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Table 3.1 Applicable thermocouples and temperature measurement range
accuracy
Applicable
Temperature
Conversion accuracy
Temperature characteristic
thermocouple
measurement
(When ambient
(Per 1 °C of ambient operating
type
range [°C ]
operating 25 ± 5 °C)
temperature change)
B
600 to 1700
± 2.5 °C
± 0.4 °C
0 to 200
± 0.4 °C
R
± 2.0 °C
200 to 1600
± 0.3 °C
0 to 200
± 0.4 °C
S
± 2.0 °C
200 to 1600
± 0.3 °C
±0.06 °C or ±0.3 % of the measured
– 200 to 0
temperature, whichever is greater
K
±0.06 °C or ±0.02 % of the
0 to 1200
measured temperature, whichever
is greater
±0.06 °C or ±0.3 % of the measured
– 200 to 0
temperature, whichever is greater
E
±0.5 °C or ±0.25 % of
±0.06 °C or ±0.02 % of the
the measured
0 to 800
measured temperature, whichever
temperature, whichever
is greater
is greater
±0.06 °C or ±0.02 % of the
J
0 to 750
measured temperature, whichever
is greater
±0.06 °C or ±0.3 % of the measured
– 200 to 0
temperature, whichever is greater
T
±0.06 °C or ±0.02 % of the
0 to 350
measured temperature, whichever
is greater
4. Name of Each Part
The name of each part in the AJ65BT-68TD is described.
2)
1)
B RATE
STATION NO.
MITSUBISHI
MELSEC
A
J65BT-68TD
X10
X1
0 1
0 1
0 1
9
PW
2
2
8
2
3
3
7
3
RUN
4
6
5
4
6
5
4
L RUN
SW
MODE
MODE OFFSET UP
RESET
SD
0
NORMAL
0 1
SET
RD
9
1-8
TEST CH.
8
2
6)
L ERR.
7
3
9
TEST
6
4
5
GAIN DOWN
5)
8)
7) 3) 4)
9)
Number
Name
1)
Station setting switch
2)
Transmission baud rate setting switch
3)
Mode switch
4)
Offset/gain setting switch
5)
UP/DOWN switch
6)
Reset switch
PW
RUN
L RUN
7)
LED display
SD
RD
L ERR.
8)
Terminal block
9)
Temperature-measuring resistor Pt 100
5. Handling
5.1
Handling Precautions
(1) Because it is made of resin, do not drop or given a strong shock to the
module case and the terminal block.
(2) Do not take the printed circuit board of the module out of the case. It
may result in a failure.
(3) Be careful not to let foreign matter such as filings or wire chips get
inside the module while wiring. Remove all foreign matters if any get
inside.
(4) Tighten the module mounting screws within the following torque range.
Screw area
Tightening torque range
Module mounting screws (M4 screw)
0.78 to 1.18 N · m
Terminal block terminal screws (M3.5 screw)
0.59 to 0.88 N · m
Terminal block mounting screws (M3.5 screw)
0.98 to 1.37 N · m
(5) When using a DIN rail adapter, install the DIN rail considering the
precautions described below.
(a) Applicable DIN rail types (conform to JIS C 2812)
TH 35-7.5 Fe
TH 35-7.5 Al
TH 35-15 Fe
(b) Space between DIN rail mounting screws
When installing a DIN rail, tighten the screws with a space of less
than 200 mm (7.9 in.).
6. Wiring
6.1
Wiring Example with Each CC-Link Modules
The following shows the connection between the AJ65BT-68TD and
master module using twisted cables.
Master module
AJ65BT-68TD
I/O module, etc.
(Blue)
(Blue)
(Blue)
(Blue)
DA
DA
DA
(White)
(White)
(White)
(White)
DB
DB
DB
Terminal
(Yellow)
(Yellow)
(Yellow)
(Yellow)
DG
DG
DG
resistor
SLD
SLD
SLD
CC-Link
CC-Link
dedicated cable
dedicated cable
FG
FG
FG
Point
For the modules at both ends of the data link, make sure to connect the "terminal
resistor" that is attached to a master module (connect between DA and DB).
6.2
Precautions when Wiring
To obtain maximum performance from the functions of AJ65BT-68TD and
improve the system reliability, a wiring with high durability against noise is
required.
The following describes the external wiring precautions.
(1) Use separate cables for the AC and the external input signals of the
AJ65BT-68TD, in order not to be affected by the AC side surge or
conductivity.
(2) Always place a thermocouple at least 10 cm (3.94 in.) apart from the
main circuit line and AC control circuit line. Place a thermocouple
sufficiently apart from circuits with high frequency, such as high-voltage
lines and inverter load main circuits. If they are placed close to each
other, the thermocouple is influenced more easily by the noise, surge,
or conductivity.
6.3
Example of Connecting Module
The following shows the wiring example between AJ65BT-68TD and
thermocouple.
RTD
Input
Pt100
amplifier
Terminal
resistor
CH1
Input
+
Filter
amplifier
-
CH8
Input
+
Filter
amplifier
-
*1
*2
*1 Be sure to use the shielded compensating conductor for the cable.
*2 Be sure to ground.
7. External Dimensions Diagram
NP
B RATE
STATION NO.
MITSUBISHI
MELSEC
A
J65BT-68TD
X10
X1
0 1
0 1
0 1
PW
9
2
2
8
2
RUN
3
3
7
3
4
6
4
6
4
L RUN
5
5
SW
MODE
MODE OFFSET UP
RESET
SD
0
NORMAL
RD
9
0 1
SET
1-8
TEST CH.
8
2
L ERR.
7
3
9
TEST
6
5
4
GAIN DOWN
142.9(5.63)
151.9 (5.98)
Warranty
Mitsubishi will not be held liable for damage caused by factors found not to be the cause of Mitsubishi;
machine damage or lost profits caused by faults in the Mitsubishi products; damage, secondary damage,
accident compensation caused by special factors unpredictable by Mitsubishi; damages to products other
than Mitsubishi products; and to other duties.
Transformer
Transformer
2- ø4.5 installing hole
Unit: mm (in.)
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