Rockwell Automation 1756-xxxx ControlLogix Chassis and Power Supplies Installation Instructions - Manual (Page 42)

42 Rockwell Automation Publication 1756-IN005C-EN-P - March 2014
Chapter 2 Install Chassis and Redundant Power Supplies
Install the Chassis and
Chassis Adapter After planning your system, use the instructions below to properly install your
chassis and 1756-PSCA2 chassis adapter.
1. Drill holes in the back panel of the enclosure for the chassis mounting tabs.
See the Spacing Requirements on page 35 for assistance in hole placement.
2. Scrape paint off the back panel for an electrical connection between the
chassis and back panel.
3. Hold the chassis in place against the holes.
4. Install the hardware for the top mounting tabs and tighten.
See Parts Required on page 33 for more information.
ATTENTION: Do not drill holes above an installed chassis. Metal chips from
drilling can damage the backplane and cause intermittent operation.
IMPORTANT Chassis are intended to be mounted only horizontally. Do not mount vertically.
ATTENTION: If the chassis mounting tabs do not lay flat before the screws are
tightened, use additional washers as shims so the chassis is not warped by
tightening the screws.
Warping a chassis can damage the backplane and cause intermittent operation.
20289-M