Unitronics IO-ATC8 Manuel utilisateur

IO-ATC8 I/O Expansion Module 8 Analog/Thermocouple Inputs

The IO-ATC8 is an I/O Expansion Module

that can be used in conjunction with

specific Unitronics OPLC controllers.

The module offers 8 inputs that may be

set as either analog or thermocouple

inputs via wiring, jumper and software

settings.

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 Input connection points, I4 to I7

4 Input status indicators

5 Module-to-module connector port

6 Input connection points, I0 to I3

1 5

 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.

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 Check the user program before running it.

 Do not attempt to use this device with parameters that exceed permissible levels.

 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")

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12/03 IO-ATC8 I/O Expansion Module

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")

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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.

 Do not connect the ‘Neutral or ‘Line’ signal of the 110/220VAC to the device’s COM pins.

 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·m).

 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 lines used over an extended distance. Use wire

that is properly sized for the load.

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12/03 IO-ATC8 I/O Expansion Module

Analog Inputs

 Shields should be connected at the signal source.

 Inputs may be set as either thermocouple, current, or voltage. To set an input:

- Use the appropriate wiring as shown below.

- Open the device and set the jumpers according to the instructions beginning on page 6.

 The adapter and the COM signals of the analog inputs must be connected to the same 0V signal.

 The COM signals of each channel are internally shorted.

 When set to current/voltage, each 2 inputs share a common COM signal.

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Opening the Device

 Before opening the device, touch a grounded object to discharge any electrostatic

charge.

 Avoid touching the PCB board directly.

 Turn power off and disconnect all leads before opening the device.

In order to change the jumper settings of a specific input, first open the device by prying off its back, using the

blade of a flat-bladed screwdriver. The insertion points for the screwdriver are located on both sides of the

module.

1. Open the first side of the device by inserting the blade between the 2 plastic moldings as shown below, then

gently pushing up.

2. Taking care not to damage the cable, open the other side of the device by inserting the blade where shown

below, then gently pushing up.

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12/03 IO-ATC8 I/O Expansion Module

3. Gently remove the top of the

device as shown.

4. The jumpers are shown at right.

Change the jumper settings as

required, in accordance with the

tables shown on the next page.

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Jumper Settings

The tables below show how to set a specific jumper to change the functionality of a specific input.

To open the device and access the jumpers, refer to the instructions beginning on page 6.

Caution  Incompatible jumper settings and wiring may severely damage the device.

Jumper # Thermocouple* Voltage Current

1 B A A

Input 0

2 B A B

3 B A A

Input 1

4 B A B

5 B A A

Input 2

6 B A B

7 B A A

Input 3

8 B A B

9 B A A

Input 4

10 B A B

11 B A A

Input 5

12 B A B

13 B A A

Input 6

14 B A B

15 B A A

Input 7

16 B A B

* Default factory setting.

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IO-ATC8 Technical Specifications

Max. current consumption 40mA maximum from the adapter’s 5VDC

Typical power consumption 0.2W@5VDC

Status indicator

(RUN) Green LED:

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

—Blinks when the communication link fails.

Thermocouple Inputs

Number of inputs 8. See Note 1.

Input type Thermocouple, differential inputs. See Note 2.

Input range As shown in table below.

Isolation None

Conversion method Voltage to frequency

Resolution 0.1ºC (0.1ºF) See Note 3.

Conversion time 100mSec minimum, according to the filter type selected in software settings

Input impedance >10MΩ

Cold junction compensation Local, automatic

Cold junction compensation

error

±1.5ºC (±2.7ºF) maximum

Absolute maximum rating ±0.6VDC

Linearity error 0.04% maximum of full scale

Error limit 0.4% of input value

Warm-up time Typically ½ hour, ±1ºC (±1.8ºF) repeatability

Status indicators

(OUT OF RANGE) Red LEDs—Lit when the corresponding input measures an analog value in

excess of the input range. See Note 4.

Thermocouple input ranges

Type Temperature range Wire color

ANSI (USA) BS 1843 (UK)

mV -5 to 56mV - -

B 200 to 1820°C + Grey + None

(300 to 3276°F) - Red - Blue

E -200 to 750°C + Violet + Brown

(-328 to 1382°F) - Red - Blue

J -200 to 760°C + White + Yellow

(-328 to 1400°F) - Red - Blue

K -200 to 1250°C + Yellow + Brown

(-328 to 2282°F) - Red - Blue

N -200 to 1300°C + Orange + Orange

(-328 to 2372°F) - Red - Blue

R 0 to 1768°C + Black + White

(32 to 3214°F) - Red - Blue

S 0 to 1768°C + Black + White

(32 to 3214°F) - Red - Blue

T -200 to 400°C + Blue + White

(-328 to 752°F) - Red - Blue

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Analog Inputs

Number of inputs 8 (single-ended) See Note 1.

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

Input type Either Normal or Fast mode, according to the filter type selected in software

settings

Conversion method Voltage to frequency

Normal mode

Resolution at 0-10V,

0-20mA

14-bit (16384 units)

Resolution at 4-20mA 3277 to16383 (13107 units)

Conversion time 100mSec minimum per input

Fast mode

Resolution at 0-10V,

0-20mA

12-bit (4096 units)

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

Conversion time 25mSec minimum per input

Input impedance >400KΩ—voltage

500Ω—current

Isolation None

Absolute maximum rating ±15V—voltage

±30mA—current

Linearity error 0.04% max of full scale

Error limits 0.4% of input value

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 5.

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 150g (5.3 oz)

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

Notes:

1. Each input may be set as either thermocouple, voltage (0-10V), or current (0-20mA, 4-20mA)

via wiring, jumper and software settings.

2. The device can also measure voltage within the range of -5 to 56mV, at a resolution of 0.01mV.

The device can also measure raw value frequency at a resolution of 14-bits(16384).

3. The input analog value represents the measured value as shown in the following examples:

- Thermocouple: a value of 262 is represented as 26.2ºC.

- mV: value of 262 is represented as 2.62mV.

4. The value of a thermocouple may also indicate when the sensor is not connected to the input, or

when the analog value exceeds the permissible range. If such is the case, the value will be 32767.

5. The voltage or current value of analog inputs can also indicate faults, as shown in the table below.

Value: 12-bit

(Fast mode)

Value: 14-bit

(Normal mode)

Input Value

Deviates:

-1 -1

Slightly below the input range.

4096 16384 Slightly above the input range.

32767 32767

Greatly above or below the input range.

10 Unitronics Industrial Automation

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