Date Code 20170927 Instruction Manual SEL-751 Relay
Appendix B
Firmware Upgrade Instructions
Overview
These instructions guide you through the process of upgrading firmware in the
device. The firmware upgrade will be either a standard release or a point
release. A standard release adds new functionality to the firmware beyond the
specifications of the existing version. A point release is reserved for
modifying firmware functionality to conform to the specifications of the
existing version.
A standard release is identified by a change in the R-number of the device
firmware identification (FID) string.
Existing firmware:
FID=SEL-751-R100-V0-Z001001-Dxxxxxxxx
Standard release firmware:
FID=SEL-751-R101-V0-Z001001-Dxxxxxxxx
A point release is identified by a change in the V-number of the device FID
string.
Existing firmware:
FID=SEL-751-R100-V0-Z001001-Dxxxxxxxx
Point release firmware:
FID=SEL-751-R100-V1-Z001001-Dxxxxxxxx
These firmware upgrade instructions apply to all SEL-700 series industrial
products except the SEL-701 Relay and SEL-734 Meter.
SEL occasionally offers firmware upgrades to improve the performance of
your relay. Because SEL-751 relays store firmware in flash memory, changing
physical components is not necessary. Upgrade the relay firmware by
downloading a file from a personal computer to the relay via the front-panel
serial port via
ACSELERATOR QuickSet SEL-5030 Software or a terminal
emulator as outlined in the following sections. For relays with IEC 61850
option, verify IEC 61850 protocol after the upgrade (see Protocol Verification
for Relays With IEC 61850 Option).
Required Equipment
Gather the following equipment before starting this firmware upgrade:
➤ Personal computer (PC)
➤ Terminal emulation software that supports Xmodem/CRC or
1k Xmodem/CRC protocol
➤ Serial communications cable (SEL-C234A or equivalent, or a
null-modem cable)
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