4
22. Use the PA RT NO command from Access Level C to enter the exact part number of the relay after the
relay restarts and the ENABLED LED is turned on to indicate the card was installed correctly.
After reconfiguration, the relay updates the part number, except for the digits shown below. These digits
remain unchanged, i.e., these digits retain the same character as before the reconfiguration. A
communications card (DeviceNet or EIA-232/485) installed in Slot C will be reflected as an empty slot in
the part number. A regular 4 DI/4 DO card and a hybrid 4 DI/4 DO card have the same device ID. When
interchanging these two cards, the part number for the respective slots should be updated manually. Use
the STATUS command to view the part number.
23. Update the side-panel drawing with the drawing sticker provided in the option card kit. If necessary,
replace the rear panel with the one applicable for the card and attach the terminal marking label provided
with the card to the rear-panel cover. Also, contact SEL for an updated product serial number label with
the updated part number.
24. Reconnect all connection plugs, and add any additional wiring/connectors required by the new card.
Slot B CPU Card Replacement
Before replacing the Slot B card, do the following:
1. Ensure that the card has the latest firmware from the factory.
2. Review the firmware revision history for the changes that were made; note that new settings added, if any,
might affect existing settings in the relay or its application.
3. Save all the settings and event reports before replacing the card.
4. If the IEC 61850 protocol option was used previously, verify that the IEC 61850 protocol is still
operational after the replacement. If not, reenable it. Refer to Protocol Verification for Relays With
IEC 61850 Option in Appendix B: Firmware Upgrade Instructions of the instruction manual.
Perform the following steps to replace the existing CPU card with a new card.
1. Turn off the power to the relay.
2. Use a ground strap between yourself and the relay.
3. Disconnect the terminal blocks and CT/PT wires.
4. Remove the rear panel.
5. Remove the card from its slot and insert the new card.
6. Attach the rear panel (new if applicable) and reconnect the terminal blocks and CT/PT wires.
7. Apply new side stickers to the relay.
8. Turn on the relay and log in via the terminal emulation software.
9. Issue the STA command and accept the new configuration.
10. From Access Level 2, type CAL to enter Access Level C.
Do not modify any settings other than those listed in this procedure.
The default password for Access Level C is CLARKE.
11. From Access Level C, issue the SET C command.
12. Update the relay serial number and part number to the appropriate values, type END, and then save the
settings.
PART NUM = 751001B5X1X7086020X
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