B.18
SEL-400 Series Relays Instruction Manual Date Code 20171006
Firmware Upgrade Instructions
Technical Support
Step 7. Type Y <Enter>.
The relay can take as long as two minutes to restore default settings.
The relay then reinitializes, and the ENABLED LED illuminates. This
LED is labeled either EN or ENABLED, depending on the relay model.
Step 8. Press <Enter> to check for the Access Level 0 = prompt indicating
that serial communication is successful.
Step 9. Use the ACC and 2AC commands and type the corresponding pass-
words to reenter Access Level 2.
Step 10. Use the CAL command and type the corresponding password to
enter the relay Calibration settings level.
Step 11. Type SHO C <Enter> to verify the relay calibration settings.
If using Method One and the settings do not match the settings
contained in the text file you recorded in C Save Settings and Other
Data on page B.9, contact SEL for assistance.
If using Method Two and the settings do not match the settings
contained in the text file you recorded in B Prepare the Relay on
page B.9, contact SEL for assistance.
Step 12. Use the PAS n (n = 0, 1, 2, B, P, A, O, C) command to set the relay
passwords.
Step 13. Restore the relay settings:
a. If you have SEL-5010 Relay Assistant software or 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
QuickSet, restore the original settings by issuing the necessary
SET n commands.
Step 14. If any failure status messages still appear on the relay display, see the
Testing and Troubleshooting section in your relay instruction manual
or contact SEL for assistance.
Technical Support
We appreciate your interest in SEL products and services. If you have questions
or comments, please contact us at:
Schweitzer Engineering Laboratories, Inc.
2350 NE Hopkins Court
Pullman, WA 99163-5603 U.S.A.
Tel: +1.509.338.3838
Fax: +1.509.332.7990
Internet: selinc.com/support
Email: info@selinc.com
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