Firmware and Service Manual P54x/EN VH/La4
Version History
MiCOM P543, P544, P545 & P546
(
VH) 16-13
H
Relay type: P54x …
Software
Version
Major Minor
Hardware
Suffix
Original
Date of Issue
Description of Changes
S1
Compatibility
Technical
Documentation
A B Sep 2001
PSB now uses 6 comparators
Distance directional line fixed at -30º
PSB block issued when impedance passes into any Z1, Z2 or
Z3
PSB unblock via negative sequence current now done via PSL
Modified co-processor initiation to run on 1 wait state (memory
access problem)
Fixed a problem with P545 & P546 opto & relay labels in
disturbance record
Fixed the GPS inhibit
Recommended upgrading to 11G or later
V2.03 or Later P54x/EN T/D11
11
Cont.
B B Oct 2001
All builds released to production. Based on 11A software
Modified the co-processor start-up routine to work with
alternative types of SRAM
Improved response to a CS103 poll class 1 when monitor
blocked was active
Resolved a time alignment problem which resulted in C diff
failure alarms being raised
Corrected some MODBUS address for P545 & P546
Fixed a problem with the relays response to MODBUS
commands read coils and read inputs
Fixed an incorrect response to a DNP3.0 command
Recommended upgrading to 11G or later
V2.03 or Later P54x/EN T/D11
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