Rockwell Automation 1756-Lx_Mx ControlLogix Controller and Memory Board Installation Instructions - Manual (Page 16)

16 ControlLogix Controller and Memory Board
Publication 1756-IN101L-EN-P - June 2008
Preparing the Chassis
Before you install a controller:
• install a ControlLogix chassis.
• install a ControlLogix power supply.
Remove the Controller from the Chassis
You can install or remove a controller while chassis power is on and the
system is operating. If you remove the controller, all the devices owned by the
controller go to their configured fault state.
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.
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.
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