Door Open/Aux Access Supervision CK721-A Installation and Operation
D-2 24-10349-8 Rev. B
This document contains confidential and proprietary information of Johnson Controls, Inc.
© 2012 Johnson Controls, Inc.
CONFIGURING THE S300-SIO8
To link alarms five through eight to output relays five through eight, place position four of
SW1, on the SIO8 module, to ON. This links AL5 through AL8 to output relays five through
eight as shown in Table D-1.
Table D-1: Input/Output Linking, S300-SIO8, SW1 position 4 set ON
Input State for Inputs 5-8 Output Relay State for Outputs 5-8 SIO8 Reports
Secure Unenergized Secure
Alarm Energized Secure
Open Unenergized Open
Short Unenergized Short
From the SIO8 module, AL5 through AL8 are wired to the door open indicator and auxiliary
access switches as shown on the following page. AL5 and AL7 are used for auxiliary access
switches; AL6 and AL8 are used for door open indicators.
Note the location of the 150 Ohm resistors in the circ
uits, which is standard wiring used for
the S300’s four-state input points.
With respect to wiring inputs, the foll
owing diagram assumes the following:
 DOOR OPEN is closed (secure) when the door is closed.
 AUX ACCESS is normally open (secure). Contact closure initiates an auxiliary
access request.
WIRING TO THE READER MODULE
The contacts from the output relays (five through eight) on the SIO8 module are hard-wired
to the DOOR or AUX inputs on the RDR2 module. The Normally Open contact (NO) is used
for AUX inputs (see the following subsection for additional information). The Normally
Closed (NC) is used for door inputs. Ground is provided by wiring the Common (C) contacts
of the output relays together and wiring them to the GND input on the reader module.
Open or short circuit conditions at the four
-state inputs will be reported to the CK721-A by
the SIO8 module without affecting the reader module’s inputs. As a result, the relay contacts
will appear to the RDR2 module exactly as if two-state contacts were being used. Shunting
of the door alarm and generation of door open and forced door conditions will occur
normally.
The following page shows the wiring from the SIO8
output relays to the RDR2 module.
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