Rockwell Automation 1769-IR6 Compact I/O 1769-IR6 RTD/Resistance Input Module - Manual (Page 30)

30 Rockwell Automation Publication 1769-UM005B-EN-P - March 2012
Chapter 3 Installation and Wiring
Remove Power
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 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, such as the
1769-IA16. Refer to the module’s heat dissipation specification.
In addition, route shielded, twisted-pair wiring away from any high voltage I/O
wiring.
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
· Electrical arcing causes excessive wear to contacts on
both the module and its mating connector and may
lead to premature failure.