B.12
SEL-351S Relay Instruction Manual Date Code 20080103
SEL-300 Series Relays Firmware Upgrade Instructions
Relay Firmware Upgrade Instructions
Step 3. Type Y to erase the existing firmware and load new firmware.
(To abort, type N or press <Enter>).
The relay responds with the following:
Erasing
Erase successful
Press any key to begin transfer, then start transfer at the PC <Enter>
Step 4. Press <Enter> to start the file transfer routine.
Step 5. Send new firmware to the relay.
a. From the Transfer menu in HyperTerminal, choose
Send File (Figure B.14).
b. In the Filename text box, type the location and
filename of the new firmware or use the Browse button
to select the firmware file.
c. In the Protocol text box, select 1K Xmodem if this
protocol is available.
If the computer does not have 1K Xmodem, select
Xmodem.
d. Click Send to send the file containing the new
firmware.
You should see a dialog box similar to Figure B.14.
Incrementing numbers in the Packet box and a bar
advancing from left to right in the File box indicate that
a transfer is in progress.
Receiving software takes 10–15 minutes at 38400 bps,
depending on the relay. If you see no indication of a transfer in
progress within a few minutes after clicking Send, use the
REC command again and reattempt the transfer.
After the transfer completes, the relay displays the following:
Upload completed successfully. Attempting a restart.
A successful restart sequence can take as long as two minutes,
after which time the relay leaves SEL
BOOT. You will see no
display on your PC to indicate a successful restart.
Figure B.14 Selecting New Firmware to Send to the Relay
NOTE: Unsuccessful uploads can
result from Xmodem time-out, a
power failure, loss of communication
between the relay and the computer,
or voluntary cancellation. Check
connections, reestablish
communication, and start again at
Step 2 on page B.11.
If you want to reload the previous
firmware, begin at Step 2 on page B.11
and use the firmware you saved in E.
Download Existing Firmware on
page B.10. Contact the factory for
assistance in achieving a successful
firmware upgrade.