Replacing A Primary Uoc-Cpm - Honeywell ControlEdge 900 platform Hardware Planning And Installation Manual

1. [Optional] It is recommended to disable and prevent
synchronization first by issuing the redundancy disable
synchronization command from Control Builder.
2. Using an external (user-supplied) switch, disconnect the power
supply in the rack (associated with the CPM to be replaced) from
the source main power.
3. Observe where communications cables are plugged into the CPM
to be replaced, and if necessary, tag them to identify their
functions. Unplug all communications cables.
4. At the top and bottom of the module to be replaced, loosen the
captured screws that secure the module in the rack, and remove
the CPM from the rack. (Note that an up/down rocking motion
helps with removal of the module).
5. Configure the new CPM rotary device index switches to match the
rotary device index switches on the removed module.
6. Ensure that the new CPM is properly aligned with the slot guides,
insert the new CPM in the rack, and secure it in place with the
captured screws at top and bottom of the module.
7. Re-install communications cables.
8. Using an external (user-supplied) switch, re-connect the power
supply in the rack (associated with the new CPM) to the source
main power.
9. Use the Firmware Manager to load firmware to the new CPM to
match the version that is running in the primary redundant
partner CPM.
10. Check the redundancy synchronization state by monitoring the
role LED of the primary or secondary CPM.

Replacing a primary UOC-CPM

ATTENTION: Replacing a synchronized primary CPM can be
performed while on-process or off-process.
Replacing an unsynchronized primary CPM can only be
performed off-process.
We recommend that you proceed with extreme caution
whenever replacing any component in a control system. Be
sure the system is offline or in a safe operating mode.
Component replacements may also require firmware update
and/or downloading appropriate configuration data to the
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