Sel 551 - Appendix A: Firmware and Manual Versions Firmware

A.2
SEL-551 Relay Instruction Manual Date Code 20110408
Firmware and Manual Versions
Firmware
SEL-551-R111-Vr-Z001001-D20061005
SEL-551-R511-Vf-Z002002-D20061005
➤ Modified front-panel phase targeting to target on other 50/51
fault elements.
➤ Fixed the demand ammeter calculation during the transition of
daylight savings when connected to a timesource.
➤ Added relay settings to the end of the compressed event reports.
20061005
SEL-551-R110-Vr-Z001001-D20050523
SEL-551-R510-Vf-Z002002-D20050523
➤ Manual update only (see Table A.2). 20050725
SEL-551-R110-Vr-Z001001-D20050523
SEL-551-R510-Vf-Z002002-D20050523
➤ Fixed Modbus
®
communications issue when polled by certain
Modbus master devices.
20050523
SEL-551-R509-Vf-Z002002-D20050124
➤ Password security enhancement.
➤ Rising-edge and falling-edge detect operators in SELOGIC
®
control equations.
➤ Torque control setting equations for overcurrent elements can no
longer be set directly to logical 0.
➤ Relay Word bit TRGTR (Target Reset output).
➤ VER serial port command.
20050124
SEL-551-R109-Vr-Z001001-D20030905
SEL-551-R508-Vf-Z001001-D20030905
➤ CT Saturation Protection was enhanced to improve security
with low-set instantaneous values.
20030905
SEL-551-R108-Vr-Z001001-D20020828
SEL-551-R507-Vf-Z001001-D20020828
➤ Manual update only (see Table A.2). 20021025
SEL-551-R108-Vr-Z001001-D20020828
SEL-551-R507-Vf-Z001001-D20020828
➤ Added CT Saturation Protection
➤ Added Raw Event Report
➤ Made internal changes to support battery-backed clock hard-
ware change.
20020828
SEL-551-R107-Vr-Z001001-D20000211
SEL-551-R506-Vf-Z001001-D20000211
➤ Manual update only (see Table A.2). 20010518
SEL-551-R107-Vr-Z001001-D20000211
SEL-551-R506-Vf-Z001001-D20000211
➤ Added Modbus
®
RTU protocol.
➤ Added instantaneous element front-panel targeting of INST, A, B,
C, and N LEDs.
➤ Changed FID format.
20000211
SEL-551-R106-Vr-D991116
SEL-551-R505-Vf-D991112
➤ Manual update only (see Table A.2). 991117
SEL-551-R106-Vr-D991116
SEL-551-R505-Vf-D991112
➤ Improved Fast Operate compatibility. 991112
SEL-551-R105-Vr-D970616
SEL-551-R504-Vf-D970616
➤ Manual update only (see Table A.2). 981201
SEL-551-R105-Vr-D970616
SEL-551-R504-Vf-D970616
➤ Manual update only (see Table A.2). 981027
SEL-551-R105-Vr-D970616
SEL-551-R504-Vf-D970616
➤ Manual update only (see Table A.2). 980831
SEL-551-R105-Vr-D970616
SEL-551-R504-Vf-D970616
➤ Manual update only (see Table A.2). 970717
SEL-551-R105-Vr-D970616
SEL-551-R504-Vf-D970616
Added Demand Ammetering:
See Demand Ammetering toward end of Section 3: Relay Elements
and Logic.
970616
➤ Added settings DMTC, PDEMP, NDEMP, GDEMP, QDEMP
(see Settings Sheet page 3, Section 4: Setting the Relay).
➤ Added Relay Word bits PDEM, NDEM, GDEM, QDEM (see
Table 4.3 and Table 5.5).
Table A.1 Firmware Revision History (Sheet 2 of 3)
Firmware Identification (FID) Number Summary of Revisions
Manual
Date Code