Alstom MiCOM P846, Technical Manual

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Operation P846/EN OP/D
MiCOM P846
(OP) 5-25
OP
To avoid the event buffer from being filled with unnecessary time sync. events, it is possible
to ignore any event that is generated by the time sync. opto input. This can be done by
applying the following settings:
Menu Text Value
RECORD CONTROL
Opto Input Event Enabled
Protection Event Enabled
DDB 32 – 55 (Opto Inputs) Set “Time Sync.” associated opto to 0
To impr tim . op imatel opto
in disabled. This is achieved by setting the appropriate bit to 0 in the
“Opto Filter cell (OPTO CONFIG. c g may make the opto
in tible to in induced noise can be
minimized by using the meth ribed in sectio ware Design (P846/EN
FD) se
ove the recognition e of the time sync to input by approx y 10ms, the
put filtering could be
Cntl.”
put more suscep
olumn). Disabling the filterin
duced noise. Fortunately the effects of
ods desc n 1.2.3.3 of Firm
ction.