U.A.4
SEL-421 Relay User’s Guide Date Code 20090715
Firmware and Manual Versions
Firmware
SEL-421-2-R118-V0-Z008008-D20060630
SEL-421-3-R118-V0-Z008008-D20060630
Note: Firmware version R118 and newer are not applicable to the SEL-
421 and SEL-421-1.
➤ Corrected IG magnitude and angle calculations in the CEV
summary report.
➤ Added IEC 61850 support for the optional Ethernet card.
20060703
SEL-421-R117-V0-Z007007-D20060413
SEL-421-1-R117-V0-Z007007-D20060413
SEL-421-2-R117-V0-Z007007-D20060413
SEL-421-3-R117-V0-Z007007-D20060413
Note: This firmware version requires the use of R109 or later firmware
on any installed SEL-2701 Ethernet Card.
➤ Improved accuracy of time-tagged DNP LAN/WAN binary
inputs.
20060413
SEL-421-R116-V0-Z007007-D20060126
SEL-421-1-R116-V0-Z007007-D20060126
SEL-421-2-R116-V0-Z007007-D20060126
SEL-421-3-R116-V0-Z007007-D20060126
➤ Manual update only (see Table A.5). 20060302
SEL-421-R116-V0-Z007007-D20060126
SEL-421-1-R116-V0-Z007007-D20060126
SEL-421-2-R116-V0-Z007007-D20060126
SEL-421-3-R116-V0-Z007007-D20060126
➤ Added support for Main Board B and interface boards INT2,
INT7, and INT8 which are optoisolated versions of Main Board A
and interface boards INT1, INT5, and INT6.
➤ Updated to the released (non-draft) version of C37.118 IEEE
Synchrophasor Standard.
➤ Added support for SEL-421-2 and SEL-421-3.
➤ Updated to the released (non-draft) version of C37.118 IEEE
Synchrophasor Standard.
➤ Added alarm points and SER settings parameter HMI Alarm in
order to enable automatic HMI display of alarm points.
➤ Added analog display points.
➤ Expanded to 96 display points and changed format to display on a
single line.
➤ Changed Global setting class for contact inputs to support Main
Board A and Main Board B and interface boards INT1, INT2,
INT4, INT5, INT6, INT7, and INT8.
➤ Added setting SCROLD for changing the ROTATING DISPLAY
update rate.
➤ Added settings PB1_HMI through PB8_HMI for assigning alarm
point, display point, or event summary screens to the selectable
operator pushbuttons.
➤ Added settings DISP_ER and TYPE_ER for enabling and
configuring automatic HMI display of event summary screens.
➤ Added setting NUM_ER to specify the number of event summary
screens viewed through the operator pushbutton.
➤ Added 15 messages per second option for Global setting
MRATE.
➤ Corrected the voltage check element logic which is using
incorrect input voltages.
➤ Improved performance of phase directional element logic.
➤ Corrected transition from ROTATING DISPLAY to manual mode
when using navigational arrows.
20060126
Table A.1 Firmware Revision History (Sheet 4 of 9)
Firmware Identification (FID) Number Summary of Revisions
Manual
Date Code
Courtesy of NationalSwitchgear.com
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