1769 Compact I/O Communication Bus Expansion Cables 7
Publication 1769-IN014B-EN-P - May 2002
Installation
Prevent Electrostatic Discharge
Remove Power
Electrostatic discharge can damage integrated circuits or
semiconductors if you touch bus connector pins or the
terminal block. Follow these guidelines when handling 1769
Compact I/O components:
• 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 workstation.
• When not in use, keep cables in static shield packaging.
Remove power before making or breaking cable connections.
When you remove or insert a cable connector 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. Worn contacts may create
electrical resistance.
Allen-Bradley HMIs
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