Mitsubishi Q68TD-G-H01 User manual

User’s Manual
(Hardware)
Q68TD-G-H01
Thank you for purchasing the Mitsubishi programmable controller
MELSEC-Q series.
© 2007 MITSUBISHI ELECTRIC CORPORATION
Channel Isolated Thermocouple
Input Module
Prior to use, please read this and relevant manuals thorougly to fully
understand the product.
MODEL Q68TD-G-H01-U-HW
MODEL
CODE 13JY36
IB(NA)-0800389-B(0810)MEE

A-1
SAFETY PRECAUTIONS
(Read these precautions before use.)
Before using this product, please read this manual and the relevant manuals
introduced in this manual carefully and pay full attention to safety to handle the
product correctly.
The instructions given in this manual are concerned with this product. For the
safety instructions of the programmable controller system, please read the User’s
Manual for the CPU module.
In this section, the safety precautions are ranked as "DANGER" and "CAUTION".
Note that the CAUTION level may lead to a serious consequence according
to the circumstances.
Always follow the precautions of both levels because they are important to
personal safety.
Please keep this manual accessible when required and always forward it to the
end user.
[DESIGN PRECAUTIONS]
DANGER
Do not write data into the "system area" of the buffer memory of intelligent
function modules. Also, do not use any "prohibited to use" signals as an
output signal to an intelligent function module from the programmable
controller CPU.
Writing data into the "system area" or outputting a signal for "prohibited to
use" may cause a programmable controller system malfunction.
DANGER
Indicates that incorrect handling may cause
hazardous conditions, resulting in death or severe
injury.
Indicates that incorrect handling may cause
hazardous conditions, resulting in medium or slight
personal injury or physical damage.
CAUTION

A-2
[INSTALLATION PRECAUTIONS]
CAUTION
Do not bunch the control wires or communication cables with the main circuit
or power wires, or install them close to each other.
They should be installed 100 mm (3.94 inch) or more from each other.
Not doing so could result in noise that may cause malfunction.
CAUTION
Use the programmable controller in the environment conditions given in the
general specifications in the User's Manual for the CPU module. Failure to do
so may cause an electric shock, fire, malfunction, or damage to or
deterioration of the product.
While pressing the installation lever located at the bottom of the module, fully
insert the module fixing projection into the fixing hole in the base unit to
mount the module. Incorrect module mounting may cause a malfunction,
failure, or drop of the module. In an environment of frequent vibrations or
impacts, secure the module with screws.
The screws must be tightened within the specified torque range. If the screw
is too loose, it may cause a drop or malfunction. Excessive tightening may
damage the screw and/or the module, resulting in a drop or malfunction.
Be sure to shut off all phases of the external power supply used by the
system before mounting or removing the module. Failure to do so may cause
damage to the product.
Do not directly touch any conductive part or electronic part of the module.
Doing so may cause a malfunction or failure of the module.

A-3
[WIRING PRECAUTIONS]
CAUTION
Always ground the shielded cables for the programmable controller.
There is a risk of electric shock or malfunction.
For wiring and connection, properly press, crimp or solder the connector with
the tools specified by the manufactures and attach the connector to the
module securely.
Be careful to prevent foreign matter such as dust or wire chips from entering
the module.
Failure to do so may cause a fire, failure or malfunction.
A protective film is attached to the module top to prevent foreign matter such
as wire chips from entering the module during wiring.
Do not remove the film during wiring.
Be sure to remove it for heat dissipation before system operation.
Be sure to place the cables connected to the module in a duct or clamp them.
If not, dangling cables may swing or inadvertently be pulled, resulting in
damage to the module and/or cables, or malfunctions due to poor cable
connection.
When disconnecting the external wiring cable connected to the module, do
not pull it by holding the cable part. Disconnect the cable with connector with
holding the connector plugged into the module. Pulling the cable part with the
cable still connected to the module may cause a malfunction or damage to
the module and/or cable.
Always place the thermocouple at least 100mm (3.94inch) away from the
main circuit cables and AC control lines. Fully keep it away from highvoltage
cables and circuits, which include high frequency waves, such as an
inverter's load circuit. Not doing so will cause the module more susceptible to
noises, surges and inductions.
Do not place a module near the equipment that generates magnetic noise.

A-4
Revisions
* The manual number is given on the bottom right of the cover.
© 2007 MITSUBISHI ELECTRIC CORPORATION
Print Date *Manual Number Revision
Jul., 2007 IB(NA)-0800389-A First edition
Oct., 2008 IB(NA)-0800389-B Partly modified
EMC and Low Voltage Directives
Section 1.1, Chapter 2, Section 3.1, 5.1, 5.2, 5.3
This manual confers no industrial property rights or any rights of any other kind, nor does it
confer any patent licenses. Mitsubishi Electric Corporation cannot be held responsible for any
problems involving industrial property rights which may occur as a result of using the contents
noted in this manual.

A-5
CONTENTS
1. OVERVIEW .................................................................................................... 1
1.1 Restrictions on mountable slot position .................................................... 1
2. PERFORMANCE SPECIFICATIONS ............................................................. 3
3. IMPLEMENTATION AND INSTALLATION..................................................... 6
3.1 Handling Precautions ............................................................................... 6
3.2 Installation Environment ........................................................................... 6
4. PART NAMES ................................................................................................ 7
5. WIRING .......................................................................................................... 9
5.1 Wiring Precautions ................................................................................... 9
5.2 External Wiring ....................................................................................... 10
5.3 Intelligent Function Module Switch Settings........................................... 11
6. EXTERNAL DIMENSIONS ........................................................................... 12

A-6
ABOUT MANUAL
The following manual is also related to this product.
In necessary, order it by quoting the details in the table below.
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 Diretives when incorporating the Mitsubishi
programmable controller (EMC and Low Voltage Directives
compliant) into other machinery or equipment, refer to Chapter 9
"EMC AND LOW VOLTAGE DIRECTIVES" of the QCPU User's
Manual (Hardware Design, Maintenance and Inspection).
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 Section 5.1 "Wiring Precautions".
Related manual
Manual name Manual No.
(Model code)
Channel Isolated Thermocouple Input Module
Q68TD-G-H01/GX Configurator-TI (SW1D5C-QTIU)
SH-080699ENG
(13JZ04)

1
1. OVERVIEW
This manual describes the specifications and part names of the Q68TD-
G-H01 Channel Isolated Thermocouple Input channel isolated
thermocouple input module (hereinafter abbreviated referred to as
Q68TD-G-H01) that is used with the MELSEC-Q series CPU module.
1.1 Restrictions on mountable slot position
(1) Restriction of combination use of Q68TD-G-H01 and Q68TD-G-
H02
When mounting the Q68TD-G-H01 and Q68TD-G-H02 on the base
unit, leave one slot or more than one slot of space between the
Q68TD-G-H01 and the Q68TD-G-H02.
(2) Restrictions on mountable slot position of Q68TD-G-H01
The Q68TD-G-H01 has restrictions on mountable slot position.
The following describes the restrictions of the slot position when
mounting the Q68TD-G-H01 with a combination of the power
supply module and the base unit.
For the slot that the Q68TD-G-H01 cannot be mounted, leave the
slot open or mount a module other than the Q68TD-G-H01.
The Q68TD-G-H01 has no restrictions of the combination between
a power supply module and a base unit other than the combination
listed below.
When using the Q68TD-G-H01 on the remote I/O station, the
restriction is the same as for the main base unit.
When failing to comply with the following restrictions, the accuracy
might not be in the specification range.
Power supply module Restrictions
Main base unit Extension base unit
Q63P No restrictions Mount the module to I/O slot
No.1 or later. (b)
Q63RP
Q64P Mount the module to I/O slot
No.1 or later. (a)
Mount the module to I/O slot
No.2 or later. (c)
Q64RP

2
(a)
Figure 1.1 Mountable slot position of Q68TD-G-H01
(b)
Figure 1.2 Mountable slot position of Q68TD-G-H01
(c)
Figure 1.3 Mountable slot position of Q68TD-G-H01
OUT
I/01 I/01
CPU
Slot
No.0
Not mountable Mountable
Power
supply Slot
No.1
Slot
No.2
OUT
I/01 I/01
IN
Slot
No.0
Not mountable Mountable
Power
supply Slot
No.1
Slot
No.2
OUT
IN
I/01 I/01
Slot
No.0
Not mountable Mountable
Slot
No.1
Slot
No.2
Power
supply

3
2. PERFORMANCE SPECIFICATIONS
The following are the performance specifications of the Q68TD-G-H01.
(1) Performance specification list
Table 2.1 List of performance specifications
Item Specifications
Number of channels 8 channels
Output
Temperature
conversion value 16-bit signed binary (-2700 to 18200)
Scaling value 16-bit signed binary
Standard with which
thermocouple conforms JIS C1602-1995,IEC 60584-1(1995),IEC60584-2(1982)
Usable thermocouples and
conversion accuracies *1 Refer to (2)
Cold junction temperature
compensation accuracy *1 1.0
Accuracy *1 Depends on the formula listed in *2
Resolution B,R,S,N : 0.3 K,E,J,T : 0.1
Conversion speed *3 320ms/8 channels
Sampling period *4 320ms/8 channels
Number of analog input points 8 channels + cold junction temperature compensation channel/module
Isolation specifications
Disconnection detection Not available *5
Maximum number of writes for
Flash memory 50,000
Number of I/O points occupied 16 points (I/O assignment:Intelligent 16 points)
External wiring connection
system 40-pin connector
Applicable wire size 0.3mm2(AWG#22) or less
External device connection
connector (option) A6CON4
Internal current consumption
(5 VDC) 0.49A
Weight 0.18kg
External dimensions 98(H) 27.4(W) 90(D)mm
Specific isolated area Isolation
method
Dielectric
withstand
voltage
Isolation
resistance
Between thermocouple
input and programmable
controller power supply
Transformer
isolation
500VACrms
for 1min. 500VDC
10M
or more
Between thermocouple
input channels
Transformer
isolation
1000VACrms
for 1min.
Between cold junction
temperature compensation
channel and programmable
controller power supply
No insulation - -