Honeywell ControlEdge 900 platform, Hardware Planning And Installation Manual, Page: 48 / 230

To replace a non-redundant or unsynchronized primary CPM:
1. If a process is currently in operation, bring it to the safe mode, and
orderly shutdown if it is required.
2. Using an external (user-supplied) switch, disconnect the power
supply in the rack 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 (associated
with the CPM to be replaced), and remove the CPM from the rack.
(Note that an up/down rocking motion helps with removal of the
module).
5. Configure the new UOC/CPM rotary device index switches to
match the old UOC/CPM 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 was running in the removed module.
10. Use the Control Builder to load the configuration to the new CPM.
Replacing a secondary UOC-CPM
ATTENTION: Replacing a secondary CPM can be performed
while on-process or 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.
Wear an ESD wrist strap and observe static precautions.
You will need a #2 Phillips screwdriver.
To replace a secondary UOC-CPM:
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