Rockwell Automation 1769-SDN Compact I/O DeviceNet Scanner Module User Manual User Manual
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Publication 1769-UM009E-EN-P - August 2009
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Installation and Wiring Chapter 3
Preventing Electrostatic Discharge
Removing Power
Reducing Noise
We recommend installing this module in an industrial enclosure to reduce the
effects of electrical interference. Group your modules to minimize adverse
effects from radiated electrical noise and heat.
ATTENTION
Electrostatic discharge (ESD) can damage integrated circuits or
semiconductors if you touch the bus connector pins. 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.
• Use a static-safe work station, if available.
• Keep the module in its static-shield box when it is not in use.
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 can lead to premature failure.