background image

 

 

  

 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 

Communication status indicator 

Input connection points, I4 to I7 

Input status indicators  

Module-to-module connector port 

Input connection points, I0 to I3 

 

 

1

5

2

3

6

4

 

 

 

 

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. 

Unitronics Industrial Automation 

 

Summary of Contents for IO-ATC8

Page 1: ...d 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 ...

Page 2: ...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 bel...

Page 3: ...ng 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 Unitronics Industrial Automation 3 ...

Page 4: ...le 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 mm 2 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 ...

Page 5: ...se 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 Unitronics Industrial Automation 5 ...

Page 6: ...f 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 inserti...

Page 7: ...pansion 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 Unitronics Industrial Automation 7 ...

Page 8: ... 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 8 Unitronics Industrial Auto...

Page 9: ...tomatic 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 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 r...

Page 10: ... 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 ...

Page 11: ...ormula 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 lo...

Page 12: ...in this document including but not limited to 0implied warranties of merchantability and or fitness for a particular use or purpose Unitronics assumes no responsibility for the results direct and or indirect of any misuse of the information appearing in this document nor for any use of the Unitronics products referred to herein in any manner deviating from the recommendations made in this document...

Reviews: