B-16 SEL-300 Series Relays Firmware Upgrade Instructions Date Code 20080110
SEL-387E Instruction Manual
Problem Solution
The restart was successful, but the
relay data transmission rate reverted
to 2400 bps (the settings have been
reset to default).
Match the computer terminal speed to a relay data
transmission rate of 2400 bps:
Step 1. From the Call menu, choose Disconnect to
terminate relay communication.
Step 2. Change the communications software
settings to 2400 bps, 8 data bits, no parity,
and 1 stop bit (see Match Computer
Communications Speed to the Relay on page
B-10).
Step 3. From the Call menu, choose Connect to
reestablish communication.
Step 4. Press <Enter> to check for the Access
Level 0 = prompt indicating successful serial
communication.
If you see a SEL
BOOT
!> prompt, type
EXI <Enter> to exit SEL
BOOT
. Check for
the Access Level 0 = prompt.
If you see the Access Level 0 = prompt,
proceed to G. Check Relay Self-Tests.
The restart was unsuccessful, in
which case the relay is in
SEL
BOOT
.
Reattempt to upload the new firmware (beginning at
Step 5 under Establish a High-Speed Connection on page
B-10) or contact the factory for assistance.
G. Check Relay Self-Tests
The relay can display various self-test fail status messages. The troubleshooting procedures that
follow depend upon the status message the relay displays.
Step 1. Type ACC <Enter>.
Step 2. Type the Access Level 1 password and press <Enter>.
You will see the Access Level 1 => prompt.
Step 3. Enter the STATUS command (STA <Enter>) to view relay status messages.
If the relay displays no fail status message, proceed to H. Verify Settings,
Calibration, Status, Breaker Wear, and Metering on page
B-17.
IO_BRD Fail Status Message
Note: Perform this procedure if you have only an IO_BRD Fail Status message; for additional
fail messages, proceed to CR_RAM, EEPROM, and IO_BRD Fail Status Messages.
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