Ground Wiring; Cable Routing; Chassis Grounding - Johnson Controls S300 Series Hardware Installation Manual

Hardware Installation

Ground Wiring

The ground wire should be connected to the backplate by fastening the ring terminal
to any one of the 0.11" holes located at the bottom of the plate with a #6 self-tapping
screw.
To construct the ground wiring, use listed 18AWG wires.

Cable Routing

All low-level input cables, such as system data and reader cables, must be shielded
types. The cables should run in grounded conduit or at least two feet from
AC power, fluorescent lights, or other high energy sources.
I
MPORTANT
All data cables should be physically separated from power lines. If conduit is
used, do not run data cables in the same conduit as power cables or certain
door strike cables, e.g. strike voltage greater that 42V or Magnetic door locks
without EMI suppression.
All cables must conform with the following regulations:
National Electrical Code

NFPA 70

Local electrical codes

Canadian Electric Code C22.1 (installations in Canada)

Cabling should be made using good wiring practices and should be long enough to
allow service loops at their terminations in the enclosure.
Grounding Cable Shields
The grounding screws used are #6 x 1/4" self-tapping, and are provided in the
hardware installation kit.

Chassis Grounding

Proper grounding of the S300-DIN-S enclosure is essential for the protection of
electronic components against electrostatic discharge. A ground wire, 18 AWG
minimum, must be run from the dedicated ground stud inside the enclosure to the
building's electrical ground.
The dedicated ground stud is marked with the following symbol:
I
MPORTANT
Conduit ground, cold water pipes, unbrazed joints or dissimilar metals are
unacceptable in the path of either building or supplemental ground. Where
grounding is required, connect only to the proven building electrical system
ground (earth).
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This document contains confidential and proprietary information of Johnson Controls
S300-DIN-S
.
24-10239-359 Rev. C
© 2017 Johnson Controls