Prevent Electrostatic Discharge; Remove Power; Selecting A Location; Reducing Noise - Spectrum Controls 1769 User Manual

EXPLOSION HAZARD
WARNING
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2.5.2 Prevent Electrostatic Discharge

Electrostatic discharge can damage integrated circuits or semiconductors if
WARNING
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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2.5.3 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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2.5.4 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.
Substitution of components may impair suitability for Class I,
Division 2. Do not replace components or disconnect equipment
unless power has been switched off or the area is known to be
non-hazardous.
Do not connect or disconnect components unless power has been
switched off or the area is known to be non-hazardous.
Device shall be installed in an enclosure which can only be
opened with the use of a tool.
All wiring must comply with N.E.C. article 501-4(b), 502-4(b), or
503-3(b), as appropriate for Class I, Class II, and Class III
equipment.
Touch a grounded object to discharge static potential.
Wear an approved wrist-strap grounding device.
Do not touch the bus connector or connector pins.
Do not touch circuit components inside the module.
If available, use a static-safe work station.
When it is not in use, keep the module in its static-shield bag.
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. Such arcing causes excessive wear to
contacts on both the module and its mating connector, and may
lead to premature failure.
Chapter 1: Module Overview
User's Manual Pub. 0300241-02 Rev. A
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