Keri Systems SB-293 - Manual (Page 50)

Technical Reference Manual – PXL-250 and SB-293 Keri Systems, Inc.
Page 50 P/N: 01836-004 Revision 5.5
9.6 TB-3 – Alarm Relay Connection
The Alarm Relay is a Form C relay that provides an output to trigger an audible signal
(or a silent alarm) whenever the door is put into an alarm state (i.e. the door is forced
open). It is also used to trigger an audible signal (or a silent alarm) whenever the door
is held open too long (exceeding the Open Time set within the Doors access control
program). Depending upon the type of alarm being installed and your application,
your alarm may require a normally closed/common connection, a normally open/
common connection, or a normally closed/common/normally open connection. Every
application requires the common lead connection. Refer to the Alarm Relay output
section starting on page 36 for more information on Alarm relay outputs and output
devices.
NOTE: Default alarm annunciation sets this relay to annunciate both Door Forced
and Door Held Open alarms for the A-door. The enhanced alarm annunciation feature
(configured in the Doors program) allows for separate annunciation of Door Forced
and Door Held Open alarms. The A-door Door Forced alarm can be enabled at this
relay or disabled. The A-door Door Held Open alarm can be left to this relay,
disabled, or routed to a relay on an SB-293 Satellite board. Please refer to the Wiring
Connections – SB-293 section starting on page 71 for information on how to connect
these enhanced alarm annunciation outputs.
For a typical alarm relay installation, refer to Table 11 and Figure 9-9 on page 51 and
make the following wiring and transorb connections to attach the alarm relay.
Table 11: Alarm Output
Relay Connections
TB-3 Description
Pin 4 Normally-Open
Pin 5 Common
Pin 6 Normally-Closed