Unitronics IO-DI8-RO8-L User manual

Unitronics 1
IO-DI8-RO8, IO-DI8-RO8-L I/O Expansion Modules 8 Inputs, 8 Outputs
The IO-DI8-RO8 and IO-DI8-RO8-L are I/O
expansion modules that can be used in
conjunction with specific Unitronics OPLC
controllers.
The modules are identical except for their
voltage specifications: IO-DI8-RO8 runs at
24 VDC; IO-DI8-RO8-L at 12 VDC.
Both modules offer 8 digital inputs, type
pnp/npn (source/sink), and 8 relay outputs.
The interface between a module and the
OPLC is provided by an adapter.
These modules may either be snap-
mounted on a DIN rail, or screw-mounted
onto a mounting plate.
Component identification
1 Module-to-module connector
2 Status indicators
3 Connection points for power
supply to outputs
4 Output connection points
5 Module-to-module connector port
6 Input connection points
1 5
6
4
2
3
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.
Symbol Meaning Description
Danger The identified danger causes physical
and property damage.
Warning The identified danger can cause
physical and property damage.
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. Caution 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.

IO-DI8-RO8, IO-DI8-RO8-L I/O Expansion Modules 5/05
2 Unitronics
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
Snap the device onto the DIN rail as shown below; the module will be squarely situated on the DIN rail.
60mm
(2.362")
3.5mm
(0.137")
14mm
(0.55")
80mm
(3.15")
93mm
(3.66")
44.5mm
(1.75")

5/05 IO-DI8-RO8, IO-DI8-RO8-L I/O Expansion Modules
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Screw-Mounting
The figure below is not drawn to scale. It may be used as a guide for screw-mounting the module.
Mounting screw type: either M3 or NC6-32.
4mm
5.8mm
(0.228")
85mm
(3.346")
80mm
(3.15")
68.4mm
(2.693")
93mm
(3.66")
4mm (x2)
(0.16")
(0.16")

IO-DI8-RO8, IO-DI8-RO8-L I/O Expansion Modules 5/05
4 Unitronics
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.
Do not connect the ‘Neutral or ‘Line’ signal of the 110/220VAC to the device’s 0V pin.
Double-check all wiring before turning on the power supply.
Wiring Procedures
Use crimp terminals for wiring; use 26-12 AWG 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.
I/O Wiring—General
Input or output cables should not be run through the same multi-core cable or share the same wire.
Allow for voltage drop and noise interference with input/output lines used over an extended distance.
Use wire that is properly sized for the load.
The adapter and I/O signals must be connected to the same 0V signal.

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Digital I/Os
Inputs may be wired as either pnp (source) or npn (sink) inputs.
npn (sink) inputs pnp (source) inputs
0V
+V
Circuit Protection Device
0V
+V
npn (sink)
high-speed counter/frequency measurer
pnp (source )
high-speed counter/frequency measurer
0V
+V
Circuit Protection Device
High-speed
Counter
Reset
High-speed
Counter
0V
+V
High-speed
Counter
Reset
High-speed
Counter

IO-DI8-RO8, IO-DI8-RO8-L I/O Expansion Modules 5/05
6 Unitronics
Wiring the Outputs’ Power Supply
Wiring DC supply
1 Connect the "positive" cable to the "+V" terminal, and the “negative” to the "0V" terminal.
A non-isolated power supply can be used provided that a 0V signal is connected to the chassis.
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.
Notes: 1. The adapter and output’s power supply must be connected to the same 0V signal.
Outputs
Circuit Protection
Device
L1, L2, L3 (115/230VAC)
+V (12/24VDC)
Output's
power
supply 0V
+V
N
0V
Load
See Note 1
Increasing Contact Life Span
Both modules have 8 relay outputs. To increase the life span of these contacts and protect the module 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.
0V
(24VDC)
+V
L1, L2, L3
(115/230VAC)
N
R
C

5/05 IO-DI8-RO8, IO-DI8-RO8-L I/O Expansion Modules
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IO-DI8-RO8, IO-DI8-RO8-L Technical Specifications
Max. current consumption 70mA maximum from the adapter’s 5VDC
Typical power consumption 0.18W @ 5VDC
Status indicator
(RUN) Green LED:
—Lit when a communication link is established between module and OPLC.
—Blinks when the communication link fails.
Inputs
Number of inputs 8 (in one group)
Input type pnp (source) or npn (sink)
Galvanic isolation None
Status indicators(IN) Green LEDs—Lit when the corresponding input is active. See Note 1.
Nominal input voltage 24VDC for IO-DI8-RO8, 12VDC for IO-DI8-RO8-L
Input voltage IO-DI8-RO8 IO-DI8-RO8-L
pnp (source) 0-5VDC for Logic ‘0’
17-28.8VDC for Logic ‘1’
0-3VDC for Logic ‘0’
8-15.6V for Logic ‘1’
npn (sink), voltage/current 17-28.8VDC/<1.1 mA for Logic ‘0’
0-5VDC/>4.3mA for Logic ‘1’
8-15.6VDC/<1.1 mA for Logic ‘0’
0-3VDC/>4.3mA for Logic ‘1’
Input current 6mA@24VDC 6mA@12VDC
Response time 10mSec typical
Input #7 The specifications below apply when this input is wired for use as a high-
speed counter input/frequency measurer. See Notes 2 and 3.
Resolution 16-bit
Frequency 5kHz maximum
Minimum pulse width 80µs
Outputs
Number of outputs 8 relay
Output type SPST-NO (Form A)
All relays share a common signal
Isolation By relay
Type of relay
IO-DI8-RO8 Tyco PCN-124D3MHZ or compatible
IO-DI8-RO8-L Tyco PCN-112D3MHZ or compatible
Output current 3A maximum per output (resistive load)
8A maximum total for common (resistive load).
Rated voltage 250VAC / 30VDC
Minimum load 1mA@5VDC
Life expectancy 100k operations at maximum load
Response time 10mS (typical)
Status Indicators (OUT) Red LEDs—Lit when the corresponding output is active.
Contact protection External precautions required
(see above: Increasing Contact Life Span)
Outputs’ power supply: IO-DI8-RO8
Nominal operating voltage 24VDC
Operating voltage 20.4 to 28.8VDC
Maximum current consumption 70mA@24VDC

IO-DI8-RO8, IO-DI8-RO8-L I/O Expansion Modules 5/05
Outputs’ power supply: IO-DI8-RO8-L
Nominal operating voltage 12VDC
Operating voltage 10.2 to 15.6VDC
Maximum current consumption 90mA@12VDC
Environmental IP20 / NEMA1
Operating temperature 0°to 50°C (32°to 122°F)
Storage temperature -20°to 60°C (-4°to 140°F)
Relative Humidity (RH) 5% to 95% (non-condensing)
Dimensions (WxHxD) 80mm x 93mm x 60mm (3.15 ” x 3.66 ” x 2.362 ”)
Weight 172g (6.07oz.)
Mounting Either onto a 35mm DIN-rail or screw- mounted.
Notes:
1. The inputs' LEDs light up only when communication link is established between module and OPLC.
2. Input #7 can function either as a high-speed counter, a frequency measurer, or as a normal digital input.
When Input #7 is used as a normal digital input, normal input specifications apply.
3. Input #6 can function either as the counter’s reset, or as a normal digital input; in either case, its
specifications are those of a normal digital input.
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.
01234567
Expansion module
identification number
Adapter
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.
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