Technical Manual
FT420
– Iss 2.4
25
2.6 Optional Relay Expansion Board SUB885
The Relay Expansion board provides 8 Programmable Dry Contact Relay Outputs. Each relay output
can be configured to activate from an alarm in a single zone or all zones. This configuration can be
performed via the PC Configuration software. Refer to section 4.3.4 page 64 for details. The board
layout is shown in Figure 6.
The Expansion Board has to be connected to the Main Control Board or another expansion board via
ribbon cable. The board address must be selected using the DIP switch SW1 as per Table 13.
Figure 6 Relay Expansion Board Layout
The board jumper settings and connections are listed on Table 13 and Table 14
Table 13 Relay Expansion Board Jumper Settings
Designator
Description
Jumper
Status
Function
Factory Default
JP9
Not used
Out
Not used
Out
JP1, JP2,
JP3, JP4,
JP5, JP6,
JP7, JP8
Select N/O or
N/C for relay
output 1- 8, 3A.
1-2
Normally Closed
Set as the application specified.
2-3
Normally Open
SW1
Select expansion
board address.
Only one bit can
be turned ON.
1-7
Set address from 1 to 7.
Based on the system
configurations.
8
Disable the expansion board.
