Din-Rail Mounting; I/O Modules; Wiring: General - Unitronics M90 OPLC Installation Manual

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DIN-rail mounting

1. Snap the controller onto the DIN rail
as shown in the figure to the right.
2. When properly mounted, the controller
is squarely situated on the DIN-rail as
shown in the figure to the right.

I/O Modules

The controllers offer an on-board I/O configuration that differs according to the controller model; I/O
wiring diagrams are in the controller's technical specification sheet.
Additional I/Os may be integrated into the system via I/O Expansion Modules that you plug into the
controller's I/O expansion port. Note that the relevant wiring diagrams are in the module's technical
specification sheet, and that an I/O adapter is required for most modules.

Wiring: General

 Do not touch live wires.
 Unused pins should not be connected. Ignoring this directive may damage the device.
 To avoid damaging the wire, do not exceed a maximum torque of 0.5 N·m (5 kgf·cm).
Caution  Do not use tin, solder, or any substance on stripped wire that might cause the wire
strand to break.
Use crimp terminals for wiring; use 26-14 AWG wire (0.13 mm
1. Strip the wire to a length of 7±0.5mm (0.250–0.300").
2. Unscrew the terminal to its widest position before inserting a wire.
3. Insert the wire completely into the terminal to ensure a proper connection.
4. Tighten enough to keep the wire from pulling free.
4
2 –2.08 mm 2
).
M90/91™ OPLC™
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