PC-HELPER
Isolated Expansion Accessory for Analog Input
ATII-8C
User's Manual
CONTEC CO.,LTD.
ATII-8C
i
Check Your Package
Thank you for purchasing the CONTEC product.
The product consists of the items listed below.
Check, with the following list, that your package is complete. If you discover damaged or missing
items, contact your retailer.
Product Configuration List
- Accessory Board [ATII-8C] …1
- User’s Manual (this booklet) …1
- Warranty Certificate …1
- Serial number label …1
Accessory board
User's Manual
User's Manual
XXXXXXXXXXXXX
XXXXXXXXXXXXX
Serial number labelWarranty Certificate
Warr ant y
Certificate
ii
ATII-8C
Copyright
Copyright 2013 CONTEC CO., LTD. ALL RIGHTS RESERVED.
No part of this document may be copied or reproduced in any form by any means without prior written
consent of CONTEC CO., LTD.
CONTEC CO., LTD. makes no commitment to update or keep current the information contained in this
document. The information in this document is subject to change without notice.
All relevant issues have been considered in the preparation of this document. Should you notice an
omission or any questionable item in this document, please feel free to notify CONTEC CO., LTD.
Regardless of the foregoing statement, CONTEC assumes no responsibility for any errors that may
appear in this document or for results obtained by the user as a result of using this product.
Trademarks
Other brand and product names are trademarks of their respective holder.
ATII-8C
iii
Table of Contents
Copyright.................................................................................................................................................ii
Trademarks..............................................................................................................................................ii
Table of Contents...................................................................................................................................iii
1. Before Using the Product 1
About the Board ......................................................................................................................................1
Features.............................................................................................................................................1
About The Analog E Series.............................................................................................................2
Cable & Connector (Option) ........................................................................................................2
Accessories (Option).....................................................................................................................2
Customer Support....................................................................................................................................3
Web Site ...........................................................................................................................................3
Limited One-Year Warranty...................................................................................................................3
How to Obtain Service............................................................................................................................3
Liability ...................................................................................................................................................3
Safety Precautions...................................................................................................................................4
Safety Information ...........................................................................................................................4
Handling Precautions.......................................................................................................................4
Environment.....................................................................................................................................5
Inspection .........................................................................................................................................5
Storage..............................................................................................................................................5
Disposal............................................................................................................................................5
2. Hardware Setup 7
Parts of the Board and Explanation........................................................................................................7
Using Method........................................................................................................................................10
Operation as a Voltage Input Amplifier........................................................................................10
Operation as a Current Input Amplifier ........................................................................................10
Operation as a Thermocouple Sensor Amplifier ..........................................................................11
Cautions Regarding the Power Supply.................................................................................................12
DC+5V Supply from the A/D Converter Board via CN1 (When JP2 setting = (1 - 2)) .............12
+5V - +9VDC Supply from an External Power Supply (When JP2 setting = (2 - 3))................12
Cautions when Using Two ATII-8C Boards........................................................................................13
Adjustment Procedure...........................................................................................................................14
3. About Hardware 17
Circuit ....................................................................................................................................................17
Interface Connector...............................................................................................................................18
iv
ATII-8C
Hardware Specifications........................................................................................................................19
Differences between ATII-8, ATII-8A and ATII-8C........................................................................21
1. Before Using the Product
ATII-8C
1
1.
Before Using the Product
About the Board
This product is an accessory board for electrically isolating external signals input to A/D converter
interface boards.
Features
Isolated Amplifier Function is installed.
This product contains eight isolation amplifier channels.
The board provides isolation between the input and output signals and also between channels. The
input gain can be set independently for each channel to either 1 or 200.
Cold Junction Compensation Circuit for Thermocouple Sensor is installed.
This product has a cold junction compensation (CJC) circuit used for all eight channels. The CJC
circuit is available when the 200 gain is selected. The circuit allows a thermocouple to be connected
directly to this product.
Current Input Function is installed.
Each of this product channels has a 250Ω current monitor resistor. This enables a -40mA - +40mA
current input to be converted to a -10V - +10V voltage input.
Easy connection to external signal with M3 screw type terminal blocks.
This product has M3 screw-type terminals for connecting the analog input signals. The analog output
signals for the analog E series boards also use M3 screw-type terminals. These terminals make it easy
to connect external devices.
Other Features
- Easy to connect with the analog E series board through a PCB37PS Series (option).
- This two products can be cascaded to provide a maximum of 16 isolated amplifier channels.
- Either PC power (via CN1) or an external power source can be used to supply power to this
product.
- This product can be installed on the DIN rail using the optional DIN rail installation adapter
(DIN-ADP1).
ATII-8C ATII-8C ATII-8C
Connection Example 1
Connect ATTII-8A with an external equipment
in cascade connection.
PCB37PS
series
PC or
I/O expansion unit
Connection Example 2
PCB37PS
series
It connects with the thermo-couple
from the terminal stand on ATTII-8C.
Thermocouple
PC or
I/O expansion unit
External
device
External
device
Figure 1 Connection Examples
1. Before Using the Product
2
ATII-8C
About The Analog E Series
This manual uses the generic term "analog E series" to represent the following 12 products.
Board for PCI
AD12-16(PCI)EV, AD16-16(PCI)EV, AD12-16U(PCI)EV, AD16-16U(PCI)EV,
AD12-16(PCI)E, AD16-16(PCI)E, AD12-16U(PCI)EH, AD16-16U(PCI)EH
Board for ISA
AD12-16(PC)EH, AD16-16(PC)EH, AD12-16U(PC)EH, AD16-16U(PC)EH
Cable & Connector (Option)
Shielded Cable with 37-pin D-SUB connectors at either ends
: PCB37PS-0.5P (0.5m)
: PCB37PS-1.5P (1.5m)
Accessories (Option)
DIN rail adapter : DIN-ADP1
* Check the CONTEC’s Web site for more information on these options.
1. Before Using the Product
ATII-8C
3
Customer Support
CONTEC provides the following support services for you to use CONTEC products more efficiently
and comfortably.
Web Site
Japanese http://www.contec.co.jp/
English http://www.contec.com/
Chinese http://www.contec.com.cn/
Latest product information
CONTEC provides up-to-date information on products.
Free download
You can download updated driver software and differential files as well as sample programs available in
several languages.
Note! For product information
Contact your retailer if you have any technical question about a CONTEC product or need its price,
delivery time, or estimate information.
Limited One-Year Warranty
CONTEC products are warranted by CONTEC CO., LTD. to be free from defects in material and
workmanship for up to one year from the date of purchase by the original purchaser.
Repair will be free of charge only when this device is returned freight prepaid with a copy of the
original invoice and a Return Merchandise Authorization to the distributor or the CONTEC group office,
from which it was purchased.
This warranty is not applicable for scratches or normal wear, but only for the electronic circuitry and
original products. The warranty is not applicable if the device has been tampered with or damaged
through abuse, mistreatment, neglect, or unreasonable use, or if the original invoice is not included, in
which case repairs will be considered beyond the warranty policy.
How to Obtain Service
For replacement or repair, return the device freight prepaid, with a copy of the original invoice. Please
obtain a Return Merchandise Authorization number (RMA) from the CONTEC group office where you
purchased before returning any product.
* No product will be accepted by CONTEC group without the RMA number.
Liability
The obligation of the warrantor is solely to repair or replace the product. In no event will the
warrantor be liable for any incidental or consequential damages due to such defect or consequences that
arise from inexperienced usage, misuse, or malfunction of this device.
1. Before Using the Product
4
ATII-8C
Safety Precautions
Understand the following definitions and precautions to use the product safely.
Safety Information
This document provides safety information using the following symbols to prevent accidents resulting
in injury or death and the destruction of equipment and resources. Understand the meanings of these
labels to operate the equipment safely.
DANGER
DANGER indicates an imminently hazardous situation which, if not avoided, will
result in death or serious injury.
WARNING
WARNING indicates a potentially hazardous situation which, if not avoided, could
result in death or serious injury.
CAUTION
CAUTION indicates a potentially hazardous situation which, if not avoided, may
result in minor or moderate injury or in property damage.
Handling Precautions
DANGER
Do not use the product where it is exposed to flammable or corrosive gas. Doing so may result in
an explosion, fire, electric shock, or failure.
CAUTION
- Do not strike or bend this product.
Otherwise, this product may malfunction, overheat, cause a failure or breakage.
- There are jumpers on the board that need to be set in advance. Be sure to check these before
installing the board.
- Only set the jumpers on the board to the specified settings.
Otherwise, the board may malfunction, overheat, or cause a failure.
- Make sure that ample power is supplied to the board when you use an external power supply.
Insufficiently energized boards could malfunction, overheat, or cause a failure.
- The specifications of this product are subject to change without notice for enhancement and quality
improvement.
Even when using the product continuously, be sure to read the manual and understand the contents.
- Do not modify this product. CONTEC will bear no responsibility for any problems, etc., resulting
from modifying this product.
- Regardless of the foregoing statements, CONTEC is not liable for any damages whatsoever
(including damages for loss of business profits) arising out of the use or inability to use this
CONTEC product or the information contained herein.
1. Before Using the Product
ATII-8C
5
Environment
Use this product in the following environment. If used in an unauthorized environment, the board may
overheat, malfunction, or cause a failure.
Operating temperature
0 - 50°C
Operating humidity
10 - 90%RH (No condensation)
Corrosive gases
None
Floating dust particles
Not to be excessive
Inspection
Storage
When storing this product, keep it in its original packing form.
(1) Put this product in the storage bag.
(2) Wrap it in the packing material, then put it in the box.
(3) Store the package at room temperature at a place free from direct sunlight, moisture, shock,
vibration, magnetism, and static electricity.
Disposal
When disposing of the product, follow the disposal procedures stipulated under the relevant laws and
municipal ordinances.
- The gold-plated leads of the bus
connector have no stain or corrosion.
1. Before Using the Product
6
ATII-8C
2. Hardware Setup
ATII-8C
7
2.
Hardware Setup
Parts of the Board and Explanation
[mm]
CN1
CN2
TB1
TB2
JP2
JP1
VR1
VR2
CH0 CH1 CH2 CH3 CH4 CH5 CH6 CH7
JP4 JP5 JP7 JP8 JP10 JP11 JP13 JP14 JP16 JP17 JP19 JP20 JP22 JP23 JP25 JP26
VR5 VR4
VR9
VR3
VR13 VR12
VR17 VR16
VR21 VR20
VR25 VR24
VR29 VR28
VR33 VR32
VR7
VR11
VR15
VR19
VR23
VR27
VR31
JP3 JP6 JP9 JP12 JP15 JP18 JP21 JP24
CP4
CP5
CP6
CP7
CP8
CP9
CP10
CP11
CP1 CP2 CP3
7 7
105
7
27
727
230
8 - φ3.5
25.5
14.5
20.6420.969.97
VR8
Figure 2.1 Parts of the Board and Physical Dimension
2. Hardware Setup
8
ATII-8C
CN1 : Connector for connecting to an A/D converter board.
A PCB37PS series cable can be used if connecting to an analog E series board.
CN2 : Connector for connecting another ATII-8C in cascade.
TB1 : Terminal for connecting external power supply (+5V - +9VDC). If JP2 is set to
external power supply, connect the external power supply to this terminal.
TB2 : Terminal for analog output signal. Use to connect the analog output signal (OUT0)
on analog E series boards to an external device.
CH0 - CH7 : Terminals for analog input signals.
Use to connect external devices or thermocouples.
JP1 : Jumper for selecting the signals connected to CN1.
8
JP1
9 101112131415IN
1234567IN
8
0
8
JP1
9 101112131415IN
1234567IN
8
0
Connect CH0 - CH7 outputs to
CN1 Analog Input 0 - Analog Input 7.
Connect CH0 - CH7 outputs to
CN1 Analog Input 8 - Analog Input 15.
Figure 2.2 Channel Connection Setting
JP2 : Jumper for the power supply setting.
JP2 specifies the power supply for this product.
- Supply +5VDC from the A/D converter board via CN1.
This is only available when using the analog E series.
Set JP2 to 1 - 2.
- Supply +5V - +9VDC from an external power supply.
Set JP2 to 2 - 3 when using an external power supply.
123
JP2
<From CN1> <External power supply>
123
JP2
Figure 2.3 Setting the power supply
2. Hardware Setup
ATII-8C
9
JP3 - JP26 : Jumpers for voltage or current input selection, input gain selection, and CJC selection
Table 2.1 Relationship of Channel and Each Jumper
CH0 CH1 CH2 CH3 CH4 CH5 CH6 CH7
Voltage / current
input selection
JP4 JP7 JP10 JP13 JP16 JP19 JP22 JP25
Input gain selection JP5 JP8 JP11 JP14 JP17 JP20 JP23 JP26
Cold junction
compensation
selection
JP3 JP6 JP9 JP12 JP15 JP18 JP21 JP24
123
JP5
123
JP5
Input gain selection (CH0)
<Gain = 1> <Gain = 200>
123
JP4
123
JP4
Voltage or current input
selection (CH0)
<Voltage input> <Current input>
JP3
23
1
JP3
123
<Without CJC> <With CJC>
CJC selection (CH0)
Figure 2.4 Voltage or Current Input, Input Gain Selection, CJC Setting
<For CH0>
VR1 : Offset voltage adjustment trimmer for CJC circuit.
VR2 : Gain adjustment trimmer for CJC circuit.
Other VR : Trimmers for adjusting offset and gain for each channel.
Table 2.2 Relationship of Trimmer and Each Channel
CH0 CH1 CH2 CH3 CH4 CH5 CH6 CH7
Input Amp. Gain VR5 VR9 VR13 VR17 VR21 VR25 VR29 VR33
Isolated Amp. Offset VR3 VR7 VR11 VR15 VR19 VR23 VR27 VR31
Isolated Amp. Gain VR4 VR8 VR12 VR16 VR20 VR24 VR28 VR32
CP1 : Check pin for adjusting the offset of the CJC circuit.
CP2 : Check pin for adjusting the gain of the CJC circuit.
CP3 : Analog ground.
CP4 - CP11 : Check pins for adjusting the input amplifier gains.
Table 2.3 Relationship of Check Pin and Each Channel
CH0 CH1 CH2 CH3 CH4 CH5 CH6 CH7
Input Amp. Output CP4 CP5 CP6 CP7 CP8 CP9 CP10 CP11
2. Hardware Setup
10
ATII-8C
Using Method
This product’ s each channel can have three different applications. Here we show you these
applications of CH0.
Operation as a Voltage Input Amplifier
Input a voltage in the range -10V - +10V to terminal CH0.
The input voltage is output from CN1 via the isolated amplifier.
The jumper settings are as follows.
123
JP4
23
JP3
123
JP5
1
< Operation as a voltage input amplifier with input gain = 1.>
123
JP4
23
JP3
1
Voltage input Without CJCInput gain = 1
23
JP5
1
< Operation as a voltage input amplifier with input gain = 200.>
Voltage input Without CJCInput gain = 200
Figure 2.5 Settings for Operation as a Voltage Input Amplifier
Operation as a Current Input Amplifier
Input a current in the range -40mA - +40mA to terminal CH0.
The 250
Ω
monitor resistor converts the input current to a voltage (-10V - +10V) which is output from
CN1 via the isolated amplifier.
The jumper settings are as follows.
123
JP4
23
JP5
1
23
JP3
1123
JP4
23
JP5
1
23
JP3
1
Current input Without CJCInput gain = 1 Current input Without CJCInput gain = 200
< Operation as a current input amplifier with input gain = 1.>< Operation as a currrent input amplifier with input gain = 200.>
Figure 2.6 Settings for Operation as a Current Input Amplifier
CAUTION
- Always short +IN and -IN together for unused channels.
- Allow a 15 minute warm-up period after turning on the power supply before using.
- Although the analog input circuits include a protection circuit, do not apply an input signal to any
channel in excess of
±
11V (
±
44mA) relative to the negative input.
2. Hardware Setup
ATII-8C
11
Operation as a Thermocouple Sensor Amplifier
Connect the output of the thermocouple sensor to terminal CH0.
The output of the thermocouple sensor is amplified by 200 times and output from CN1 via the isolated
amplifier. The +IN terminal on the terminal bank is connected to a line disconnection detector circuit.
If a line disconnection occurs, the CN1 output is saturated towards the -10V side, providing a line
disconnection detection signal.
The value is output from CN1 after performing CJC based on the temperature sensor on the board.
The default factory settings for the CJC circuit are adjusted for a type K thermocouple sensor. If you
change the type of thermocouple sensor, refer to the section describing the adjustment procedure. Note
that, as hardware linearization is not performed, linearization must be performed based on the output of
CN1.
The jumper settings are as follows.
23
JP5
1
123
JP4
23
JP3
1
Voltage input With CJCInput gain = 200
Figure 2.7 Settings for Operation as a Thermocouple Sensor Amplifier
CAUTION
- Type N, B, R, and S thermocouple sensors cannot be used.
- Always short +IN and -IN together for unused channels.
- Allow a 15 minute warm-up period after turning on the power supply before using.
2. Hardware Setup
12
ATII-8C
Cautions Regarding the Power Supply
+5VDC Supply from the A/D Converter Board via CN1
(When JP2 setting = (1 - 2))
The resistance increases with the length of the cable between this product and A/D converter board. A
long cable may result in error of this product due to a low supply voltage.
If connecting this one product only, use a PCB37PS-0.5P or PCB37PS-1.5P cable. If connecting this
two products, use a PCB37PS-0.5P cable.
If using other than a PCB37PS series cable, ensure that the power cable resistance is 0.1Ω or less.
+5V - +9VDC Supply from an External Power Supply
(When JP2 setting = (2 - 3))
Table 4 lists the recommended specifications of the external power supply.
Ensure that the current rating of the power supply has a sufficient safety margin over the maximum
current consumption of this product.
Note also that excessive noise on the power supply line may reduce the accuracy of this product.
Table 2.4 Specification for an External Power Supply
Item Specification
Power voltage +5V - +9VDC
Variation ±5%
Current capacity 1000mA
2. Hardware Setup
ATII-8C
13
Cautions when Using Two ATII-8C Boards
When using two ATII-8C boards, use a PCB37PS-0.5P cable to connect CN2 on the first board to CN1
on the second board. This connects the outputs from CN1 on the second ATII-8C board to IN8 - IN15
of CN1 on the first board via CN2 on the first board. In this case, set jumper JP1 as follows.
Board 1 Board 2
8
JP1
9 101112131415IN
1234567IN
8
0
8
JP1
9101112131415IN
1234567IN
8
0
Figure 2.8 Settings for Using This Two products
The power supplies for this product are set by their respective JP2 jumpers.
Setting JP2 to (1 - 2) supplies power to the two ATII-8C boards via their respective CN1 connectors.
If JP2 is set to (2-3), supply power to the two ATII-8C boards via their respective TB1 terminals.
2. Hardware Setup
14
ATII-8C
Adjustment Procedure
For the adjustment procedure, you will require a reference voltage generator and a digital multi-meter.
The following uses CH0 as an example to explain the adjustment procedure.
Preparation :
Set JP4 to voltage input (1 - 2) and JP3 to without CJC (1 - 2). Also set JP1 to IN0.
Always allow a 15-minute warm-up period before starting adjustment.
Channels connected to CN1
<IN0 - IN7>
Voltage / current input
selection
<Voltage input>
CJC selection
<Without CJC>
123
JP4
23
JP3
8
JP1
9 101112131415IN
1234567IN
8
0
1
Figure 2.9 Setting condition
Adjustment :
(1) Input amplifier gain adjustment
The gain cannot be adjusted with jumper JP5 set to gain = 1.
To adjust the gain, set jumper JP5 to 2-3 to set gain = 200.
Connect the digital multi-meter between check pin CP4 and [-IN] for CH0. Input +10.0000V ÷
200 = 0.0500V to the input terminal and adjust trimmer VR5 until the digital multi-meter reads
+10.0000V.
(2) Isolated amplifier offset adjustment
Connect the digital multi-meter between CN1(pin 1) and CN1(pin 20). Input 0.0000V to the input
terminal and adjust trimmer VR3 until the digital multi-meter reads 0.0000V.
(3) Isolated amplifier gain adjustment
Adjust the isolated amplifier gain after first adjusting the offset. Connect the digital multi-meter
between CN1(pin 1) and CN1(pin 20). Input +10.0000V to the input terminal (or, 0.0500V if the
input gain is set to 200) and adjust trimmer VR4 until the digital multi-meter reads +10.0000V.
2. Hardware Setup
ATII-8C
15
(4) CJC circuit adjustment
Connect the digital multi-meter between check pins CP1 and CP3 (GND). For an ambient
temperature of 25
°
C, adjust trimmer VR1 until the digital multi-meter reads -0.050V. If the
ambient temperature (T) is not 25
°
C, use the following formula to calculate the expected voltage
value (V
CP1
) for the digital multi-meter. Adjust trimmer VR1 until the digital multi-meter reads
that value.
V
CP1
= -0.002 x T [V]
Next, connect the digital multi-meter between check pins CP2 and CP3 (GND). Adjust trimmer
VR2 until the digital multi-meter reads the expected value (V
CP2
) for the type of thermocouple
being used, as listed in table 5.
Table 2.5 Multi-meter Voltage (V
CP2
) for Each Thermocouple Type
Thermocouple Digital Multimeter Voltage VCP2 [V]
Type K thermocouple -2.025 x VCP1
Type J thermocouple -2.590 x VCP1
Type T thermocouple -2.030 x VCP1
Type E thermocouple -3.045 x VCP1
For example, if the ambient temperature is 30
°
C and a type K thermocouple is used, the CP1
voltage (V
CP1
) is -0.060V and the CP2 voltage (V
CP2
) is 0.1215V.
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