B.16
SEL-351A Relay Instruction Manual Date Code 20080213
Firmware Upgrade Instructions
Relay Firmware Upgrade Instructions
CR_RAM, EEPROM, and IO_BRD Fail Status Messages
Step 1. Use the ACC and 2AC commands with the associated
passwords to enter Access Level 2.
The factory default passwords are in effect; use the default
relay passwords listed in the PAS command description in the
relay instruction manual.
Step 2. Type R_S <Enter> to restore factory default settings in the
relay (type R_S 1 <Enter> for a 1 A SEL-387 or 1 A SEL-352
relay).
The relay asks whether to restore default settings. If the relay
does not accept the R_S (or R_S 1) command, contact your
customer service representative or the factory for assistance.
Step 3. Type Y <Enter>.
NOTE: If the relay prompts you to
enter a part number, use either the
number from the firmware envelope
label or the number from the new part
number sticker (if supplied).
The relay can take as long as two minutes to restore default
settings. The relay then reinitializes, and the EN LED
illuminates.
Step 4. Press <Enter> to check for the Access Level 0
= prompt
indicating that serial communication is successful.
Step 5. Use the ACC and 2AC commands and type the corresponding
passwords to reenter Access Level 2.
Step 6. Restore the original settings:
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 available in the
relay).
Step 7. 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 8. If any failure status messages still appear on the relay display,
see Section 13: Testing and Troubleshooting or contact your
customer service representative or the factory for assistance.
H. Verify Settings, Calibration, Status, Breaker Wear, and Metering
Step 1. Use the ACC and 2AC commands with the associated
passwords to enter Access Level 2.
Courtesy of NationalSwitchgear.com
To Next Page
Loading...