Chapter 2: Installation and Wiring
2-3
User’s Manual Pub. 0300322-01 Rev. A
2.3.3
Remove Power
WARNING
Remove power before removing or inserting this module.
When you
remove or insert a module with power applied, an electrical arc may occur.
An electrical arc can cause personal injury or property damage by:
•
Sending an erroneous signal to your system’s field devices,
causing unintended machine motion.
•
Causing an explosion in a hazardous environment.
•
Causing an electrical arc. Electrical arcing causes excessive wear
to contacts on both the module and its mating connector and may
lead to premature failure
.
2.3.4
Selecting a Location
Reducing Noise
Most applications require installation in an industrial enclosure to reduce the
effects of electrical interference. Analog channels are highly susceptible to
electrical noise. Electrical noise coupled to the analog channels will reduce the
performance (accuracy) of the module. Group your modules to minimize adverse
effects from radiated electrical noise and heat. Consider the following conditions
when selecting a location for the analog module. Position the module:
•
Away from sources of electrical noise such as hard-contact switches,
relays, and AC motor drives.
•
Away from modules which generate significant radiated heat. Refer to
the module’s heat dissipation specification.
In addition, route shielded, twisted-pair analog input wiring away from any high
voltage I/O wiring.
Section 2.4
Mounting
WARNING
Keeping module free of debris and avoiding overheating:
•
Do not remove protective debris strip until after the module and
all other equipment near the module is mounted and the wiring is
complete.
•
Once wiring is complete, and the module is free of debris,
carefully remove protective strip.
•
Failure to remove strip before operating can cause overheating.
