Relay type: P341 …
Software
Version
Major Minor
Hardware
Suffix
Original Date
of Issue
S1
Compatibility
Technical
Documentation
Description of Changes
05
Cont.
K A/B June 2004
MODBUS Time Transmission Format selectable via
MODBUS only setting as Standard or Reverse for
transmission of byte order
DO/PU ratio changed from 95% to 98% for Over/Under
Voltage protection. Trip threshold changed from 1.05, 0.95
Vs to 1 Vs for Over and Under Voltage and NVD protection.
TMS setting of Under/Over Voltage protection reduced from
0.5 to 0.05.
Correction to false frequency protection start at power-up.
MODBUS driver modified to prevent relay reboot with error
code 0x8C810000 in hardware A/B/C relays for 60Hz
applications where fast polling and high baud rates are used.
Modification to prevent reboot when large number of control
and settings are sent to relay in quick succession over DNP
3.0
IEC60870-5-103. Status of summer bit now works correctly
in time sync command.
Correction to DNP 3.0 software where settings download
from MiCOM S1 can fail for relays that have model
dependent I/O configurations.
Minor bug fixes
V2.05 or Later P341/EN T/D22
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