Unitronics O-AI4-AO2 Bedienungsanleitung

Unitronics Industrial Automation Systems 1

IO-AI4-AO2 I/O Expansion Module 4 Analog Inputs, 2 Analog Outputs

The IO-AI4-AO2 is an I/O expansion

module that can be used in conjunction

with specific Unitronics OPLC controllers.

The module offers 4 12-bit analog inputs;

functioning at 0-10V,0-20mA, 4-20mA;

and 2 12-bit +sign analog outputs;

functioning at ±10V, 0-20mA, 4-20mA.

The interface between the module and

the OPLC is provided by an adapter.

The module may either be snap-mounted

on a DIN rail, or screw-mounted onto a

mounting plate.

Component identification

1 Module-to-module connector

2 Communication status indicator

3 Connection points for power

supply to analog unit

4 Output connection points

5 Input/Output status indicators

6 Module-to-module connector port

7 Input connection points

1 6

OUT OF RANGE

SHORT CIRCUIT

IO -AI 4 -AO 2

24 VDC

+V 0V I

VCOM

AO0

IVCOM

AO1

IVCOM

AI3

IVCOM

AI2

IVCOM

AI1

IVCOM

AI0

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 electrical wiring of this device.

 Under no circumstances will Unitronics be liable or responsible for any consequential damage that may

arise as a result of installation or use of this equipment, and is not responsible for problems resulting from

improper or irresponsible use of this device.

 All examples and diagrams shown in the manual are intended to aid understanding. They do not

guarantee operation.

 Unitronics accepts no responsibility for actual use of this product based on these examples.

 Only qualified service personnel should open this device or carry out repairs.

 Please dispose of this product in accordance with local and national standards and regulations.

 Check the user program before running it.

 Do not attempt to use this device with voltage exceeding permissible levels.

 Install an external circuit breaker and take appropriate safety measures against short-circuiting

in external wiring.

 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-AI4-AO2 I/O Expansion Module 11/00

2 Unitronics Industrial Automation Systems

Mounting the Module

Mounting 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.

 Provide proper ventilation by leaving a minimum space of 10mm

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.

DIN-rail mounting

Snap the device onto the DIN rail as shown below; the module will be squarely situated on the DIN rail.

60mm

3.5mm

14mm

80mm

93mm

44.5mm

OUT OF RANGE

S H O RT C IRC U IT

IO-AI4-AO 2

24 VDC

+V 0V I

VCOM

AO 0

IVCOM

AO1

IVCOM

AI3

IVCOM

AI2

IVCOM

AI1

IVCOM

AI0

Screw-Mounting

The figure on the next page is drawn to scale. It may be used as a guide for screw-mounting the module.

Mounting screw type: either M3 or NC6-32.

11/00 IO-AI4-AO2 I/O Expansion Module

Unitronics Industrial Automation Systems 3

4mm

5.8mm

85mm

80mm

68.4mm

93mm

4mm (x2)

IO-AI4-AO2 I/O Expansion Module 11/00

4 Unitronics Industrial Automation Systems

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

Wire Size

Use 26-12 AWG wire (0.13 mm 2–3.31 mm2) for all wiring purposes.

Wiring Considerations

 Note that the adapter, I/O signals, and analog outputs’ power supply must be connected to the same

0V signal.

 Note that the COM signals of each I/O are internally connected to the module’s 0V.

 Do not use tin, solder or any other substance on the stripped wire that might cause the wire strand

to break.

 We recommend that you use crimp terminals for wiring.

 Install at maximum distance from high-voltage cables and power equipment.

General Wiring Procedures

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·m).

 Do not touch live wires.

 Double-check all the wiring before turning on the power supply.

I/O Wiring

 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.

11/00 IO-AI4-AO2 I/O Expansion Module

Unitronics Industrial Automation Systems 5

Input Wiring

 Shields should be connected at the signal source.

 Inputs may be wired to work with either current or voltage.

Current

transmitter

OUT OF RANGE

S HO RT CIR C UIT

IO-AI4-AO 2

24 VDC

+V 0V IVCOM

AO0

IVCOM

AO1

IVCOM

AI3

IVCOM

AI 2

IVCOM

AI1

IVCOM

AI0

4 wire

connection

Circuit protection device

Power

supply

Voltage

connection

Current

connection

LOAD

Power

supply

Current

transmitter

2 wire

connection

3 wire

connection

Voltage

Input

Current

transmitter

Output Wiring

 Shields should be earthed, connected to the earth of the cabinet.

 Do not connect unused outputs.

 An output can be wired to either current or voltage.

 Do not use current and voltage from the same source channel.

Wiring the Analog 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.

 The 24VDC power supply must be turned on and off simultaneously with the module’s

power supply.

IO-AI4-AO2 I/O Expansion Module 11/00

6 Unitronics Industrial Automation Systems

IO-AI4-AO2 Technical Specifications

Max. current consumption 30mA maximum from the adapter’s 5VDC

Typical power consumption 0.1W @ 5VDC

Status indicator

(RUN) Green LED:

—Lit when a communication link is established between module and OPLC.

—Blinks when the communication link fails.

Analog Inputs

Number of inputs 4 (single-ended)

Input range 0-10V, 0-20mA ,4-20mA. See Note 1.

Conversion method Successive approximation

Resolution (except at 4-20mA) 12-bit (4096 units)

Resolution at 4-20mA 819 to 4095 (3277 units)

Conversion time 20msec

Input impedance 1MΩ—voltage

121.5Ω—current

Galvanic isolation None

Absolute maximum rating ±20V—voltage

±40mA—current

Full-scale error ±4 LSB (0.1%)

Linearity error ±1 LSB (0.025%)

Operational error limits ±0.4%

Status indicators

(OUT OF RANGE)

Red LEDs—Lit when the corresponding input is receiving current or voltage in

excess of the input range. See Note 2.

Analog Outputs

Number of outputs 2 (single-ended)

Output range ±10V, 0-20mA, 4-20mA. See Note 1.

Resolution (except at 4-20mA)

Resolution at 4-20mA

12-bit (4096 units) + sign

819 to 4095 (3277 units)

Load impedance 1kΩminimum—voltage

500Ωmaximum—current

Galvanic isolation None

Conversion time 5msec

Linearity error ±0.1%

Operational error limits ±0.2%

Status Indicators

(SHORT CIRCUIT) Red LED—Lit when an output wired to deliver a positive voltage is

short-circuited. See Note 3.

Analog Power Supply 24VDC

Permissible range 20.4 to 28.8VDC

Max. current consumption 75mA@24VDC

Environmental IP20

Operating temperature 0°to 50°C

Storage temperature -20°to 60°C

Relative Humidity (RH) 5% to 95% (non-condensing)

Dimensions (WxHxD) 80mm x 93mm x 60mm

Weight 146.3g (5.15oz.)

Mounting Either onto a 35mm DIN-rail or screw- mounted.

11/00 IO-AI4-AO2 I/O Expansion Module

Unitronics Industrial Automation Systems 7

Notes:

1. Note that the range of each I/O is defined both by wiring and within the controller’s software.

2. The analog value of an input may also indicate when the input is functioning out of range. If an analog

input exceeds the permissible range, its value will be 4096.

3. When an output that is delivering positive output voltage is connected to a load that short-circuits, the

SHORT CIRCUIT LED lights up on the module. The short circuit is also identified by the software

program within the controller connected to the module.

Within the M90 OPLC, for example, SB 5 turns ON. SI 5 contains a bitmap indicating the module

containing the affected output.

For more information, refer to the on-line help supplied with the programming package of your controller.

Addressing I/Os on M90 Expansion Modules

Inputs and outputs located on I/O expansion modules that are connected into an M90 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 M90 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-DI8-

RO8 is always assigned the number 7.

Its I/Os are addressed accordingly.

Example

 Input #5, located on an EX90-DI8-RO8 connected to an M90 OPLC will be addressed

as I 149, 149 = 32 + 7 • 16 + 5

High-speed counter/

Frequency

measurement

Analog output

resolution

Analog

outputs

Digital

outputs

Analog input

resolution

Analog

inputs

Digital inputs

(24VDC)

One

—

8 pnp

(source)

—

8 pnp/npn

(source/sink)

IO-DI8-TO8

One

—

16 pnp/npn

(source/sink)

IO-DI16

—

16 pnp

(source)

—

IO-TO16

Digital I/O (transistor)

One

—

4 relay

outputs

—

8 pnp/npn

(source/sink)

IO-DI8-RO4

—

8 relay

outputs

—

IO-RO8

One

—

8 relay

outputs

—

8 pnp

(source)

EX90-DI8-RO8*

Digital I/O (relay)

* Stand-alone module. Other modules are used in conjunction with the EX-A1 adapter

—

12 bit

+ sign

2 outputs

±10V,

0-20mA, 4-20mA

—

12 bit

4 inputs

0-10V,

0-20mA , 4-20mA

—

IO-AI4-AO2

Analog I/O

To order the expansion module that best fits your system, contact your local distributor.

For a list of Unitronics distributors, check our website: http://www.unitronic.com/contact.htm

—

12 bit

4 PT100

-50° to 460°C

—

IO-PT4

PT 100

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