Install Instruc Universal I/O Chassis Owner manual

Universal I/O Chassis6
Publication 1771–5.60 – May 1999
Ground the Chassis
This I/O chassis Has grounding stud(s) located
1771-A2BSS
1771-A3B1SS
ATTENTION: To prevent ground loops from
occurring, use only one grounding stud when
grounding your equipment.
Important: Use the following information, along with the
installation manual for your programmable controller to
ground the I/O chassis and your I/O modules.
Chassis Ground Single-point Grounding
I/O chassis side plate
star washer
nut with captive washer
ground lug
1
ground lug
nut with captive washer
W
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grounding stud, place a star washer under the first lug, then
place a nut with captive lock washer on top of each ground lug.
grounding stud
1
Use the cup washer if crimp-on lugs are not used.
#10 thread-forming screw
external-tooth washers
19923
ATTENTION: Use single-point grounding for
extended-local I/O systems. The systems must be
grounded properly for proper performance.