FX2N-4AD-TC SPECIAL FUNCTION BLOCK
USER’S GUIDE
JY992D65501B
This manual contains text, diagrams and explanations which will guide the reader in the correct
installation and operation of the FX
before attempting to install or use the unit.
Further information can be found in the FX PROGRAMMING MANUAL(ΙΙ) and FX
SERIES HARDWARE MANUAL.
2N
-4AD-TC special function block and should be read and understood
0N
/FX1N/FX2N/FX
2NC
Guidelines for the Saf ety of the User and Protect ion of the FX2N-4AD-TC
special function block.
This manual should be us ed by trained and comp etent perso nnel. The de finition of such a p erson or
persons is as follows:
a) Any engineer using the product associated with this manual, should be of a compet ent nature,
trained and qualified to the local and national standards. These engineers should be fully aware of
all aspects of safety with regards to automated equipment.
b) Any commissioning or service engineer must be of a competent nature, trained and qualified to
the local and national standards.
c) All operators of the completed equipme nt should be trained to use this product in a safe and
coordinated manner in compliance to established safety practices.
The term ‘completed equipment’ refers to a third party constructed device which contains or uses
Note:
the product associated with this manual.
Notes on the Symbols Used in this Manual
At various times throughout this manual certain symbols will be used to highlight points of information
which are intended to ensure the users personal safety and protect the integrity of equipment.
1) Indicates that the identified danger
2) Indicates that the identified danger could
damage.
cause physical and property damage.
WILL
POSSIBLY
cause physical and property
• Under no circumstances will Mitsubishi Electric be liable or responsible for any consequential damage
that may arise as a result of the installation or use of this equipment.
• All examples and diagrams shown in this manual are intended only as an aid to understanding the
text, not to guarantee operation. Mitsubishi Electric will accept no responsibility for the actual use of
the product based on these illustrative examples.
• Owing to the very great variety in possible applications for this equipment, you m ust satisfy yourself as
to its suitability for your own specific application.
1. INTRODUCTION
• The FX2N-4AD-TC analog block amplifies the signal from four thermocouple sensors (Type K or J) and
converts the data into 12 bit read ing’s stored in the main unit. Both Centigrade (°C) and Fahrenheit
(°F) can be read.
Reading resolution is 0.4°C/0.72°F of Type K and 0.3°C/0.54°F of Type J.
2N
• The FX
Controllers (PLC).
• All data transfers and parameter settings are adjusted via software control of the FX
use of the TO/FROM applied instructions in the PLC.
• The FX
from either inputs or ou tputs. The FX
powered extension unit.
• Thermocouples with the following specifications can be used: Type K (JIS 1602-1981)
-4AD-TC can connected to the FX0N, FX1N, FX2N and the FX
2N
-4AD-TC occupies 8 I/O points on the PLC expansion bus. The 8 I/O points can be allocated
2N
-4AD-TC draws 40mA f rom the 5V rail of th e main unit or
Type J (JIS 1602-1981)
2NC
series Programmable
2N
-4AD-TC; by
2. EXTERNAL DIMENSIONS
Weight: Approx. 0.3 kg (0.66 lbs) Dimensions: mm (inches)
Accessories: Self adhesive labels for special function block number identification
D I N r a i l
m o u n t i n g s l o t
3 5 m m ( 1 . 3 8 )
8 7 ( 3 . 4 3 )
M o u n t i n g h o l e s
4 . 5 m m ( 0 . 1 8 ) d i a .
9 ( 0 . 3 5 )
9 0 ( 3 . 5 4 )
E x t e n s i o n c a b l e
a n d c o n n e c t o r
8 0 ( 3 . 1 5 )
C H 1
4 ( 0 . 1 6 )
2 4 +
2 4 -
S L D
L +
L -
4 ( 0 . 1 6 )
5 5 ( 2 . 1 7 )
P O W E R
2 4 V
L E D
2 4 V
A / D
A / D
L E D
T e r m i n a l s c r e w s M 3 ( 0 . 1 2 )
5 5 ( 2 . 1 7 )
2 4 +
2 4 -
S L D
C H 1
L +
L -
S L D
C H 2
L +
L -
S L D
L +
C H 4C H 3
L +
F X
L - L -
2 N
- 4 A D - T C
S L D
3. CONNECTION WITH PLC
3.1 Connection with PLC
1) Up to 4 FX2N-4AD-TC units can connect to the FX0N series PLC, up to 5 for FX1N, up to 8 for FX2N or,
up to 4 for an FX
However the following limitation exists when the undermentioned special function blocks are
connected.
2N
FX
: Main unit and powered extension units of 32 I/O points or less. Current consumption available
for the undermentioned special function blocks ≤ 190mA
2N
FX
: Main unit and powered extension units of 48 I/O points or more. Current consumption
available for the undermentioned special function blocks ≤ 300mA
2NC
FX
:Up to 4 undermentioned special function blocks can b e conn ected re gardle ss of th e system I/O.
When using an FX
0N/1N
FX
:Main unit and powered extension units. Up to 2 undermentioned special fun ction blocks can
2) Each block occupies 8 I/O points (The 8 points can be allocated from either inputs or outputs).
2N
3) FX
-4AD-TC consumes 40mA from the 5V DC bus.
The total 5V consumption of all special function blocks connected to a m ain unit or extension unit
must not exceed the 5V source capacity of the system.
4) The FX
2N
3.2 Special function block numbers
Other special units of blocks that use FROM/TO commands, such as analog input blocks, analog output
blocks and high-speed counter blocks, can be directly connected to the main unit of the PLC or to the right
side of other extension blocks or units.
Connection example
2NC
series PLC, all with powered extension units.
2NC
an FX
2NC
-CNV-IF is required.
be connected regardless of the system I/O.
-4AD-TC and main unit are connected by a cable on the right of the main unit.
X 4 X 6 X 1 0
X 0
X 2
C O M
L X 5 X 7
2 4 +N
Y 0 Y 2
Y 3
2 N
F X - 4 8 M R - E S / U L
X 0 0 0 - X 0 2 7
Y 0 0 0 - Y 0 2 7
X 1 4 X 1 6 X 2 0 X 2 2 X 2 4
X 1
X 1 3 X 1 5 X 1 7 X 21 X 2 3 X 2 5
72 4 5 61 30 2 72 0 2 2 2 3 2 4 25 2 62 1
IN
1 4 1 71 51 0 1 2 1 3
1 61 1
2N
F X
-4 8 M R - E S / U L
Y 4
Y 6
Y 5
76 2 72 0 2 2 2 3 2 4 25 2 62 1
1 6 17
Y 2 4
Y 1 4
Y 2 0
Y 2 2
Y 1 0
C O M 3
Y 1 3C O M 1
Y 7
Y 2 6
C O M 4
C O M 5
Y 2 5
Y 2 7C O M 2
Y 1 5
Y 2 1
Y 2 3
P O W E R
T . V
P R O G .E
C P U . E
2N
F X
- 4 A D
2 N
F X - 4 A D
S p e c i a l b l o c k
N o . 0
P O W E R
A /D
2 4 V
2 N
F X - 1 6 E X
X 0 3 0
- X 0 4 7
P O W E R
2N
F X - 4 D A
D / A
2 4 V
2 N
F X - 4 D A
S p e c i a l b l o c k
N o . 1
L
N
Y 0
C O M 1
Y 1
F X - 3 2 E R
X 0 5 0 - X 0 6 7
Y 0 3 0 - Y 0 4 7
4. WIRING
4.1 Wiring
Thermocouple
Thermocouple
Grounding
(100
1
shielded
1
shielded
24VDC±10% 50mA
4
or less)
:
Extension cable
*3: Connect the ground terminals of the FX
unit.
*4: The 24V DC built-in supply of the PLC may be used as the power supply.
SLD
CH1
L+
L-
CH4
L+
L-
SLD
2
24+
3
24-
PLC
FX2N-4AD-TC
Analog Input Block
Temperature
compensation
circuit
DC/DC
converter
CH1
:
3K
CH4
3K
:
+15V
AG
*1: The compensating cables that can be used for
connecting with the thermocouple are the following.
Type K: KX-G, KX-GS, KX-H, KX-HS,WX-G,WX-H,VX-G
Type J: JX-G, JX-H
For every 10Ω of line resistance, the compensat ing
cable will indicat e a tempera ture 0.12°C higher than
actual.
Check the line resistance before using. Long
compensating cables are more pr one to noise
-15V
interference, therefore a short (less than 100m)
compensating cable is recommended.
Unused channe ls should have a wire link co nnected
between the + and - terminals to prevent an errors being
detected on that channel.
*2: If there is excessive electrical noise, connect the SLD
terminal to the ground terminal on the unit.
2N
-4AD-TC unit and the main unit. Use grounding on the main
Y 2
Y 3
2 N
X 0
C O M X 4
2 4+
Y 4
C O M 2
X 1
Y 5
X 2
X 3
Y 6
Y 7 C O M 3
X 6 X 1 0 X 1 2 X 1 4 X 16
X 5
X 1 1 X 1 3 X 1 5 X 1 7
X 7
IN
O U T
Y 1 2
Y 1 0
Y 1 3
Y 1 1
1 4 1 71 510 1 2 1 3
Y 1 4
C O M 4
72 4 5 61 30
1 61 1
72 4 5 61 30
1 61 1 1 51 4 1 71 0 1 2 1 3
Y 1 6
Y 1 5
Y 1 7
P O W E R
F X - 4 A D - T C
2 N
S p e c i a l b l o c k
N o . 2
P O W E R
2 4 V
A / D
4.2 Using crimp terminations
l e s s t h a n
6 . 2 m m ( 0 . 2 4 )
l e s s t h a n
6 . 2 m m ( 0 . 2 4 )
U s e M 3 ( 0 . 1 2 )
• Use crimp ter minals as indicated on the left.
• Secure the ter minal using a tightening torque of between 5 and 8
⋅
cm.
kg
• Wire only to the module terminals discussed in this manual. Leave all
others vacant.
5. SPECIFICATIONS
5.1 Environmental specification
Item Specification
Environmental specifications Same as those for the main unit
Dielectric withstand voltage 500V AC, 1min (bet ween all terminals and ground)
5.2 Power supply specification
Item Specification
Analog circuits 24V DC ± 10%, 60mA
Digital circuits 5V DC, 40mA (internal power supply from the main unit)
5.3 Performance specification Analog Inputs
Item
Input signal
Rated temperature
range
Centigrade (
Both °C and °F are available by reading the appropriate buffer memory (BFM).
Thermocouple: Ty pe K or J (either can be used for each channel), 4 channels, JIS
1602-1981
Type K -100°C to +1,200°C Type K -148°F to +2,192°F
Type J -100°C to +600°C Type J -148°F to +1,112°F
°°°°
C) Fahrenheit (
12 bit conversion stored in 16 bit 2’s complement form
Digital output
Type K -1,000 to 12,000 Type K -148°F to +2,192°F
Type J -1,000 to 6,000 Type J - 148°F to +1,112°F
Resolution
Overall accuracy
Calibration point
Type K 0.4°C Type K 0.72°F
Type J 0.3°C Type J 0.54°F
± (0.5% full scale +1°C)
Freezing point of pure water 0°C / 32°F
Conversion speed (240ms ± 2%) × 4 channels (unused channels are not converted)
°°°°
F)
Item Centigrade (
Conversion Characteristics
Readings given at calibration
reference point 0°C/32°F (0/320)
respectively.
(subject to the overall accuracy)
(Type K)
+12,000
(Type J)
+6,000
-100°C
-1,000
°°°°
C) Fahrenheit (
(Type K)
+21,920
(Type J)
+11,120
+600°C
+1,200°C
(Type K)(Type J)
-148°F
-1,480
+1,112°F
°°°°
F)
+2,192°F
(Type K)(Type J)
Miscellaneous
Item Specification
Photo-coupler isolation between analog and digital circuits.
Isolation
DC/DC converter isolation of power from main unit.
No isolation between analog channels.
Number of occupied I/O points
The block occupies 8 I/O points
(can be either inputs or outputs)
Note: Earth-tipped thermocouples are not suitable for use with this unit.
5.4 Installation location
This unit measures t emperature according to the tempe rature difference between the temperature
measurement part (them ocouple) a nd the ter minal block. If this un it is installed at a place wh ere the
temperature of the terminal block varies rapidly, a measuring error may occur. For this reason, the unit
should be installed at a place free from excessive temperature variation.
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