Page 7 of 17 Revision 1.1 Aug 2020
Document No. AlarmLine II Digital EN Controller Installation Instructions
Operating Modes Wiring Diagram Independent
There are two operating modes for the AlarmLine II Digital EN Controller:
1.
Independent
– This is when the AlarmLine II Digital EN Controller is used as a two zone system. When a fault or overheat condition occurs on a Digital LHD
zone, the corresponding fault or alarm output respectively is triggered. The two zones operate independently and both sets of outputs should be connected
to a fi re alarm control panel. If the zone is not required leave the 3.6kohm resistor in the zone input terminals as supplied. In this mode, the two zones can
either contain identical rated temperature Digital LHD cables or two diff erent rated temperature Digital LHD cables.
Zone 1: 250m
Zone 2: 120m
+
-
Power supply
250m
120m
- + NC NO
C
NC NO - +
C
Z
o
n
e
/S
w
it
c
h
/
IO
M
o
d
u
le
+
-
+
-
Z
o
n
e
/S
w
it
c
h
/
IO
M
o
d
u
le
Addressable
loop
Addressable
loop
+
-
RS-485
Modbus RTU
A
A
EOL
EOL
Junction Box
Junction Box
Zone 1
Zone 2
AlarmLine II Digital EN
Controller
Alarmline II Digital EN Linear Heat Detection Cable Zones
Equivalent wiring
circuit for
zone/switch/IO
monitor module
Z
o
n
e
/S
w
it
c
h
/
IO
M
o
d
u
le
Normally open
alarm contact
Normally closed
fault contact
EOL
Alarmline II Digital
EN Controller
Fault Output
Alarmline II Digital
EN Controller
Alarm Relay
The EOL and A resistor are usually provided with the fire alarm panel or zone/switch/IO module. For
more information please refer to the Fire alarm panel or addressable module installation instructions.
On each zone output group, the Fault '-' (negative terminal) and Alarm NO terminal are connected
by a soldered jumper on the Alarmline II Digital EN Controller PCB.
A
+
-
Alarmline II
Digital EN
EOL Unit