B.13
Date Code 20170601 Instruction Manual SEL-387-0, -5, -6 Relay
SEL-300 Series Relays Firmware Upgrade Instructions
Upgrade Procedure
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.15.
Table B.1 Troubleshooting New Firmware Upload
Problem Solution
The restart was successful, but
the relay data transmission rate
reverted to the rate at which the
relay was operating prior to
entering SEL
BOOT (the rate
you recorded in A. Prepare the
Relay on page B.2).
Change the computer terminal speed to match the relay
data transmission rate you recorded in A. Prepare the
Relay on page B.2. (See Match Computer Communica-
tions Speed to the Relay on page B.9):
Step 1. From the Call menu, choose Disconnect to
terminate relay communication.
Step 2. Change the communications software settings
to the values you recorded in A. Prepare the
Relay on page B.2.
Step 3. From the Call menu, choose Connect to rees-
tablish communication.
Step 4. Press <Enter> to check for the Access
Level 0
= prompt indicating that serial com-
munication is successful.
Step 5. If you get no response, proceed to Match
Computer Communications Speed to the
Relay on page B.9.
The restart was successful, but
the relay data transmission rate
reverted to 2400 bps (the set-
tings 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.9).
Step 3. From the Call menu, choose Connect to rees-
tablish 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 SELBOOT. Check for
the Access Level 0
= prompt.
If you see the Access Level 0
= prompt, pro-
ceed 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.8) or contact the factory for assistance.
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