Date Code 20010518 Maintenance 10-5
SEL-2020 Instruction Manual
RELAY FIRMWARE UPGRADES
When you upgrade the firmware within an SEL relay attached to the SEL-2020, you will need to
re-auto-configure the SEL-2020 so it will recognize the upgraded relay. When performing a
relay firmware upgrade, go through these steps to insure continued proper operation:
1. Take the relay out of service. The SEL-2020 will show this port’s status as Inactive and will
no longer collect data.
2. Upgrade the relay according to its upgrade instructions.
3. Apply power to relay and re-set its settings, as necessary.
4. Perform any relay testing that your practices require.
5. Re-connect the relay to the SEL-2020, if necessary.
6. Connect a terminal to the SEL-2020 and go to Access Level 2.
7. Execute a SET P command on the relay port and re-auto-configure the port. Save these
settings.
8. Confirm that the SEL-2020 is now communicating as before.
9. Place relay back in service.
FACTORY ASSISTANCE
The employee-owners of Schweitzer Engineering Laboratories, Inc., are dedicated to making
electric power safer, more reliable, and more economical.
We appreciate your interest in SEL products, and we are committed to making sure you are
satisfied. If you have any questions, please contact us at:
Schweitzer Engineering Laboratories, Inc.
2350 NE Hopkins Court
Pullman, WA USA 99163-5603
Tel: (509) 332-1890
Fax: (509) 332-7990
We guarantee prompt, courteous, and professional service.
We appreciate receiving any comments and suggestions about new products or product
improvements that would help us make your job easier.
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