C420 Installation Manual
15
3.5 ML420 OPTIONAL MODULE
The ML420 optional module allows the control panel to increase the number of detection circuits. Each module adds 4 conventional
detection circuits and 4 zone relay outputs. The control panel can be equipped with up to 4 ML420 modules connected in series.
The terminals and connectors of this module are described below.
Figure 6 – ML420 module
ML420 connectors
JP1
This connector is used to connect the module to the MCC module or to the previous ML420
JP3
This connector is used to connect the module to the next ML420
ML420 terminals
RELAY 1 CC
Zone 5/9/13/17 alarm relay dry contact output (1)
NO or NC selected via JP6
RELAY 1 PC
Zone 5/9/13/17 alarm relay dry contact output (1)
RELAY 2 CC
Zone 6/10/14/18 alarm relay dry contact output (1)
NO or NC selected via JP7
RELAY 2 PC
Zone 6/10/14/18 alarm relay dry contact output (1)
RELAY 3 CC
Zone 7/11/15/19 alarm relay dry contact output (1)
NO or NC selected via JP8
RELAY 3 PC
Zone 7/11/15/19 alarm relay dry contact output (1)
RELAY 4 CC
Zone 8/12/16/20 alarm relay dry contact output (1)
NO or NC selected via JP9
RELAY 4 PC
Zone 8/12/16/20 alarm relay dry contact output (1)
LINE 1 +
Positive output for detection circuit 5/9/13/17 (1)
LINE 1 -
Negative output for detection circuit 5/9/13/17 (1)
LINE 2 +
Positive output for detection circuit 6/10/14/18 (1)
LINE 2 -
Negative output for detection circuit 6/10/14/18 (1)
LINE 3 +
Positive output for detection circuit 7/11/15/19 (1)
LINE 3 -
Negative output for detection circuit 7/11/15/19 (1)
LINE 4 +
Positive output for detection circuit 8/12/16/20 (1)
LINE 4 -
Negative output for detection circuit 8/12/16/20 (1)
(1) The circuit number and relay number depend on the number of installed modules.
ML420 jumpers
JP6
1-2
Zone 5/9/13/17 alarm relay (1) – normally closed dry contact
2-3
Zone 5/9/13/17 alarm relay (1) – normally open dry contact (2)
JP7
1-2
Zone 6/10/14/18 alarm relay (1) – normally closed dry contact
2-3
Zone 6/10/14/18 alarm relay (1) – normally open dry contact (2)
JP8
1-2
Zone 7/11/15/19 alarm relay (1) – normally closed dry contact
2-3
Zone 7/11/15/19 alarm relay (1) – normally open dry contact (2)
JP9
1-2
Zone 8/12/16/20 alarm relay (1) – normally closed dry contact
2-3
Zone 8/12/16/20 alarm relay (1) – normally open dry contact (2)
(1) Circuit number and relay number depend on the number of installed modules.
(2) Default setting.
3
2
1
3
2
1
3
2
1
3
2
1
RELAY1
CC PC
RELAY2
CC PC
RELAY3
CC PC
RELAY4
CC PC
LINE 1
+ -
LINE 2
+ -
LINE 3
+ -
LINE 4
+ -
H1
H2
H3
JP1
JP3
