Schweitzer Engineering Laboratories SEL-351A - Page 549

B.15
Date Code 20080213 Instruction Manual SEL-351A Relay
Firmware Upgrade Instructions
Relay Firmware Upgrade Instructions
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.16.
IO_BRD Fail Status Message
Perform this procedure only 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 on page B.16.
Step 1. From Access Level 2, type INI <Enter> to reinitialize the I/O
board(s). If this command is unavailable, go to CR_RAM,
EEPROM, and IO_BRD Fail Status Messages.
The relay asks the following:
Are the new I/O board(s) correct (Y/N)?
a. Type Y <Enter>.
b. After a brief interval (as long as a minute), the EN LED
will illuminate.
If the EN LED does not illuminate and you see a
SEL
BOOT !> prompt, type EXI <Enter> to exit
SEL
BOOT. After a brief interval, the EN LED will
illuminate. Check for Access Level 0
= prompt.
c. Use the ACC and 2AC commands and type the
corresponding passwords to reenter Access Level 2.
d. Enter the SHO n command to view relay settings and
verify that these match the settings you saved (see
Backup Relay Settings on page B.7).
Step 2. If the settings do not match, reenter the settings you saved
earlier.
a. If you have SEL-5010 Relay Assistant software or
ACSELERATOR QuickSet, restore the original settings
by following the instructions for the respective
software.
b. If you do not have the SEL-5010 Relay Assistant
software or
ACSELERATOR QuickSet, restore the
original settings by issuing the necessary SET n
commands, where n can be 1–6, G, P, L, T, R, X, or Y
(depending upon the settings classes in the relay).
Step 3. Use the PAS command to set the relay passwords.
For example, type PAS 1 <Enter> to set the Access Level 1
password.
Use a similar format for other password levels. SEL relay
passwords are case sensitive, so the relay treats lowercase and
uppercase letters as different letters.
Step 4. Go to H. Verify Settings, Calibration, Status, Breaker Wear, and
Metering.
NOTE: Depending upon the relay, n
can be 1–6, G, P, L, T, R, X, or Y.
Courtesy of NationalSwitchgear.com