Page 12 IM-783
Remote I/O Modules
Mounting of Remote I/O Modules
Each remote I/O module mounts on a DIN rail. The modules are snapped in place on the rail. To remove a module from a
rail, slip a flat-head screwdriver into the stirrup located on the base of the module (center tab under the brown terminals).
Gently pull the stirrup away from the housing while lifting up on the module.
General Control Wiring of Remote I/O Modules
The remote I/O panel comes with the 24 VAC power wires supplied from the transformer to the modules. All control wiring
is field supplied in accordance with the CSM supervisory controller Installation Manual with which the panel will be used. All
wiring must comply with applicable electrical codes and ordinances.
Note:
Terminals on the remote I/O module accept wire from 20 AWG (0.5 mm
2
) to 14 AWG (2.5 mm
2
).
Each remote I/O module is equipped with four 230 VAC, digital outputs (i.e. relays). Two are normally open (N.O.) and two
are changeover (C.O.) relays. All four normally open contacts are rated for 6 amps continuous current while the normally
closed contacts of the two C.O. relays are rated for 1 amp continuous current. These high-voltage relay terminals are the
orange touchless terminals on the module (separated from the brown low-voltage terminals). The modules are mounted so that
the orange high-voltage terminals are directed toward the top and bottom of the remote I/O panel to keep high-voltage wiring
separated from low-voltage wiring (see Figure 3).
If you are wiring to remote I/O modules mounted in the remote I/O panel and high-voltage devices are being switched, run the
wiring from these devices into the top or bottom of the panel. Connect these wires directly into the touchless orange relay
terminals on the high voltage side of the module. Wire the low-voltage and communication wiring into the sides of the panel
and connect these wires directly into the brown terminals on the low-voltage side of the modules.
If these relays are used for control of high-voltage devices, the wiring must be run separately from any low-voltage wiring. Do
not mix relay control of high voltage and low voltage devices on the same module.
!
WARNING
Electric shock hazard.
Can cause personal injury or equipment damage.
If the remote I/O module relay outputs will be switching higher voltage devices, higher voltage wiring must be run
separately from low voltage wiring.
Do not mix low-voltage and higher-voltage wires on the relay side (orange terminals) of a remote I/O module.
Note:
Local wiring guidelines may take precedence over recommendations provided in these instructions.
