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

S300-DIN-L

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.
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
CAUTION
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-L 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:
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
CAUTION
building electrical system ground (earth).
24-10239-340 Rev. B
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© 2017 Johnson Control
Hardware Installation
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