UniStream
®
PLC
12
Unitronics
Wiring the Relay Outputs (USC-xx-R38)
▪
To avoid risk of fire or property damage, always use a limited current source or
connect a current limiting device in series with the relay contacts
The relay outputs are arranged in two
isolated groups:
O0-O5 share the common return CM3.
O6-O11 share the common return CM4.
Increasing Contact Life Span
To increase the life span of the relay contacts
and protect the controller from potential
damage by reverse EMF, connect:
▪
a clamping diode in parallel with each
inductive DC load,
▪
a RC snubber circuit in parallel with each
inductive AC load
v
Wiring the Source Transistor Outputs (USC-xx-T42)
Output’s power supply
The use of any of the outputs requires
an external 24VDC power supply as
shown in the accompanying figure.
Outputs
Connect the +VO and 0VO terminals as
shown in the accompanying figure.
O0-O15 share common return 0VO.
Installing Uni-
I/O™ & Uni
-
COM™
Modules
Refer to the Installation Guides provided with these modules.
▪
Turn off system power before connecting or disconnecting any modules or devices.
▪
Use proper precautions to prevent Electro-Static Discharge (ESD).
Uninstalling the Controller
1. Disconnect the power supply.
2. Remove all wiring and disconnect any installed devices
according to the device’s
installation guide.
3. Unscrew and remove the mounting brackets, taking care to support the device to
prevent it from falling during this procedure.
The information in this document reflects products at the date of printing. Unitronics reserves the right, subject to all applicable laws, at any time, at its sole
discretion, and without notice, to discontinue or change the features, designs, materials and other specifications of its products, and to either permanently or
temporarily withdraw any of the forgoing from the market.
All information in this document is provided "as is" without warranty of any kind, either expressed or implied, including but not limited to any implied
warranties of merchantability, fitness for a particular purpose, or non-infringement. Unitronics assumes no responsibility for errors or omissions in the
information presented in this document. In no event shall Unitronics be liable for any special, incidental, indirect or consequential damages of any kind, or
any damages whatsoever arising out of or in connection with the use or performance of this information.
The tradenames, trademarks, logos and service marks presented in this document, including their design, are the property of Unitronics (1989) (R"G) Ltd. or
other third parties and you are not permitted to use them without the prior written consent of Unitronics or such third party as may own them
DOC32003-B0 REV. B01 11/21
