IM-783 Page 11
Figure 3. Remote I/O Panel General Wiring Diagram
Transformer
24 VAC
Ground
Primary
Power Supply
120 VAC or 208/240 VAC
(depending on model)
Legend
Factory wiring
Field wiring
Field wiring terminal
3
rd
Remote I/O Module
Low Voltage Terminals-Brown
High Voltage Terminals-Orange
1
st
Remote I/O Module
Low Voltage Terminals-Brown
High Voltage Terminals-Orange
2
nd
Remote I/O Module
Low Voltage Terminals-Brown
High Voltage Terminals-Orange
4
th
Remote I/O Module
Low Voltage Terminals-Brown
High Voltage Terminals-Orange
If the module’s relay outputs will be
controlling high voltage (230 Volt
maximum) devices, bring high
voltage control wires to modules 3
and 4 through the top of the panel.
If the module’s relay outputs will be
controlling high voltage (230 Volt
maximum) devices, bring high voltage
control wires to modules 1 and 2
through the bottom of the panel.
Bring low
voltage
control
wires and
LonWorks
network
cable in
through the
sides of the
panel.
Bring low
voltage
control
wires and
LonWorks
network
cable in
through the
sides of the
panel.
1 2 23 22
1 2 23 22
22 23 2 1
22 23 2 1
Notes
1. Depending on the model ordered,
the panel will contain from 1 to 4
modules. Additional modules may be
purchased separately and added to a
panel in the field.
2. See the supervisory controller
installation manual (e.g. IM-781 for
the Chiller System Manager) for
wiring diagrams of the control wiring.
Blue
Yellow
Blue
Yellow
Yellow
Blue
Yellow
Blue
