Technical Reference Manual – SB-293
Printing Date
01838-002 Rev. 3.0
July-1998
Page 21 of 32
TB-10 – Door Held Open Alarm Relay Connection
These instructions apply if the enhanced alarm out annunciation feature (in the Doors32™ software)
has configured these outputs to door held open annunciation. Otherwise skip to the TB10 – General
Purpose Output Relay Connections section on page 22.
The Door Held Open 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; whenever the door is held open
too long (exceeding the Open Time set within the
Doors32™
access control program). General-
purpose output four can be configured to be the door held open alarm for the A-door on the PXL-250
controller. General-purpose output 3 can be configured to be the door held open alarm for the B-door
on the SB-293 satellite board. Please refer to the Door Held Open Alarm Relay output section on
page 14 for more information on Alarm relay outputs and output devices.
For a typical door held open alarm relay installation for the A-door, refer to Table 8 and Figure 13 and
make the following wiring and transorb connections to attach the door held open alarm relay.
For a typical door held open alarm relay installation for the B-door, refer to Table 9 on page 22 and
Figure 14 on page 22 and make the following wiring and transorb connections to attach the door held
open alarm relay.
TB-10 – Pin . . .
Description
Pin 4
normally-open – GPO 4
Pin 5
common
Pin 6
normally-closed – GPO 4
Table 8 – Door Held Open Alarm Output Relay Connections - A-Door
Figure 13 – Door Held Open Alarm Relay Output Connections - A-Door
TB10
1
2
3
4
5
6
Ground/Common
Normally-Open
Ground/Common to TB-10, Pin 5
Normally-Closed Signal
to TB-10, Pin 6
Normally-Closed
Normally-Open Signal to TB-10, Pin 4
12 VDC
Power
+
-
-NO CONNECTION-
SB-293 DHO
ALARM RELAY
1.5KE39C Transorb for Transient Suppression
ALARM
+
-
GPO 4
WIRING CONNECTIONS
