Table of Contents
Advertisement
11 4-Detector circuit module L840/MG 4
11.1 General
11.2 Circuit diagram
11.3 Description of the inputs and outputs
Terminal
Function
1 (+ 12 V)
Output for the supply voltage of detectors
2 (0 V)
+
XIB security bus
-
A
B
3(+) and 4(-)
Detector circuits, freely programmable
5(+) and 6(-)
7(+) and 8(-)
9(+) and10(-)
11 (+ 12 V)
Output external set
13 (+ 12 V)
Walk test output
12, 14 and 15 (0 V)
0 V
Red LED
Fault circuit display
L840/MG4
The 4-fold Detector Circuit Module L840/MG4 provides four detector circuits.
A walk test and set output are provided for control of the motion detectors.
The circuits are ideal for the connection of passive glass break detectors.
The module is supplied as a circuit board and is installed in enclosure
SAD/GUP or SAD/GAP. A maximum of up to 16 circuit modules L840/MG4
can be managed by the panel. Regarding the number of detector circuit
modules L240/MG2 or L840/MG4 and bus motion detector modules, it is
important to observe that the total number of detector circuits does not
exceed 80 (incl. the 10 circuits for the panel).
Note: Only detector circuit modules with firmware version V2.5 or higher can
be connected to the intrusion alarm panel (see label on the processor).
Jumper for
panel tamper
contact
Panel tamper
contact with
spring
The plug-in jumper LK1 is used for bypassing the panel tamper during
commissioning.
LK1 must be removed again after commissioning.
Description
Protected by fuse F1 with 100 mA
Supply voltage + 12 V
0 V
Data line A
Data line B
Every detector group in the normal state must be
terminated with 2.7 kΩ on the last detector. A detector
group, which is not used, must be terminated directly on
the module with 2.7 kΩ.
For control of an alarm memory of a motion detector the
+12 V switches via a resistor of 820 Ω with an externally
set intrusion alarm panel.
For control of the walk test of a motion detector the + 12 V
switches via a resistor of 820 Ω with a walk test.
0 V potential
At least one detector group faulty
ABB
L840/MG4
+
+ -
+ - + - + - + -
1
2
+
-
A
B
3
4
5
6
7
8
9 10 11 12 13 14 15
Circuits
External Bus (XIB)
ON
Address
1 2 3 4 5
DIP switch
LED
+
820
76
Advertisement
Table of Contents
