Allen-Bradley 1756-L63XT, User Manual

Page: 44 / 212

44 Rockwell Automation Publication 1756-UM001O-EN-P - October 2014
Chapter 2 Install the 1756-L6x Controller
Remove the Controller
from the Chassis You can remove a controller while chassis power is on and the system is operating.
The devices that are owned by the controller go to their configured fault state if
you remove the controller.
Complete these steps to remove the controller from the chassis.
1. Press the locking tabs on the top and bottom of the controller.
2. Slide the controller out of the chassis.
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 controller
and its mating connector in the chassis. Worn contacts may create electrical
resistance that can affect controller operation.
1
2
1