Spectrum Controls 1769sc-IF8u - Manual (Page 29)

Chapter 3: Installation and Wiring 19
Prevent Electrostatic Discharge
!
ATTENTION! Electrostatic discharge can damage integrated circuits or
semiconductors if 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:
· 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.
Remove Power
!
ATTENTION! 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.
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: