Technical Manual
FT420
– Iss 2.4
13
Table 3 Modules and Features
Type
Module
Feature
Qty
Description
Basic
System
Main Control
Board
SUB880
Zone Inputs
4
Compatible with the approved actuating devices.
Built-in MCP
Input
1
Connects to the panel mounted MCP. It is capable of
immediately activating the OWS evacuation, the
system controls and the fire brigade calls (if Alarm
Signalling equipment is installed).
MDH Relay
Output
1
N/C Dry-contact not monitored 30V @ 5A.
Due to power supply/battery requirements, a separate
power supply may be required.
ACF Output
1
Supervised 24V
DC
output with independent disable
control.
24V
DC
@ 500 mA.
Control A/C shutdown relay or other external
equipment.
Separate manual control to disable the ACF output.
External
Strobe
Output
1
Supervised 24V output with a manual disablement
control.
24V
DC
@ 1 A.
Control the external fire brigade strobes.
Separate manual control to disable external strobe
output.
Alarm
Devices
Output
1
Supervised 24V output, 24V
DC
@ 2 A
(JP1 & JP2
fitted)
to control electronic sounders or
Supervised speaker circuit, <100V RMS, < 5A
(JP1 &
JP2 not fitted)
to control main OWS speaker circuit.
Separate manual control to disable all alarm devices.
Common
Alarm Relay
Output
1
Dry-contact, 30V @ 2A.
Used normally to connect the CIE to Alarm Signalling
Equipment (ASE).
Common
Fault Relay
Output
1
Dry-contact, 30V @ 2A, Normally energised
Used normally to connect the CIE to Alarm Signalling
Equipment (ASE).
Common
Disable
Relay Output
1
Dry-contact, 30V @ 2A.
Used normally to connect the CIE to Alarm Signalling
Equipment (ASE).
Power Fail
Relay Output
1
Dry-contact, 30V @ 2A.
Activated when both the backup batteries and the
mains power supply fault are detected.
May be used when connecting the CIE to Alarm
Signalling Equipment (ASE).
Auxiliary
24
DC
V
Outputs
2
Power output, 24V
DC
, < 4A
Supply power to the expansion control boards and
OWS (if fitted).
