Rockwell Automation 1756-DH485 ControlLogix Data Highway 485 Module Installation Instructions - Manual (Page 4)

4 ControlLogix DH-485 Communications Module
Publication 1756-IN587A-EN-P - September 2005
Prevent Electrostatic Discharge
Removal and Insertion Under Power
Be sure that power is removed or the area is nonhazardous before proceeding.
Repeated electrical arcing causes excessive wear to contacts on both the
module and its mating connector. Worn contacts may create electrical
resistance that can affect module operation.
ATTENTION
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.
• Use a static-safe workstation, if available.
• Store the equipment in appropriate static-safe packaging
when not in use.
WARNING
When you insert or remove the module while backplane power
is on, an electrical arc can occur. This could cause an explosion
in hazardous location installations.