User manual

24 Rockwell Automation Publication 1769-UM011I-EN-P - February 2013
Chapter 2 Install the 1769-L3x Controllers
Dimensions
Ground the Wiring
This product is intended to be mounted to a well-grounded mounting surface
such as a metal panel. Additional grounding connections from the controller’s
mounting tabs or DIN rail (if used) are not required unless the mounting surface
cannot be grounded.
Refer to Allen-Bradley Industrial Automation Wiring and Grounding
Guidelines, publication 1770-4.1
, for additional information.
IMPORTANT
Compact I/O expansion cables have the same dimensions as the end caps.
Expansion cables can be used on either the right or left end. A 1769-ECR
right-end cap or 1769-ECL left-end cap terminates the end of the
communication bus.
ATTENTION: This product is grounded through the DIN rail to chassis ground.
Use zinc-plated yellow-chromate steel DIN rail to assure proper grounding. The
use of other DIN rail materials (such as aluminum or plastic) that can corrode,
oxidize, or are poor conductors, can result in improper or intermittent
grounding. Secure DIN rail to mounting surface approximately every 200 mm
(7.8 in.) and use end-anchors appropriately.
67.5
(2.68)
52.5
(2.06)
70
(2.76)
35
(1.38)
118
(4.65)
132
(5.20)
15
(.58)
52.5
(2.06)
35
(1.38)
35
(1.38)
35
(1.38)
35
(1.38)
44734
All dimensions are in mm (in.).