Vision™ OPLC™
Unitronics
7
Analog Input Wiring, Current (4 Wire)
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
Relay Outputs
Increasing Contact Life Span
To increase the life span of the relay output contacts and
protect the device from potential damage by reverse
EMF, connect:
A clamping diode in parallel with each inductive DC load
An RC snubber circuit in parallel with each
inductive AC load
Power Supply
A non-isolated power supply can be used if a 0V signal is connected to the chassis.
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.
