Detcon DA-1 - Manual (Page 5)

7.0 Wiring Diagram DA-1
All unused inputs should have a single wire connected from one of the digital source terminals to the + input
of that channel, with no signal developing resistor.
Always remove power before plugging or unplugging the device. Damage can occur to the unit if it is pow-
ered during servicing or replacement.
Detcon Model DA-1 PG.5
24VDC to
next device
Fault
Power
Out
Power
In
COM
NO/NC
24VDC from
previous device
A
B
A
B
1
2
3
4
RS-485
Digital Source
RS-485
RS-485 to
next device A
B
A
B
RS-485 from
previous device
CH1 CH2 CH3 CH4
NC
Emergency Pull Station
Typical
Digital
Input
Typical
4-20mA Analog
Input + mA
– mA
Flame Detector