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l SUBSTITUTION OF COMPONENTS MAY IMPAIR SUITABILITY
FOR CLASS I, DIVISION 2/ZONE 2.
l EXPLOSION HAZARD Class I, Division 2/Zone 2 Installations
l DO NOT DISCONNECT EQUIPMENT UNLESS POWER HAS
BEEN SWITCHED OFF OR THE AREA IS KNOWN NOT TO BE
HAZARDOUS.
Periodic checks
Check . . . Possible Corrective Action . . .
That the light emitting diodes (LED) are
working.
Replace module
That all connections are secure, including
ground lug.
Secure connections, as needed.
That cable insulation is not worn or cracked. Replace cables, as required.
That modules and power supplies are secure. Tighten mounting screws.
That airflow is unobstructed. Clean vent holes, remove
obstructions.
Removal and Insertion Under Power (RIUP)
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.
l With no physical damage to the module, to the rack, or to other
modules in the rack
l Without disturbing the functions of other I/O modules in the
rack.
l Under carefully controlled circumstances, this feature enables
the user to remove and insert an I/O module without
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