Rockwell Automation 1756-RIO ControlLogix Remote I/O (RIO) Communication Interface Module Installation Instr - Manual (Page 11)

ControlLogix Remote I/O (RIO) Module 11
Rockwell Automation Publication 1756-IN610B-EN-P - November 2010
Power Requirements
This module receives power from the 1756-chassis power supply and requires
two sources of power from the ControlLogix backplane.
• 450 mA at 5.1V DC
• 5 mA at 24V DC
Add these current/power values (2.5 W) to the requirements of all other
modules in the chassis to prevent overloading the power supply.
Install the Module
You can install or remove the module while chassis power is applied if you
observe these precautions.
For this installation, we will assume chassis power is off.
WARNING: When you insert or remove the module while
backplane power is on, an electrical arc can occur. If you connect
or disconnect the communications cable with power applied to
this module or any device on the network, 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.