarm
Log
The group indication
(_:300) Group alarm
is recorded in the operational log. Depending on the cause of
the initiation, further information can be found in the operational log.
You can find further information on handling the logs in chapter 3.
Supervision Functions
9.8 Error Responses and Corrective Measures
SIPROTEC 5, Overcurrent Protection, Manual 1303
C53000-G5040-C017-8, Edition 07.2017
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