Rockwell Automation 1756-XXXX ControlLogix Digital I/O Modules - Manual (Page 111)

Rockwell Automation Publication 1756-UM058G-EN-P - November 2012 111
Install ControlLogix I/O Modules Chapter 6
Install the Module You can install or remove a ControlLogix I/O module while chassis power is
applied. Removal and Insertion Under Power (RIUP) provides the flexibility to
maintain modules without having to stop production.
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.
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: Although the module is designed to support RIUP, when you
remove or insert an RTB with field-side power applied, unintended machine
motion or loss of process control can occur. Exercise extreme caution when
using this feature.
ATTENTION: Prevent Electrostatic Discharge
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.