EX-A2X I/O Expansion Module Adapter, Isolated

EX-A2X
I/O Expansion Module Adapter, Isolated
The EX-A2X interfaces between a variety
of I/O expansion modules and specific
Unitronics’ OPLCs.
A single adapter can be connected to up
to 8 expansion modules.
The EX-A2X may either be snap-mounted
on a DIN rail, or screw-mounted onto a
mounting plate.
Component identification
1
Status indicators
2
COM port, EX-A2X to OPLC
3
Power supply connection points
4
EX-A2X to expansion module
connection port
Before using this product, it is the responsibility of the user to read and understand this document and
any accompanying documentation.
All examples and diagrams shown herein are intended to aid understanding, and do not guarantee
operation. Unitronics accepts no responsibility for actual use of this product based on these examples.
Please dispose of this product in accordance with local and national standards and regulations.
Only qualified service personnel should open this device or carry out repairs.
User safety and equipment protection guidelines
This document is intended to aid trained and competent personnel in the installation of this equipment as
defined by the European directives for machinery, low voltage, and EMC. Only a technician or engineer trained
in the local and national electrical standards should perform tasks associated with the device’s electrical wiring.
Symbols are used to highlight
information relating to the user’s
personal safety and equipment
protection throughout this document.
When these symbols appear, the
associated information must be read
carefully and understood fully.
Symbol
Caution
Meaning
Description
Danger
The identified danger causes physical
and property damage.
Warning
The identified danger can cause
physical and property damage.
Caution
Use caution.
Failure to comply with appropriate safety guidelines can result in severe personal injury or
property damage. Always exercise proper caution when working with electrical equipment.
Unitronics
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Check the user program before running it.
Do not attempt to use this device with parameters that exceed permissible levels.
Install an external circuit breaker and take appropriate safety measures against short-circuiting
in external wiring.
To avoid damaging the system, do not connect / disconnect the device when the power is on.
Environmental Considerations
Do not install in areas with: excessive or conductive dust, corrosive or flammable gas,
moisture or rain, excessive heat, regular impact shocks or excessive vibration.
Leave a minimum of 10mm space for ventilation between the top and bottom edges of the
device and the enclosure walls.
Do not place in water or let water leak onto the unit.
Do not allow debris to fall inside the unit during installation.
Mounting the Module
DIN-rail mounting
44.5mm
(1.75")
93mm
(3.66")
Snap the device onto the DIN rail as shown below; the module will be squarely situated on the DIN rail.
3.5mm
(0.137")
14mm
(0.55")
2
60mm
(2.362")
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I / O E x p a n s i o n M o d u l e Ad a p t e r , I s o l a t e d
Screw-Mounting
The following figure is not drawn to scale. Mounting screw type: either M3 or NC6-32.
85mm
(3.346")
93mm
(3.66")
5.8mm
(0.228")
4mm
(0.16")
80mm
(3.15")
68.4mm
(2.693")
4mm (x2)
(0.16")
Connecting the OPLC to the EX-A2X
Use the communication cable to connect the module’s PLC expansion port to the PLC.
Take care to connect the correct cable. The connectors of this cable are housed in yellow insulation. Note that
one end is marked To PLC and the other To Adapter; insert accordingly.
The module is supplied with a 1-meter cable, part number EXL-CAB100. Other cable lengths are also available.
Use only an original Unitronics cable and do not make any changes to it.
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Connecting Expansion Modules
An adapter provides the interface between the OPLC and an expansion module. To connect the I/O module to
the adapter or to another module:
1.
Push the module-to-module connector into the port located on the right side of the device.
Note that there is a protective cap provided with the adapter. This cap covers the port of the final
I/O module in the system.
To avoid damaging the system, do not connect or disconnect the device when the
power is on.
Component identification
1
Module-to-module
connector
2
Protective cap
1
2
Wiring
Do not touch live wires.
Unused pins should not be connected. Ignoring this directive may damage the device.
Double-check all wiring before turning on the power supply.
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.
Double-check all the wiring before turning on the power supply.
Wiring Procedures
Use crimp terminals for wiring; use 26-12AWG wire (0.13 mm 2–3.31 mm2) for all wiring purposes.
1.
Strip the wire to a length of 7±0.5mm (0.250–0.300 inches).
2.
Unscrew the terminal to its widest position before inserting a wire.
3.
Insert the wire completely into the terminal to ensure that a proper connection can be made.
4.
Tighten enough to keep the wire from pulling free.
To avoid damaging the wire, do not exceed a maximum torque of 0.5 N·m (5 kgf·cm).
Do not use tin, solder, or any other substance on stripped wire that might cause the wire strand to break.
Install at maximum distance from high-voltage cables and power equipment.
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Wiring Power Supply
1.
Connect the "positive" cable to the "+V" terminal, and the “negative” to the "0V" terminal.
Always connect the functional earth pin to the earth ground. Use a dedicated wire for this purpose; it must
not exceed 1 meter.
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.
A non-isolated power supply can be used provided that a 0V signal is connected to the chassis.
Note that both the OPLC and the EX-A2X must be connected to the same power supply.
The EX-A2X and the OPLC must be turned on and off simultaneously.
POWER
V 0V
EX-A2X Technical Specifications
I/O module capacity
Up to 8 I/O modules can be connected to a single adapter.
Power supply
12VDC or 24VDC
Permissible range
10.2 to 28.8VDC
Max. current consumption
650mA @ 12VDC; 350mA @ 24VDC
Typical power consumption 4W
Current supply for
1A max. from 5V (see Note 1)
I/O modules
Galvanic isolation
EX-A2X power supply to:
OPLC port Yes
Expansion module port No
Status indicators
(PWR)
Green LED—Lit when power is supplied.
(COMM.)
Green LED—Lit when communication is established.
Environmental
Operating temperature
Storage temperature
Relative Humidity (RH)
Dimensions (WxHxD)
Weight
Mounting
Unitronics
IP20/NEMA1
0° to 50° C (32 to 122°F)
-20° to 60° C (-4 to 140°F)
10% to 95% (non-condensing)
80mm x 93mm x 60mm (3.15” x 3.66” x 2.362”)
125g (4.3oz.)
Either onto a 35mm DIN-rail or screw- mounted.
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Notes:
1.
Example: 2 I/O-DI8-TO8 units consume a maximum of 140mA of the 5VDC supplied by the EX-A2X.
Addressing I/Os on Expansion Modules
Inputs and outputs located on I/O expansion modules that are connected to an OPLC are assigned
addresses that comprise a letter and a number. The letter indicates whether the I/O is an input (I) or an
output (O). The number indicates the I/O’s location in the system. This number relates to both the position
of the expansion module in the system, and to the position of the I/O on that module.
Expansion modules are numbered from 0-7 as shown in the figure below.
Adapter
0
1
2
3
4
5
6
7
Expansion module
identification number
The formula below is used to assign addresses for I/O modules used in conjunction with the OPLC.
X is the number representing a specific module’s location (0-7). Y is the number of the input or output on
that specific module (0-15).
The number that represents the I/O’s location is equal to:
32 + x • 16 + y
Examples
Input #3, located on expansion module #2 in the system, will be addressed as I 67,
67 = 32 + 2 • 16 + 3
Output #4, located on expansion module #3 in the system, will be addressed as O 84,
84 = 32 + 3 • 16 + 4.
EX90-DI8-RO8 is a stand-alone I/O module. Even if it is the only module in the configuration, the EX90-DI8RO8 is always assigned the number 7.
Its I/Os are addressed accordingly.
Example
Input #5, located on an EX90-DI8-RO8 connected to an OPLC will be addressed
as I 149, 149 = 32 + 7 • 16 + 5
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.
DSP-EXP-EX-A2X 12/09
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Unitronics