Vision™
Unitronics
5
Power Supply
The controller requires either an external 12 or 24VDC power supply.
Note: Photo is for illustration purposes only.
1. The power supply must include double insulation. Outputs must be rated as
SELV/PELV/Class 2/Limited Power.
2. Use separate wires to connect the functional
earth terminal and the 0V terminal to the
system earth ground.
3. Install an external circuit breaker. Guard
against short-circuiting in external wiring.
4. Double-check all wiring before turning
on the power supply.
5.
Do not connect either the ‘Neutral’ or ‘Line’
signal of the 110/220VAC to device’s 0V pin.
6. 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 use the shortest and thickest possible wire.
Communication Ports
The controller comprises a USB port, 1 RS232/RS485 serial port and an Ethernet port.
The user may order and install one or both of the following modules:
An additional port (Port 2).
Available types: RS232/RS485 isolated/non-isolated
A CANbus port
For the most updated information regarding ports and their installation, please refer to the
Technical Library at www.unitronics.com.
Turn off power before making communications connections.
Caution
Always use the appropriate port adapters.
The USB port may be used for programming, OS download, and PC access.
Note that
COM port 1 function is suspended when this port is physically connected to a PC
.
The serial port type is RJ-11 and may be set to either RS232 or RS485 via DIP switch, in accordance
with the table shown below.
Use RS232 to download programs from a PC, and to communicate with serial devices and
applications, such as SCADA.
Use RS485 to create a multi-drop network containing up to 32 devices.