Detcon 440 - Manual (Page 9)

115VAC/220VAC
VDC ON/OFF
VIN
MOTHER BOARD POWER INPUT
J8
VDC +
VDC -
J2
SW4
SW1
VAC ON/OFF
F2
BATTERY
RESTORE
VIN
SW3
BATTERY ON/OFF
SWOV
BATT2
BATT1
DC POWER
SUPPLY
TO FRO
M
VSS
VIN
SW2
PS1
PS2
External
VAC
Input
External
VDC
Input
Figure 3 Power Input Schematic
4.2.3 Serial Connection From Model 440 Controller
The serial connection from the Model 440 Controller should be terminated at the RS-485 input terminal of
the Model 440-RD motherboard PCB. See Figure 4. If applicable, the shield wire can be terminated at the
RS-485 connector labeled JP1 ‘SHLD TO GND’ on the motherboard PCB.
Model 440-RD Operator Manual Rev. 1.0.2 Page 5 of 14