Johnson Controls CK721-A User Manual

CK721-A Installation and Operation S300 Expansion Enclosures
24-10349-8 Rev. B 3-17
This document contains confidential and proprietary information of Johnson Controls, Inc.
© 2012 Johnson Controls, Inc.
IMPORTANT
Observe the following precautions:
 Do not connect access control equipment to an AC power source that is
controlled by a switch.
 Do not attach the connector to the power supply until all setup has been
completed.
NOTE
Some 24 VAC transformers have an internal fuse. If the 24 VAC output is
inadvertently shorted, the internal fuse will open and AC power will not
reach the CK720 power supply.
Figure 3-16: Power Supply
S300-PS Power Supply
The power supplies in the S300 expansion enclosures are installed at the factory.
These power supplies accept 24 VAC.
J2
J1
F2
F1
J3
AC OK 5V 12V
JP4
JP1
J4
LED1 LED2 LED3
Auto
Ext
IMPORTANT
Observe the following precautions:
 A transformer must be used with each power supply.
 Do not connect a single transformer to multiple power supplies.

Johnson Controls CK721-A Specifications

General

Brand	Johnson Controls
Model	CK721-A
Category	Controller
Language	English