Rockwell Automation 1756-HSC ControlLogix High Speed Counter Module - Manual (Page 41)

Rockwell Automation Publication 1756-UM007C-EN-P - November 2011
Install and Wire the ControlLogix High-speed Counter Module 41
Install the 1756-HSC
Module
You can install or remove the module while chassis power is applied.
1. Align the circuit board with the top and bottom chassis guides, as
shown.
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.
WARNING
When you connect or disconnect the Removable Terminal Block
(RTB) with field side power applied, 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.
Top Guide
Bottom Guide
20861-M