Prevent Electrostatic Discharge; Remove Power; Selecting A Location - Spectrum Controls 1734 User Manual

2.3.1 Prevent Electrostatic Discharge

Electrostatic discharge can damage integrated circuits or semiconductors if
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you touch analog I/O module bus connector pins or the terminal block on
the input module. Follow these guidelines when you handle the module:
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2.3.2 Remove Power

Remove power before removing or inserting this module. When you
WARNING
remove, or insert, a module with power applied, an electrical arc may
occur. An electrical arc can cause personal injury or property damage by:
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2.3.3 Selecting a Location

Reducing Noise
Most applications require installation in an industrial enclosure to reduce the
effects of electrical interference. Analog inputs are highly susceptible to
electrical noise. Electrical noise coupled to the analog inputs 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:
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In addition, route shielded, twisted-pair, analog input wiring away from any high
voltage I/O wiring.
Touch a grounded object to discharge static potential.
Wear an approved wrist-strap grounding device.
Do not touch connectors or pins on component boards.
Do not touch circuit components inside the module.
If available, use a static-safe work station.
When not in use, keep the module in its static-shield box
Sending an erroneous signal to your system's field devices,
causing unintended machine motion.
Causing an explosion in a hazardous environment.
Electric arcing causes excessive wear to contacts on both the
module and its mating connector, and may lead to premature
failure.
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.
Chapter 2: Installation and Wiring
User's Manual Pub. 0300266-02 Rev. B
2-3
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