Table of Contents
Advertisement
1MRS 755310
4.1.1.8.
Feeder Protection Relay
Technical Reference Manual
INTERNAL FAULT
FAULT CODE :30
Fig. 4.1.1.7.-1 Permanent IRF
In case of a warning, the relay will continue to operate with full or reduced
functionality and the green indicator LED (ready) will remain lit as during normal
operation. A fault indication message (see Fig. 4.1.1.7.-2), with a possible fault code
(see Fig. 4.1.1.7.-3), will appear on the LCD indicating the type of fault. In case of
a warning due to an external fault in the trip circuit detected by the trip-circuit
supervision, or due to continuous light on the light sensor inputs, SO2 will be
activated (if SGF1/8=1).
WARNING
BATTERY LOW
Fig. 4.1.1.7.-2 Warning with text message
WARNING
FAULT CODE:
33
Fig. 4.1.1.7.-3 Warning with numeric code
For fault codes, refer to section Self-supervision (IRF) system.
Time synchronization
Time synchronization of the relay's real-time clock can be realized in two different
ways: via serial communication using a communication protocol or via a digital
input.
Any digital input can be configured for time synchronization and used for either
minute-pulse or second-pulse synchronization. The synchronization pulse is
automatically selected and depends on the time range within which the pulse occurs.
The time must be set once, either via serial communication or manually via the HMI.
If the synchronization pulse differs more than +/- 0.05 seconds for second-pulse or
+/- 2 seconds for minute-pulse synchronization from the relay's real-time clock, the
synchronization pulse will be rejected.
REF 610
15
Advertisement
Table of Contents
