Unitronics IO-D16A3-RO16 Manuale utente
Unitronics 1
IO-D16A3-RO16 XL I/O Expansion Module
Installation Guide
The Unitronics®IO-D16A3-RO16 is an XL I/O expansion module for use in conjunction with specific Unitronics controllers.
XL modules comprise enhanced I/O configurations and detachable I/O connectors. A local or remote I/O adapter module is
required to interface between the expansion module and the PLC controller and provide power to the expansion modules in the
system.
The I/O expansion module provides:
16 digital inputs, including 2 HSC
3 analog inputs
16 relay outputs
For additional information and technical specifications, visit the Technical Library at 0Hwww.unitronics.com.
Component Identification
1 Module-to-module connector
2 Status indicator
3 Output connectors
4 Output power supply connection points
5 I/O address labels (provided with module)
6 Input/output status indicators
7 Module-to-module connector port
8 Input connectors
Failure to comply with appropriate safety guidelines can
cause severe personal injury or damage to property.
Only qualified personnel should service and operate this
device.
When power is turned on, do not connect or disconnect the
device to avoid damaging the system.
8
7
4
1
26
3
5
5
Mounting the Module Connecting Modules
To mount the module on a 35mm DIN-rail, snap it squarely onto
the DIN-rail, as shown below.
To connect a module to the adapter or expansion module:
1.Push the module-to-module connector (1) into the port
(2) located on the right side of the module or adapter.
2.Push the protective cap (3) into the connector port of
the last module. The cap is supplied with the adapter.
Install the module in an upright position.
To ensure good ventilation, leave at least 50mm between the
device and all other objects above or below it.
Install at a maximum distance from high-voltage cables and
power equipment.
Unitronics IO-D16A3-RO16 2
Wiring Considerations
Install an external circuit breaker. Guard against
short-circuiting in external wiring.
Do not connect unused pins. Ignoring this directive
may damage the device.
To avoid damaging wires, do not exceed a maximum
torque of 0.5 Nm (5 kgf·cm).
Use crimp terminals for wiring and use 26-12 AWG wire
(0.13mm2–3.31mm2).
Strip the wire to a length of 7±0.5mm (0.250–0.300”).
Do not route input cables together with output cables
through the same multi-core cable or wire.
Use wire that is correctly sized for the load. Allow for
voltage drop and noise interference with extended input
lines.
Note: Connect the adapter 0V and the I/O 0V to the same line.
Do not use tin, solder, or any substance on stripped
wire that might cause the wire strand to break.
Daisy Chaining
To facilitate wiring, you can wire the following pins in series (daisy chain). Use both pins provided for this purpose.
Input connector pin: n/p. Output connector pins: +V, 0V, C0, C1.
Ensure that the total current drain on any single line does not exceed 10A. If a specific pin requires more than 10A, connect it with
a separate wire. The following diagram demonstrates the wiring options:
Wiring Inputs
The following diagram shows the input connectors with pin numbers and corresponding LED numbers.
Note: Where input numbers are stated, the intention is the LED number.
15 16 17 18 19 20 21 22 23 24 25 26 27 28
14131211109
8
765
4
3
2
1n/p RG
n/p76543210LED#
AI1 AI0AI2
14131211109815
LED#
Pin#
Pin#
RG
Wiring Digital Inputs
Inputs may be wired as either pnp (positive logic) or npn (negative logic).
Inputs 4 and 6 can function as high-speed counters, frequency measurers, or general purpose digital inputs (set in software).
Inputs 5 and 7 can function either as counter reset inputs or general purpose digital inputs (set in software).
For information on connecting RG pins, refer to Connecting RG Pins.
pnp (positive logic) inputs 0-7 pnp (positive logic) inputs 8-15
npn (negative logic) inputs 0-7 npn (negative logic) inputs 8-15
I8
I9
I10
I11
I12
I13
I14
I15
n/p
RG
Unitronics IO-D16A3-RO16 3
Wiring Analog Inputs
The following diagram shows the 2-wire and 4-wire current connection.
Use shielded twisted pair cable.
Connect shields to the earth ground at the signal’s source.
Connecting RG Pins
For correct operation of digital and analog inputs and for EMI immunity, connect the RG pin of all the expansion modules
containing RG signals to the adapter module 0V signal.
The overall length of the wire connecting the RG pins to the adapter 0V signal must be less than 3 meters.
Connect the RG pins in series (daisy chain). To facilitate this, use both the RG pins.
Wiring Outputs
The following diagram shows the output connectors with pin numbers and corresponding LED numbers.
Note: Where output numbers are stated, the intention is the LED number.
Wiring the Output Power Supply
A non-isolated power supply can be used provided that the 0V signal is connected to the earth ground.
Do not connect the neutral or line signal of the 110/220VAC to the 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.
Wiring Relay Outputs
Outputs 0–7 share the common signal C0 and outputs 8-15 share the common signal C1.
Relay Outputs 0-7
Relay Outputs 8-15
Unitronics IO-D16A3-RO16 4
Increasing Contact Life Span
To increase the life span of the relay contacts and protect against potential damage by reverse EMF, connect one of the following:
A clamping diode in parallel with each inductive DC load.
An RC snubber circuit in parallel with each inductive AC load.
Addressing Inputs and Outputs on Expansion Modules
The PLC software assigns a unique address to each input and output in the system. The address comprises a letter and a
number. The letter indicates whether the I/O is an input (I) or output (O) and the number indicates its location (both the location of
the expansion module in the system and the I/O position on the module).
The I/O addressing scheme depends on the adapter type and location. Adapters may be local or remote. Local adapters must be
located close to the PLC. Remote adapters are connected to the PLC via CANbus. In addition, Unitronics offers I/O modules that
contain a built-in adapter. Available adapter options may be found at 1Hwww.unitronics.com.
The following example is based on a local EX-A1 adapter and may be used to calculate the number used by the PLC for inputs
and outputs: 32 + 16x + y
Where: X is the number representing the module location (0-7) and Y is the number of the input or output on the module (0-15).
The module is supplied with a set of labels – select the label appropriate to the position of the module. For more information, refer
to the Configuring I/O Expansion Modules topic in the on-line help of the software supplied with the controller.
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 withdrawany of the forgoing from the market. All information in this document is provided "as is" without warranty of any kind, eitherexpressed 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 forany special, incidental, indirect or consequential damages of any kind, or any damages whatsoeverarising out of or in connection with the use orperformance of this information. The tradenames,
trademarks, logos and service marks presented in this document, including theirdesign, are the property of Unitronics (1989) (R"G) Ltd. or other third parties and you are not permitted to use themwithout the prior written consent of
Unitronics or such third party as may own them.
DIG-XL-D16R16 03-09
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