IO-AI4-AO2
I / O E x p a n s i o n M o d u l e
1 1 / 0 0
4
Unitronics Industrial Automation Systems
Connecting Expansion Modules
An adapter provides the interface between the OPLC and an expansion module. To connect the I/O module to
the adapter or to another module:
1
Push the module-to-module connector into the port located on the right side of the device.
Note that there is a protective cap provided with the adapter. This cap covers the port of the
final
I/O module in the system.
To avoid damaging the system, do not connect or disconnect the device when the
power is on.
Component identification
1 Module-to-module
connector
2 Protective
cap
1
2
Wiring
Wire Size
Use 26-12 AWG wire (0.13 mm
2
–3.31 mm
2
) for all wiring purposes.
Wiring Considerations
Note that the adapter, I/O signals, and analog outputs’ power supply must be connected to the same
0V signal.
Note that the COM signals of each I/O are internally connected to the module’s 0V.
Do not use tin, solder or any other substance on the stripped wire that might cause the wire strand
to break.
We recommend that you use crimp terminals for wiring.
Install at maximum distance from high-voltage cables and power equipment.
General Wiring Procedures
1
Strip the wire to a length of 7±0.5mm (0.250–0.300 inches).
2
Unscrew the terminal to its widest position before inserting a wire.
3
Insert the wire completely into the terminal to ensure that a proper
connection can be made.
4
Tighten enough to keep the wire from pulling free.
To avoid damaging the wire, do not exceed a maximum torque of 0.5 N·m (5 kgf·m).
Do not touch live wires.
Double-check all the wiring before turning on the power supply.
I/O Wiring
Input or output cables should not be run through the same multi-core cable or share the same wire.
Allow for voltage drop and noise interference with input/output lines used over an extended distance.
Use wire that is properly sized for the load.
