Power Supply - Unitronics Vision V130-TR34 Installation Manual

Vision™PLC+HMI
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

The controller requires an external 24VDC power supply.
 The power supply must include double insulation. Outputs must be rated as
SELV/PELV/Class2/Limited Power.
 Use separate wires to connect the functional
earth line (pin 3) and the 0V line (pin 2) to the
system earth ground.
 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 PLC+HMI
To maximize system performance, avoid electromagnetic interference by:

Mounting the controller on a metal panel.

Connect each common and ground connection directly to the earth ground of your system.

For ground wiring uses the shortest and thickest possible wire.
Unitronics
Relay Outputs
TR34 R34

9