Periodic Checks; Removal And Insertion Under Power (Riup) - Honeywell ControlEdge 900 platform Hardware Planning And Installation Manual

Periodic checks

Check . . .
That the light emitting diodes (LED) are
working.
That all connections are secure, including
ground lug.
That cable insulation is not worn or cracked.
That modules and power supplies are secure.
That airflow is unobstructed.

Removal and Insertion Under Power (RIUP)

SUBSTITUTION OF COMPONENTS MAY IMPAIR SUITABILITY
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FOR CLASS I, DIVISION 2/ZONE 2.
EXPLOSION HAZARD Class I, Division 2/Zone 2 Installations
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DO NOT DISCONNECT EQUIPMENT UNLESS POWER HAS
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BEEN SWITCHED OFF OR THE AREA IS KNOWN NOT TO BE
HAZARDOUS.
CAUTION: All of the I/O module types in the ControlEdge 900
Controller System include the Removal and Insertion Under
Power (RIUP) feature. That is, while the rack is powered, any of
the controllers or I/O modules can be removed or inserted:
Read and understand all of the following information regarding
Removal and Insertion Under Power before attempting to remove
and/or replace CPM, EPM, I/O module or Power supply,
particularly in a system that is actively controlling a process.
With no physical damage to the module, to the rack, or to other
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modules in the rack
Without disturbing the functions of other I/O modules in the
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rack.
Under carefully controlled circumstances, this feature enables
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the user to remove and insert an I/O module without
Possible Corrective Action . . .
Replace module
Secure connections, as needed.
Replace cables, as required.
Tighten mounting screws.
Clean vent holes, remove
obstructions.
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