Johnson Controls CK721-A User Manual

CK721-A Installation and Operation S300 Expansion Enclosures
24-10349-8 Rev. B 3-37
This document contains confidential and proprietary information of Johnson Controls, Inc.
© 2012 Johnson Controls, Inc.
IMPORTANT
Observe the following precautions:
 The ZA family of components covers the complete operating range of Cardkey
Strike and Output relays in a radial leaded component suitable for field wiring
applications. Failure to provide these protection devices will limit the contact life
of the relay resulting in failed operation.
 Use a separate Class 2 transformer or power supply for door strike power. Under
no circumstances connect a door strike to the S300 enclosure power supply.
NOTE
It is the responsibility of the installing contractor to ensure that the lock
type and egress method meets the building, fire, and life safety
requirements and codes.
Door Open Detector Wiring
A door-open detector will normally be installed at each entrance controlled by a card
reader. This is an open circuit when the door is open. The S300-RDR2 terminal
provides a door-open alarm input at connectors J1 or J4 for monitoring the door
status. This alarm input is suppressed (shunted) for a selected period of time,
allowing the door to be opened and closed after access has been granted. This time
period is called the Alarm Shunt Time. If a door is opened without access being
granted, or if the door is held open beyond the alarm shunt time and the alarm signal
is not suppressed, the alarm is detected immediately.
Auxiliary Access Switch Wiring
When an auxiliary access is input at connectors J1 or J4 on the reader terminal, it
provides a means of manually allowing access or exit from the secured area. If used,
the auxiliary access input must be connected to a dry-contact normally-open switch
that is installed in the secure area. The use of the auxiliary access switch actuates the
door strike immediately and disables (shunts) the door open detector to prevent a
false alarm. It is the responsibility of the installing contractor to ensure that the lock
type and egress method meets the building, fire, and life safety requirements and
codes. This input can also be connected to the relay output of a PIR (Passive
Infra-Red) device mounted above the door allowing automatic operation.
Shunt Relay Driver Wiring
A driver is provided for connecting an external alarm shunt relay at connectors J1 or
J4 of the S300-RDR2 terminal. When a valid access occurs, the shunt relay is
energized on for the duration of time programmed at the P2000. If an external alarm
system is used, the alarm shunt will prevent the external alarm system from
sounding an alarm when a valid access occurs. To use this feature, connect a relay
with a 12 VDC coil (70 MA maximum) to pins 1 and 2. To protect the relay driver,
connect a diode (1N4148 or equivalent) across the relay coil. The diode cathode
(banded end) is connected to pin 1 and the anode to pin 2.

Johnson Controls CK721-A Specifications

General

Brand	Johnson Controls
Model	CK721-A
Category	Controller
Language	English