Remove Power; Selecting A Location; Mounting - Spectrum Controls Micro800 User Manual

Expansion i/o; analog combination i/o module
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WARNING

Mounting

WARNING

2.3.3 Remove Power

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.
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.
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.
Chapter 2: Installation and Wiring
User's Manual Pub. 0300307-01 Rev. A
2-3

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