Technical Manual
FT420
– Iss 2.4
19
Designator
Type
Pin
Usage
Label
Description / Max rating
6
-
7
Zone 4 input connection
+
8
-
TB7
Removable
screw
terminal
block
1
Common Alarm Relay
N/O
Dry-contact output 30V @ 2A
2
N/C
3
C
4
Common Fault Relay
N/O
Dry-contact output 30V @ 2A
5
N/C
6
C
7
Common Disabled
Relay
N/O
Dry-contact output 30V @ 2A
8
N/C
9
C
10
Power Fail Relay
N/O
Dry-contact output 30V @ 2A
11
N/C
12
C
TB8
Removable
screw
terminal
block
1
ACF Power Output
+
24V
DC
@ 500mA
2
-
3
External Strobe Power
Output
+
24V
DC
@ 1A
4
-
TB9
Removable
screw
terminal
block
1
MDH Dry-Contact Relay
Input
+
30V @ 5A.
Connected to a non-battery backup
AC/DC power supply. The MDH circuit is
N/C.
2
-
3
MDH Dry-Contact Relay
Output
+
30V @ 5A.
Connected to the MDH circuit. .
4
-
CON1
IDC20
cable
connector
Expansion Board
Connection
N/A
Connected to up to seven expansion
boards cascaded together.
CON2
IDC16
cable
connector
Main Display Board
Connection
N/A
Connected to the Main Display Driver
board.
CON3
RJ12
socket
Main Control Board
Configuration Port
N/A
Not used