Rockwell Automation 1790P-4R0 CompactBlock LDX I/O RTD/Resistance Input Module - Manual (Page 16)

Publication 1790-UM002A-EN-P
2-4 Installation and Wiring
Selecting a Location
Reducing Noise
Most applications require installation in an industrial enclosure to reduce
the effects of electrical interference. RTD inputs are highly susceptible to
electrical noise. Electrical noise coupled to the RTD inputs will reduce the
performance (accuracy) of the module.
Group your modules in the enclosure to minimize adverse effects from
radiated electrical noise and heat. Consider the following conditions when
selecting a location for the 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.
In addition, route shielded, twisted-pair wiring away from any high
voltage I/O wiring.
ATTENTION
ÿ
Preventing Electrostatic Discharge
This equipment is sensitive to electrostatic discharge,
which can cause internal damage and affect normal
operation. Follow these guidelines when you handle
this equipment:
•
Touch a grounded object to discharge potential static.
•
Wear an approved grounding wriststrap.
•
Do not touch connectors or pins on component
boards.
•
Do not touch circuit components inside the equipment.
•
If available, use a static-safe workstation.
•
When not in use, store the equipment in appropriate
static-safe packaging.
WARNING
ÿ
If you insert or remove the module while power is on,
an electrical arc can occur. This could cause an
explosion in hazardous location installations.
Be sure that power is removed or the area is
nonhazardous before proceeding.