Vision™ OPLC™
Unitronics
7
Analog input wiring, voltage
Shields should be connected at the signal’s source.
The 0V signal of the analog input must be connected to the controller’s 0V.
npn Outputs
Power Supply
The controller requires an external 24VDC power supply.
A non-isolated power supply can be used if a 0V signal is connected to the chassis.
You must use an external circuit protection device.
Install an external circuit breaker. Guard against short-
circuiting in external wiring.
Double-check all wiring before turning on the power
supply.
Do not connect either the ‘Neutral or ‘Line’ signal of the
110/220VAC to device’s 0V pin.
In the event of voltage fluctuations or non-conformity to
voltage power supply specifications, connect the device
to a regulated power supply.
Earthing the Power Supply
To maximize system performance, avoid electromagnetic interference by:
Mounting the controller on a metal panel.
Earthing the controller’s power supply: connect one end of a 14 AWG wire to the chassis
signal; connect the other end to the panel.
Note: If possible, the wire used to earth the power supply should not exceed 10 cm in
length. However, it is recommended to earth the controller in all cases.
