Setup guide

Dedicated Micros ©2007
20
BX2
Connecting alarms and relays
The unit supports twenty one alarms and six relays in total. The relays are divided between the 9 Way D-Type
(AUX RELAYS) and the screw terminal (R1 / R2). Dry contact alarms can be wired directly to the alarm connection
on the back of the BX2. There are 21 alarm inputs, 20 via the 25 way D connection and one using the Direct
Connector (5&6). The Alarm connections are as follows.
Al
arm
I
nputs
Pin
1 - 20
21 - 25
1
13
14
25
Connection
1 - 20
Ground
Terminal
5&6
Alarm Input
Direct Connection
5 6
Direct R2 R1
- +
3 4 1 2
All of the relays are congurable within the menus. R4, R5 and R6 can be congured to be triggered
automatically on receipt of any alarm, refer to the Alarm Zone Conguration menu. R1, R2 and R3 can be
congured to be automatically triggered; on receipt of an alarm, notication of activity and notication of
camera failure respectively.
R
ela
y
s
Relay
R1
R2
Pin
1&2
3&4
Configurable Global Function
Global Relay
Global VMD
Relay
R3
R4
R5
R6
Aux Relays
Pin
1&6
2&7
3&8
4&9
Configurable Global Function
Global Camera Fail
Reserved
Reserved
Reserved
5 6
DirectR2R1
- +
3 41 2
1
5
6 9
End of line circuitry
Any of the on-board alarms can be congured as End Of Line, the following describes the EOL tamper alarms
circuitry needed when EOL has been enabled. There should be two resistive values within the tamper alarm
circuitry; these must be located inside the alarm device (furthest point from the unit). The alarm state could be
Normally Open or Normally closed however the tamper states are the same for both settings.
5K6
1K2
Normally Open, the resistive value is 6.8KΩ (1.2K + 5.6K).