Mitsubishi Electric AJ65BT-68TD User manual

AJ65BT-68TD Thermocouple Temperature Input
Module
User's Manual
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SAFETY PRECAUTIONS
(Read these precautions before using this product.)
Before using this product, please read this manual and the relevant manuals carefully and pay full
attention to safety to handle the product correctly.
These precautions apply only to Mitsubishi equipment. Refer to the CPU module user's manual for a
description of the programmable controller system safety precautions.
In this manual, the safety precautions are classified into two levels: " WARNING" and " CAUTION".
Indicates that incorrect handling may cause hazardous conditions,
resulting in death or severe injury.
Indicates that incorrect handling may cause hazardous conditions,
resulting in minor or moderate injury or property damage.
Under some circumstances, failure to observe the precautions given under " CAUTION" may lead to
serious consequences.
Observe the precautions of both levels because they are important for personal and system safety.
Make sure that the end users read this manual and then keep the manual in a safe place for future
reference.
[Design Precautions]
WARNING
zIn the case of a communication failure in the network, data in the master module are held.
Check the communication status information (SB, SW) and configure an interlock circuit in the sequence
program to ensure that the entire system will operate safely.
CAUTION
zDo not install the control lines or communication cables together with the main circuit lines or power cables.
Keep a distance of 100mm (3.94 inches) or more between them.
Failure to do so may result in malfunction due to noise.
WARNING
CAUTION
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[Installation Precautions]
CAUTION
zUse the programmable controller in an environment that meets the general specifications in this manual.
Failure to do so may result in electric shock, fire, malfunction, or damage to or deterioration of the product.
zFor protection of the switches, do not remove the cushioning material before installation.
zSecurely fix the module with a DIN rail or mounting screws. Tighten the screws within the specified torque
range.
Undertightening can cause drop of the screw, short circuit or malfunction.
Overtightening can damage the screw and/or module, resulting in drop, short circuit, or malfunction.
zDo not directly touch any conductive part of the module.
Doing so can cause malfunction or failure of the module.
[Wiring Precautions]
CAUTION
zShut off the external power supply for the system in all phases before wiring.
Failure to do so may result in damage to the product.
zAfter installation or wiring, attach the included terminal cover to the module before turning it on for operation.
Undertightening can cause short circuit or malfunction.
zGround the FG terminals to the protective ground conductor dedicated to the programmable controller.
Failure to do so may result in malfunction.
zUse applicable solderless terminals and tighten them within the specified torque range.
If any spade solderless terminal is used, it may be disconnected when the terminal screw comes loose,
resulting in failure.
zCheck the rated voltage and terminal layout before wiring to the module, and connect the cables correctly.
Connecting a power supply with a different voltage rating or incorrect wiring may cause a fire or failure.
zTighten the terminal screw within the specified torque range.
Undertightening can cause short circuit or malfunction.
Overtightening can damage the screw and/or module, resulting in drop, short circuit, or malfunction.
zPrevent foreign matter such as dust or wire chips from entering the module.
Such foreign matter can cause a fire, failure, or malfunction.
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[Wiring Precautions]
CAUTION
zPlace the cables in a duct or clamp them.
If not, dangling cable may swing or inadvertently be pulled, resulting in damage to the module or cables or
malfunction due to poor contact.
zDo not install the control lines or communication cables together with the main circuit lines or power cables.
Failure to do so may result in malfunction due to noise.
zWhen disconnecting the cable from the module, do not pull the cable by the cable part.
Loosen the screws of connector before disconnecting the cable.
Failure to do so may result in damage to the module or cable or malfunction due to poor contact.
[Startup and Maintenance Precautions]
CAUTION
zDo not touch any terminal while power is on.
Doing so may cause malfunction.
zShut off the external power supply for the system in all phases before cleaning the module or retightening
the terminal screws.
Failure to do so may cause the module to fail or malfunction.
Undertightening the terminal screws can cause short circuit or malfunction.
Overtightening can damage the screw and/or module, resulting in drop, short circuit, or malfunction.
zDo not disassemble or modify the modules.
Doing so may cause failure, malfunction, injury, or a fire.
zDo not drop or apply strong shock to the module.
Doing so may damage the module.
zShut off the external power supply for the system in all phases before mounting or removing the module to
or from the panel.
Failure to do so may cause the module to fail or malfunction.
zAfter the first use of the product, do not mount/remove the terminal block to/from the module more than 50
times. (IEC 61131-2 compliant)
zBefore handling the module, touch a grounded metal object to discharge the static electricity from the
human body.
Failure to do so may cause the module to fail or malfunction.
[Disposal Precautions]
CAUTION
zWhen disposing of this product, treat it as an industrial waste.
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CONDITIONS OF USE FOR THE PRODUCT
(1) Mitsubishi programmable controller ("the PRODUCT") shall be used in conditions;
i) where any problem, fault or failure occurring in the PRODUCT, if any, shall not lead to any major or
serious accident; and
ii) where the backup and fail-safe function are systematically or automatically provided outside of the
PRODUCT for the case of any problem, fault or failure occurring in the PRODUCT.
(2) The PRODUCT has been designed and manufactured for the purpose of being used in general
industries.
MITSUBISHI SHALL HAVE NO RESPONSIBILITY OR LIABILITY (INCLUDING, BUT NOT LIMITED
TO ANY AND ALL RESPONSIBILITY OR LIABILITY BASED ON CONTRACT, WARRANTY, TORT,
PRODUCT LIABILITY) FOR ANY INJURY OR DEATH TO PERSONS OR LOSS OR DAMAGE TO
PROPERTY CAUSED BY the PRODUCT THAT ARE OPERATED OR USED IN APPLICATION
NOT INTENDED OR EXCLUDED BY INSTRUCTIONS, PRECAUTIONS, OR WARNING
CONTAINED IN MITSUBISHI'S USER, INSTRUCTION AND/OR SAFETY MANUALS, TECHNICAL
BULLETINS AND GUIDELINES FOR the PRODUCT.
("Prohibited Application")
Prohibited Applications include, but not limited to, the use of the PRODUCT in;
yNuclear Power Plants and any other power plants operated by Power companies, and/or any other
cases in which the public could be affected if any problem or fault occurs in the PRODUCT.
yRailway companies or Public service purposes, and/or any other cases in which establishment of a
special quality assurance system is required by the Purchaser or End User.
yAircraft or Aerospace, Medical applications, Train equipment, transport equipment such as Elevator
and Escalator, Incineration and Fuel devices, Vehicles, Manned transportation, Equipment for
Recreation and Amusement, and Safety devices, handling of Nuclear or Hazardous Materials or
Chemicals, Mining and Drilling, and/or other applications where there is a significant risk of injury to
the public or property.
Notwithstanding the above, restrictions Mitsubishi may in its sole discretion, authorize use of the
PRODUCT in one or more of the Prohibited Applications, provided that the usage of the PRODUCT is
limited only for the specific applications agreed to by Mitsubishi and provided further that no special
quality assurance or fail-safe, redundant or other safety features which exceed the general
specifications of the PRODUCTs are required. For details, please contact the Mitsubishi
representative in your region.
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Revisions
* The manual number is noted at the lower left of the back cover.
Print Date *Manual Number Revision
Apr., 1998 SH(NA)-3304-A First printing
Jul., 2005 SH(NA)-3304-B Addition
Conformation to the EMC Directive and Low Voltage Instruction, WARRANTY
Correction
SAFETY PRECAUTIONS, Section 2.2, 5
Dec., 2006 SH(NA)-3304-C Correction
SAFETY PRECAUTIONS, Section 2.1, 3.9.4, 4.3, Chapter 5
Dec., 2010 SH(NA)-3304-D Addition
CONDITIONS OF USE FOR THE PRODUCT
Correction
SAFETY PRECAUTIONS, About Manuals, Compliance with the EMC and
Low Voltage Directives, About Generic Terms and Abbreviations, Chapter 1,
Section 2.1, 2.2, 3.1, 3.2, 3.5, 3.8.1, 3.9.4, 4.2 to 4.4, 4.7, 5.1 to 5.3, 5.6, 6.1,
6.4, Appendix 4
Deletion
Section 4.7.1
Renumbering
Section 4.7.2 to 4.7.4 →Section 4.7.1 to 4.7.3
Japanese Manual Version SH-3651-F
This manual does not imply guarantee or implementation right for industrial ownership or implementation
of other rights. Mitsubishi Electric Corporation is not responsible for industrial ownership problems caused
by use of the contents of this manual.
©1998 Mitsubishi Electric Corporation
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Introduction
Thank you for purchasing the Mitsubishi Graphic Operation Terminal.
Before using the equipment, please read this manual carefully to develop full familiarity with the functions and
performance of the graphic operation terminal you have purchased, so as to ensure correct use.
Please forward a copy of this manual to the end user.
Table of Contents
1. OVERVIEW 1-1
1.1 Features............................................................................................................................................................ 1- 1
2. SYSTEM CONFIGURATION 2-1 to 2-2
2.1 Overall Configuration ........................................................................................................................................ 2- 1
2.2 Applicable System ............................................................................................................................................ 2- 2
3. SPECIFICATIONS 3-1 to 3-24
3.1 General Specification........................................................................................................................................ 3- 1
3.2 Performance Specifications .............................................................................................................................. 3- 2
3.3 Temperature/Digital Conversion Characteristics............................................................................................... 3- 4
3.4 Maximum Transmission Distance over the CC-Link System ............................................................................ 3- 4
3.5 Data Link Processing Time. .............................................................................................................................. 3- 5
3.6 Twisted Cable Specifications ............................................................................................................................ 3- 6
3.7 Function List...................................................................................................................................................... 3- 7
3.8 I/O Signals in Respect to the Master Module.................................................................................................... 3- 8
3.8.1 I/O signal list .......................................................................................................................................... 3- 8
3.8.2 I/O signal functions ................................................................................................................................ 3-11
3.8.3 Wire breakage detection........................................................................................................................ 3-16
3.8.4 Conversion enable/disable designation ................................................................................................. 3-17
3.8.5 Sampling processing/travel average processing designation................................................................ 3-18
3.8.6 Thermocouple type selection................................................................................................................. 3-20
3.8.7 Pt100 cold junction compensation enable/disable designation ............................................................. 3-21
3.9 Remote Register ............................................................................................................................................... 3-22
3.9.1 Remote register assignment.................................................................................................................. 3-22
3.9.2 High and low limit settings ..................................................................................................................... 3-23
3.9.3 Detected temperature value .................................................................................................................. 3-24
3.9.4 Scaling value ......................................................................................................................................... 3-24
4. SETTING AND PROCEDURE BEFORE OPERATION 4-1 to 4-10
4.1 Procedure before Operation ............................................................................................................................. 4- 1
4.2 Handling Precautions........................................................................................................................................ 4- 2
4.3 Part Identification and Setting ........................................................................................................................... 4- 3
4.4 Error Compensation by the Offset Value/Gain Value Setting ........................................................................... 4- 5
4.4.1 Initial settings for error compensation.................................................................................................... 4- 6
4.4.2 Error compensation procedure .............................................................................................................. 4- 7
4.5 Station Number Setting..................................................................................................................................... 4- 8
4.6 Orientation of Module Installation ..................................................................................................................... 4- 8
4.7 Wiring................................................................................................................................................................ 4- 9
4.7.1 Wiring example with CC-Link modules .................................................................................................. 4- 9
4.7.2 Precautions when wiring to a thermocouple .......................................................................................... 4-10
4.7.3 Wiring example with thermocouple........................................................................................................ 4-10
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5. PROGRAMMING 5-1 to 5-21
5.1 Programming Procedure................................................................................................................................... 5- 1
5.2 Program Example Conditicons.......................................................................................................................... 5- 2
5.3 Program Eamples when QCPU(Q Mode) Is Used ............................................................................................ 5- 5
5.4 Program Eamples when QnACPU is Used ....................................................................................................... 5-13
5.5 Program Eamples when ACPU/QCPU(A Mode) Is Used (Dedicated Instructions)........................................... 5-16
5.6 Program Eamples when ACPU/QCPU(A Mode) Is Used (FROM/TO Instructions)........................................... 5-19
6. TROUBLESHOOTING 6-1 to 6-5
6.1 Cause of Errors and Corrective Actions by LED Indication............................................................................... 6- 1
6.2 When Wire Breakage Detection Flag is On...................................................................................................... 6- 3
6.3 When E2PROM Error Flag is On....................................................................................................................... 6- 3
6.4 When Detected Temperature Value cannot be Read ....................................................................................... 6- 3
6.5 When Detected Temperature Value is Abnormal ............................................................................................. 6- 3
6.6 When There is a Communication Error between Master Station and AJ65BT-68TD ....................................... 6- 4
APPENDIX A-1 to A-28
Appendix 1 Usual Operation Limits and Superheated Operating Limits .................................................................. A- 1
Appendix 2 Allowable Temperature Differences ...................................................................................................... A- 1
Appendix 3 Thermal Electromotive Force Chart ...................................................................................................... A- 2
Appendix 3.1 Standard Thermal Electromotive Force of B ............................................................................. A- 2
Appendix 3.2 Standard Thermal Electromotive Force of R............................................................................. A- 6
Appendix 3.3 Standard Thermal Electromotive Force of S ............................................................................. A-10
Appendix 3.4 Standard Thermal Electromotive Force of K ............................................................................. A-14
Appendix 3.5 Standard Thermal Electromotive Force of E ............................................................................. A-18
Appendix 3.6 Standard Thermal Electromotive Force of J.............................................................................. A-21
Appendix 3.7 Standard Thermal Electromotive Force of T ............................................................................. A-25
Appendix 4 External Dimensions Diagram............................................................................................................... A-27
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About Manuals
The following are manuals related to this product.
Request for the manuals as needed according to the chart below.
Related Manuals
Manual Name Manual No.
(Type code)
CC-Link System Master/Local Module Type AJ61BT11/A1SJ61BT11 User's Manual
This manual explains about the system configuration, performance specifications, functions,
handling, wiring and troubleshooting of AJ61BT11and A1SJ61BT11. (Sold separately)
IB-66721
(13J872)
CC-Link System Master/Local Module Type AJ61QBT11/A1SJ61QBT11 User's Manual
This manual explains about the system configuration, performance specifications, functions,
handling, wiring and troubleshooting of AJ61QBT11and A1SJ61QBT11. (Sold separately)
IB-66722
(13J901)
CC-Link System Master/Local Module User's Manual
Describes the system configuration, performance specifications, functions, handling, wiring and
troubleshooting of the QJ61BT11N. (Sold separately)
SH-080394E
(13JR64)
Type AnSHCPU/AnACPU/AnUCPU/QCPU-A (A Mode) Programming Manual
(Dedicated Instructions)
Describes the instructions extended for the AnSHCPU/AnACPU/AnUCPU. (Sold separately)
IB-66251
(13J742)
MELSEC-L CC-Link System Master/Local Module User's Manual
Describes the system configuration, Performance specifications, functions, handling, wiring
and troubleshooting of the L26CPU-BT and LJ61BT11. (Sold separately)
SH-080895ENG
(13JZ41)
Compliance with the EMC and Low Voltage Directives
(1) For programmable controller system
To configure a system meeting the requirements of the EMC and Low Voltage
Directives when incorporating the Mitsubishi programmable controller (EMC and
Low Voltage Directives compliant) into other machinery or equipment, refer to
the "EMC AND LOW VOLTAGE DIRECTIVES" chapter of the User's Manual for
the CPU module used.
The CE mark, indicating compliance with the EMC and Low Voltage Directives,
is printed on the rating plate of the programmable controller.
(2) For the product
For the compliance of this product with the EMC and Low Voltage Directives,
refer to the "CC-Link module" section in the "EMC AND LOW VOLTAGE
DIRECTIVES" chapter of the User's Manual for the CPU module used.
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About Generic Terms and Abbreviations
Unless otherwise specified, this manual uses the following generic terms and abbreviations to
explain the AJ65BT-68TD Thermocouple Input Module. Temperature input module.
Generic Term/
Abbreviation
Description
GX Developer
GX Works2
Product name of the software package for the MELSEC programmable controllers.
ACPU Generic term for A0J2CPU, A0J2HCPU, A1CPU, A2CPU, A2CPU-S1, A3CPU, A1SCPU,
A1SCPUC24-R2, A1SHCPU, A1SJCPU, A1SJCPU-S3, A1SJHCPU, A1NCPU, A2NCPU,
A2NCPU-S1, A3NCPU, A3MCPU, A3HCPU, A2SCPU, A2SHCPU, A2ACPU, A2ACPU-S1,
A3ACPU, A2UCPU, A2UCPU-S1, A2USCPU, A2USCPU-S1, A2USHCPU-S1, A3UCPU and
A4UCPU.
QnACPU Generic term for Q2ACPU, Q2ACPU-S1, Q2ASCPU, Q2ASCPU-S1, Q2ASHCPU,
Q2ASHCPU-S1, Q3ACPU, Q4APU and Q4ARCPU.
QCPU (A mode) Generic term for Q02CPU-A, Q02HCPU-A and Q06HCPU-A.
QCPU (Q mode) Generic term for Q00JCPU, Q00CPU, Q01CPU, Q02CPU, Q02HCPU, Q06HCPU,
Q12HCPU, Q25HCPU, Q02PHCPU, Q06PHCPU, Q12PHCPU, Q25PHCPU,
Q12PRHCPU, Q25PRHCPU, Q00UJCPU, Q00UCPU, Q01UCPU, Q02UCPU,
Q03UDCPU, Q04UDHCPU, Q06UDHCPU, Q10UDHCPU, Q13UDHCPU,
Q20UDHCPU, Q26UDHCPU, Q03UDECPU, Q04UDEHCPU, Q06UDEHCPU,
Q10UDEHCPU, Q13UDEHCPU, Q20UDEHCPU, Q26UDEHCPU. Q50UDEHCPU and
Q100UDEHCPU.
LCPU Generic term for L02CPU, L26CPU-BT.
Master station Station that controls a data link system.
One station is required for one system.
Local station Station that has a programmable controller CPU and can communicate with the master
station and other local stations.
Remote I/O station Station that handles only bit unit information. (Input/output from/to external device)
(AJ65BTB1-16D, AJ65SBTB1-16D, etc.)
Remote device
station
Station that handles bit unit information and word unit information. (Input/output from/to
external device, analog data conversion)
Remote station Generic term for remote I/O station and remote device station. Controlled by the master
station.
Intelligent device
station
Station that can perform transient transmission, e.g. AJ65BT-R2. (Local station included)
Master module Generic term for modules that can be used as the master station.
SB Link special relay (for CC-Link)
Bit unit information that indicates the module operation status or data link status of the
master station/local station. Represented as SB for convenience.
SW Link special register (for CC-Link)
16-bit unit information that indicates the module operation status or data link status of the
master station/local station. Represented as SW for convenience.
RX Remote input (for CC-Link)
Information input from a remote station to the master station in bit unit. Represented as RX
for convenience.
RY Remote output (for CC-Link)
Information output from the master station to a remote station in bit unit. Represented as RY
for convenience.
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Generic Term/
Abbreviation
Description
RWw Remote register (write area for CC-Link)
Information output from the master station to a remote device station in 16-bit unit.
Represented as RWw for convenience.
RWr Remote register (read area for CC-Link)
Information input from a remote device station to the master station in 16-bit unit.
Represented as RWr for convenience.
Packing List
This product consists of the following items.
Product name Quantity
AJ65BT-68TD thermocouple input module 1
AJ65BT-68TD Thermocouple Temperarure Input Module User’s Manual (Hardware) 1
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1. OVERVIEW MELSEC-A
1-1
1. OVERVIEW
This user's manual explains the specifications, handling, programming methods, etc. of the AJ65BT-
68TD Thermocouple Input Module (hereinafter referred to as AJ65BT-68TD) used as a remote device
station for the CC-Link system.
The AJ65BT-68TD is a module that converts the thermocouple input values from outside the
programmable controller to the temperature values or scaling values of 16-bit signed BIN data.
1.1 Features
The following are the features of the AJ65BT-68TD.
(1) Temperature – digital conversion is possible at eight channels in one module
One AJ65BT-68TD module may perform up to eight channels of temperature – digital
conversions.
(2) Thermocouples conforming the JIS standard may be used.
Seven types of thermocouples (K, E, J, T, B, R and S) that conform to the JIS standard may be
used.
Also, a thermocouple may be chosen independently for each channel
(3) Conversion enabling and disabling
Conversion may be enabled or disabled for each individual channel. By disabling the conversion
of channels that are not used, generation of unnecessary wire breakage detection flags may be
prevented and sampling time may be reduced.
(4) Wire breakage detection is possible
The thermocouple and compensating conductor breakage may be detected for each channel.
(5) Sampling processing and travel average processing may be designated
As a conversion processing method, sampling processing and travel average processing may
designated for each channel.
(6) Cold junction compensation is possible using Pt100 temperature-measuring resistor
Since a Pt100 temperature-measuring resistor is connected, cold junction compensation is
performed automatically.
(7) Pt100 cold junction compensation enable/disable setting is possible
By disabling the cold junction compensation by the Pt100 temperature-measuring resistor, cold
junction compensation may be performed at outside the module.
If the cold junction compensation accuracy ±1 °C of the Pt100 temperature-measuring resistor
may not be ignored as a tolerance, cold junction compensation accuracy may be increased by
installing a high-accuracy ice bus to outside of the module.
(8) Error compensation can be performed by setting the offset/gain value
Error compensation may be performed individually at each channel by setting the offset/gain
value.
Also, the offset/gain value may be selected to use a user setting value or factory setting value.
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2. SYSTEM CONFIGURATION MELSEC-A
2-1
2. SYSTEM CONFIGURATION
System configuration when using the AJ65BT-68TD is explained below.
2.1 Overall Configuration
The overall configuration when using the AJ65BT-68TD is shown below.
The maximum overall distance for the system is as follows
(varies depending on transmission speed setting).
156 kbps : 1200 m (3937 ft.) 5 Mbps : 150 m (492.1 ft.)
625 kbps : 600 m (1968.5 ft.) 10 Mbps : 100 m (328.1 ft.)
2.5 Mbps : 200 m (656.2 ft.)
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2. SYSTEM CONFIGURATION MELSEC-A
2-2
2.2 Applicable System
This section explains the applicable system.
(1) Applicable master modules
For available master modules, visit the CC-Link Partner Association (CLPA) website at:
http://www.cc-link.org/
REMARK
Check the specifications of the master module before use
(2) Restrictions on use of CC-Link dedicated instructions (RLPA, RRPA)
The CC-Link dedicated instructions may not be used depending on the programmable controller
CPU and master module used.
For details of the restrictions, refer to the A series master module user's manual, and the
Programing Manual type AnSHCPU/AnACPU/AnUCPU/QCPU (A mode) (Dedicated Instructions).
This module does not allow the use of the dedicated instructions other than RLPA and RRPA.
Refer to Section 5.5 for a program example using the dedicated instructions (RLPA, RRPA).
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3. SPECIFICATIONS MELSEC-A
3-1
3. SPECIFICATIONS
This section explains the AJ65BT-68TD the general specifications, performance specifications, and
transmission specifications.
3.1 General Specification
This section explains the AJ65BT-68TD general specifications.
Item Specifications
Ambient operating
temperature 0 to 55 °C
Ambient storage temperature -20 to 75 °C
Ambient operating humidity 10 to 90 %RH, Non-condensing
Ambient storage humidity 10 to 90 %RH, Non-condensing
Frequency Acceleration Amplitude Sweep count
5 to 9Hz — 3.5mm
(0.14inches)
Vibration resistance 9 to 150Hz 9.8 m/s2(1 G) —
5 to 9Hz — 1.75mm
(0.069inches)
9 to 150Hz 4.9 m/s2(0.5 G) —
Shock resistance Conforming to JIS B 3502, IEC 61131-2
(147 m/s2(15 G), 3 times in each of 3 directions X Y Z)
Operating ambience No corrosive gases
Operating elevation*3 2000 m (6562 ft.) max.
Installation location Control panel
Over voltage category *1 II max.
Pollution level *2 2 max.
*1 : This indicates the section of the power supply to which the equipment is assumed to be
connected between the public electrical power distribution network and the machinery within the
premises. Category II applies to equipment for which electrical power is supplied from fixed
facilities. The surge voltage withstand level for up to the rated voltage of 300 V is 2500 V.
*2 : This index indicates the degree to which conductive material is generated in terms of the
environment in which the equipment is used. Pollution level 2 is when only non-conductive
pollution occurs. A temporary conductivity caused by condensation must be expected
occasionally.
*3 : Do not use or store the programmable controller under pressure higher than the atmospheric
pressure of altitude 0m.
Doing so can cause a malfunction.
When using the programmable controller under pressure, please contact your sales
representative.
10 times each in
X, Y, Z
directions
Conforming to
JIS B 3502,
IEC 61131-2
For intermittent
vibration
For continuous
vibration
—
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3. SPECIFICATIONS MELSEC-A
3-2
3.2 Performance Specifications
The performance specifications of the AJ65BT-68TD are shown below.
Item Specifications
Temperature sensor input -200 to 1700 °C
Output
Detected
temperature
Scaling value 16-bit signed binary (0 to 2000)
Applicable thermocouples
and temperature
measurement range accuracy
Cold junction compensation
accuracy
Overall accuracy Depends on *1 calculation expression
Maximum resolution B, R, S : 0.3 °C K, E, J, T : 0.1 °C
Conversion speed
(sampling time)
Absolute maximum input ± 5 V
Number of analog input
points 8 channels + Pt100 connection channel
Thermocouple input to CC-Link transmission : Transformer insulation
Between channels : Transformer insulation
16-bit signed binary (-2000 to 17000 : value to one decimal place multiplied by 10)
± 1.0 °C
45 ms/channel *2 ms/ch
Insulation method
Applicable
thermocouple
type
Temperature
measuremen
t range [°C ]
Conversion accuracy
(When ambient operating
temperature is 25 ±5 °C)
Temperature characteristic
(Per 1 °C of ambient operating
temperature change)
B 600 to 1700 ± 2.5 °C ± 0.4 °C
0 to 200 ± 0.4 °C
200 to 1600 ± 0.3 °C
0 to 200 ± 0.4 °C
200 to 1600 ± 0.3 °C
±0.06 °C or ±0.3 % of the measured
temperature, whichever is greater
±0.06 °C or ±0.02 % of the measured
temperature, whichever is greater
±0.06 °C or ±0.3 % of the measured
temperature, whichever is greater
±0.06 °C or ±0.02 % of the measured
temperature, whichever is greater
±0.06 °C or ±0.02 % of the measured
temperature, whichever is greater
±0.06 °C or ±0.3 % of the measured
temperature, whichever is greater
±0.06 °C or ±0.02 % of the measured
temperature, whichever is greater
±0.5 °C or ±0.25 % of the
measured temperature,
whichever is greater
± 2.0 °C
± 2.0 °C
0 to 350
-200 to 0
0 to 750
0 to 800
-200 to 0
-200 to 0
0 to 1200
S
T
J
E
K
R
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3. SPECIFICATIONS MELSEC-A
3-3
Item Specifications
CC-Link station type Remote device station
Number of occupied stations 4 Stations : RX/RY 128 points each RWw/RWr 16 points each
Transmission
speed/maximum
transmission distance
Refer to Section 3.4
Maximum number of
connected modules
Connection cable CC-Link dedicated cable
Depends on noise simulator of noise voltage at 500 Vp-p, noise width at 1 ms and noise
frequency at 25 to 60 Hz
Between batch power supply system and ground
Between batch power supply system and batch communication system
Between batch communication system and batch thermocouple input
Between batch thermocouple input and ground
Between batch power supply system and ground
Between batch power supply system and batch communication system
Between batch communication system and batch thermocouple input
Between batch thermocouple input and ground
Connected terminal block 27-point terminal blocks (M3.5 × 7 screws)
Applicable wire size 0.75 to 2.00 mm2
Applicable solderless terminal RAV 1.25-3.5, RAV 2-3.5 (conforms to JIS C 2805)
Allowable momentary power
failure period
Screws M4 × 0.7 mm × 16 mm or larger (tightening torque range 78 to 118 N · cm {8 to 12 kg · cm})
May be attached using DIN rails
Applicable DIN rail TH35-7.5Fe, TH35-7.5AI, TH35-15Fe (conforms to JIS C 2812 )
External power supply 24V DC (18 to 30V DC)
Internal consumption current 0.081 A
Weight 0.40 (0.88) kg (lb)
*1 Overall accuracy computation method is as follows:
(Overall accuracy) = (Conversion accuracy) + (Temperature characteristics) × (Ambient operating
temperature change) + (Cold junction compensation accuracy)
The ambient operating temperature change refers to the value that falls outside the range of 25 ±5 °C.
Example) The overall accuracy when using thermocouple K, measured temperature 150 °C,
ambient operating temperature 35 °C will be:
(±0.5 °C) + (±0.06 °C) × (5 °C) + (±1 °C) = ±1.8 °C
*2 Conversion speed is the time required to convert the input temperature to the corresponding digital
value and store it into the remote register.
When using multiple channels, the conversion speed becomes "45ms × number of channels that
are conversion enabled".
16 modules
1 ms
Noise durability
Module installation screw
Insulation resistor
500 V AC, 1 minute
500 V DC, more than 10 M Ω
by the insulation resistance taster
Dielectric withstand voltage
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3. SPECIFICATIONS MELSEC-A
3-4
3.3 Temperature/Digital Conversion Characteristics
Since the thermal electromotive force has a non-linear characteristic, it must undergo the linearize
processing before being written in the remote register.
An example of detected temperature characteristic in respect to the thermocouple input value is shown
below.
(1200 °C) 12000
48828 [ µV ]
(1200 °C)
0
0
(0 °C)
(
0 °C
)
V
The diagram at left is an example
of temperature conversion
characteristic example under
the conditions shown below:
Thermocouple used : JIS K type
Terminal block temperature : 0 [°C]
Temperature
conversionvalue
Thermal
electromotive force
Thermocouple
output characteristic
3.4 Maximum Transmission Distance over the CC-Link System
The maximum transmission distance over the CC-Link system is shown below.
1) Regardless of the setting of the transmission speed, the cable length must be "greater than 2 m
(6.6 ft.)" long between a mater or local station, intelligent device station and the adjacent stations.
2) For 5 Mbps and 10 Mbps transmission speeds, the maximum transmission distance will differ
according to the cable length between the remote I/O station and remote device station, so
exercise caution.
Master
station
Remote I/O station
Remote device station
Remote I/O station
Remote device station
Remote I/O station
Remote device station
Remote I/O station
Remote device station
Local station
Standby master
station
Intelligent device
station
Local station
Standby master
station
Intelligent device
station
1) 1)2) 2)1)
Maximum transmission distance
Maximum transmission
distance
156 kbps 30 cm (11.8 in.) or more 1200 m (3937 ft.)
625 kpbs 30 cm (11.8 in.) or more 600 m (1968.5 ft.)
2.5 Mpbs 30 cm (11.8 in.) or more 200 m (656.2 ft.)
60 cm (23.6 in.) or more 150 m (492.1 ft.)
30 to 59 cm (11.8 to 23.2 in.) 110 m (360.9 ft.)
1 m (3.3 ft.) or more 100 m (328.1 ft.)
10 Mbps 60 to 99 cm (23.6 to 39 in.) 80 m (262.5 ft.)
30 to 59 cm (11.8 to 23.2 in.) 50 m (164 ft.)
2)1)Transmission speed
2 m (6.6 ft.) or more5 Mbps
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3. SPECIFICATIONS MELSEC-A
3-5
3.5 Data Link Processing Time
For the AJ65BT-68TD, the data link processing time shown below will be required in order to execute
each function.
For details on link scan time, refer to the AJ61BT11/A1SJ61BT11 CC-Link System Master/Local
Module User's Manual or the AJ61QBT11/A1SJ61QBT11 CC-Link System Master/Local Module
User's Manual.
(1) Mater station (RY) →Remote device station (RY) processing time
[Expression]
SM + LS × 3 + Remote device station processing time (90 ms) [ms]
AJ65BT-68TD
SM : Master station sequence program scan time
LS : Link scan time
(2) Master station (RWw) →Remote device station (RWw) processing time
[Expression]
SM + LS × 3 + Remote device station processing time (90 ms) [ms]
AJ65BT-68TD
SM : Master station sequence program scan time
LS : Link scan time
(3) Master station (RX) ←Remote Device Station (RX) Processing Time
[Expression]
SM + LS × 2 + Remote device station processing time (1 ms) [ms]
AJ65BT-68TD
SM : Master station sequence program scan time
LS : Link scan time
(4) Master station (RWr) ←Remote Device Station (RWr) Processing Time
[Expression]
SM + LS × 2 + Remote device station processing time (1 ms) [ms]
AJ65BT-68TD
SM : Master station sequence program scan time
LS : Link scan time
POINT
The above are examples of processing time until the control of the output signal to the AJ65BT-
68TD from the programmable controller CPU or until input signals or remote registers are read.
The maximum time that takes for updating the detected temperature read by the programmable
controller CPU is "data link processing time + sampling time."
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