Rockwell Automation 1756-DHRIO_DHRIOXT ControlLogix Data Highway Plus-Remote I/O Communication Interface Module - Manual (Page 19)

Rockwell Automation Publication 1756-UM514C-EN-P - June 2014 19
About the Module Chapter 1
Prevent Electrostatic
Discharge The Data Highway Plus module is sensitive to electrostatic discharge.
Removal and Insertion Under
Power You can install or remove the module while chassis power is applied if you
observe the following precautions.
Repeated electrical arcing causes excessive wear to contacts on the module and its
mating connector. Worn contacts can 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. Be sure that power is removed or the
area is nonhazardous before proceeding.