Sel 551 - Appendix A: Firmware and Manual Versions; Firmware

Date Code 20110408 Instruction Manual SEL-551 Relay
Appendix A
Firmware and Manual Versions
Firmware
Determining the
Firmware Version in
Your Relay
To find the firmware revision number in your relay, view the status report
using the serial port STATUS command or the front-panel {STATUS}
pushbutton. For firmware versions prior to February 11, 2000, the status report
displays the Firmware Identification (FID) label:
FID=SEL-551-Rxxx-Vx-Dxxxxxx
For firmware versions with the date code of February 11, 2000, or later, the
FID label will appear as follows with the Part/Revision number in bold:
FID=SEL 551-Rxxx-Vx-Z001001-Dxxxxxxxx
The firmware revision number is after the “R” and the release date is after the
“D.” The single “x” after the “V” will be an “r” if the firmware is stored in
EPROM, and it will be an “f” if the firmware is stored in FLASH.
For example:
FID=SEL-551-R506-Vf-Z001001-D20000211
is firmware revision number 506, stored in FLASH, release date February 11,
2000.
Table A.1 lists the firmware versions, a description of modifications, and the
instruction manual date code that corresponds to firmware versions. The most
recent firmware version is listed first.
Table A.1 Firmware Revision History (Sheet 1 of 3)
Firmware Identification (FID) Number Summary of Revisions
Manual
Date Code
SEL-551-R514-Vf-Z002002-D20110408 ➤ Modified front-panel targeting logic to improve operation for
evolving faults, allow overcurrent elements to generate targets
only when in the TR equation, and add 50Q1 and 50Q2 to the
list of elements that initiate targeting.
20110408
SEL-551-R513-Vf-Z002002-D20080104
➤ Manual update only (see Table A.2). 20100630
SEL-551-R513-Vf-Z002002-D20080104
➤ Reduced Modbus exception code 6 responses. 20080104
SEL-551-R512-Vf-Z002002-D20070301
➤ Manual update only (see Table A.2). 20071025
SEL-551-R512-Vf-Z002002-D20070301
➤ Manual update only (see Table A.2). 20070709
SEL-551-R512-Vf-Z002002-D20070301
➤ Fixed potential conflict between simultaneous Fast Operate
requests through Port 1 and the front panel.
➤ Repaired Compressed Event report format to restore SEL-5601
compatibility.
20070301