P54x/EN PL/La4 Programmable Logic
(PL) 7-46
MiCOM P543, P544, P545 & P546
PL
DDB no. English text Source Description
1447 3P Follower Time
Indicates a three pole autoreclose follower
time is running (either CB)
P544 and P546 only
1448 Auto Close CB2
Signal from autoreclose logic to initiate CB2
close via “CB2 CB Control”
P544 and P546 only
1449 Set CB2 Close
Indicates a CB2 Auto Close signal has been
issued
P544 and P546 only
1450 CB2 Control
Output DDB can be applied to inhibit CB2
reclose by adjacent scheme until local
autoreclose scheme confirms it is OK to close
CB2
P544 and P546 only
1451 CB2 Succ 1P AR
CB2 successful single phase AR
P544 and P546 only
1452 CB2 Succ 3P AR
CB2 successful three phase AR
P544 and P546 only
1453 CB2 Close inProg
CB2 Manual Close initiated – awaiting Man
Close Delay time
P544 and P546 only
1454 CB2 Fast SCOK
OK to reclose CB2 with sync check without
waiting for dead time to complete
P544 and P546 only
1455 CB2L SCOK
System conditions OK to reclose CB2 as
leader when dead time complete
P544 and P546 only
1456 CB2F SCOK
System conditions OK to reclose CB2 when
follower time complete
P544 and P546 only
1457 Not used
1458 CB2 Man SCOK
System conditions OK to manually close CB2
P544 and P546 only
1459 CB2 Fail Pr Trip
signal to force CB2 AR lockout if CB2 fails to
trip when protection operates
P544 and P546 only
1460 Not used
1461 Live Bus 2
Indicates Bus 2 input is live, i.e. voltage >=
setting "Live Bus 2"
P544 and P546 only
1462 Dead Bus 2
Indicates Bus 2 input is dead i.e. voltage <
setting "Dead Bus 2"
P544 and P546 only
1463 CB2 CS2 OK
CB2 close with synchronism check type 2 is
permitted (setting CS2-2 = Enabled), and Line
and Bus 2 voltages satisfy relay settings for
CB2 synchronism check type 2
P544 and P546 only
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