CK721-A Installation and Operation S300 Expansion Enclosures
24-10349-8 Rev. B 3-13
This document contains confidential and proprietary information of Johnson Controls, Inc.
© 2012 Johnson Controls, Inc.
IMPORTANT
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 National Electrical Code, NFPA 70,* and local
electrical codes. Cabling should be made using good wiring practices and should be
long enough to allow service loops at their terminations in the CK721-A enclosure.
*For Canadian installations, refer to the Canadian Electric Code C22.1.
Refer to Appendix C: Grounding and Connectors for details on the requirements.
The grounding screws used are #6 x 1/4” self tapping, and are provided in the
hardware installation kit.
Cabling Between Enclosures
Each S300 expansion enclosure is shipped with an installed power supply that uses
the connector cable shown in
Figure 3-17. The cable has three purposes:
It provides 12V, 5V, grounds, and data signals to the modules.
It provides data signals and the ground for enclosure to enclosure connections
as shown in
Figure 3-14.
It isolates the 5V and 12V to or from other panels as they contain their own
power supplies.
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