FX
2N
-4AD-PT SPECIAL FUNCTION BLOCK
USER’S GUIDE
JY992D65601E
This manual contains text, diagrams and explanations which will guide the reader in the correct installation
and operation of the FX
2N
-4AD-PT special function block and should be read and understood before
attempting to install or use the unit.
Further information can be found in the FX PROGRAMMING MANUAL(
ΙΙ
) and FX
0N
/FX
1N
/FX
2N
/FX
2NC
/
FX
3U
/FX
3UC
SERIES HARDWARE MANUAL.
Guidelines for the Safety of the User and Protection of the FX
2N
-4AD-PT
special function block.
This manual should be used by trained and competent personnel. The definition of such a person or
persons is as follows:
a) Any engineer using the product associated with this manual, should be of a competent 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 equipment should be trained to use this product in a safe and
coordinated manner in compliance to established safety practices.
Note:
The term ‘completed equipment’ refers to a third party constructed device which contains or uses
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
WILL
cause physical and property damage.
2) Indicates that the identified danger could
POSSIBLY
cause physical and property
damage.
•
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 must satisfy yourself as
to its suitability for your specific application.
1. INTRODUCTION
•
The FX
2N
-4AD-PT analog block amplifies the input from four platinum temperature sensors (Pt 100, 3
wire, 100
Ω
) and converts the data into 12 bit reading’s stored in the main unit. Both Centigrade (
°
C)
and Fahrenheit (
°
F) can be read. Reading resolution is 0.2
°
C to 0.3
°
C / 0.36
°
F to 0.54
°
F.
•
The FX
2N
-4AD-PT can connected to the FX
0N
/FX
1N
/FX
2N
/FX
2NC
/FX
3U
/FX
3UC
series Programmable
Controllers (PLC).
•
All data transfers and parameter setups are adjusted via software control of the FX
2N
-4AD-PT; by use
of the TO/FROM applied instructions in the PLC.
•
The FX
2N
-4AD-PT occupies 8 I/O points on the PLC expansion bus. The 8 I/O points can be allocated
from either inputs or outputs. The FX
2N
-4AD-PT draws 30mA from the 5V rail of the main unit or
powered extension unit.
2. EXTERNAL DIMENSIONS
3. CONNECTION WITH PLC
3.1 Connection with PLC
The FX
2N
-4AD-PT unit can be connected to the PLCs as follows. Restrictions apply to the maximum
number of connectable units, depending on the DC24V/DC5V Power Supply capacities and the Main Unit/
Special Function Unit types. For details, refer to the respective PLC manual.
FX
2N
/FX
3U
: The maximum connectable units is 8.
FX
3UC
*1
: The maximum connectable units is 8.
To connect the FX
2N
-4AD with the FX
3UC
main unit, FX
2NC
-CNV-IF or FX
3UC
-1PS-5V is
required.
FX
2NC
: The maximum connectable units is 4.
To connect the FX
2N
-4AD-PT with the FX
2NC
main unit, FX
2NC
-CNV-IF is required.
FX
1N
: The maximum connectable units is 8.
FX
0N
: The maximum connectable units is 4.
*1 Up to 7 units can be connected to an FX
3UC
-32MT-LT PLC.
3.2 Special function block numbers
Other special units of blocks that use FROM/TO instructions, 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.
4. WIRING
4.1 Wiring
c
The cable of the Pt 100 sensor or a twisted shielded
cable should be used for the analog input cable. This
analog input cable should be wired separately from
power lines or any other lines which may induce noise.
The three wire method improves the accuracy of the
sensors by compensating voltage drops.
d
If there is electrical noise, connect the FG (frame
ground) terminal with the ground terminal. (In CH1,
there is no FG terminal. Use FG terminal of other
channels.)
e
Connect the ground terminal on the FX
2N
-4AD-PT unit
with the grounded terminal on the main unit. Use
grounding on the main unit, if grounding is possible.
f
Either an external or the 24V built-in supply in the PLC
may be used.
For additional data regarding EMC considerations
please see section 10.
POWER
24V
A/D
CH4
CH3
CH1
24+
24-
L+
L+
FX
2N
-4AD-PT
L-
L-
L+
L-
I-
CH1
24+
24-
L-
CH2
L-
L+
L+
4 (0.16)
4 (0.16)
55 (2.17)
80 (3.15)
90 (3.54)
55 (2.17)
87 (3.43)
9 (0.35)
Terminal screws M3 (0.12)
24V
LED
A/D
LED
DIN rail
mounting slot
35 (1.38)
Mounting holes
4.5 (0.18) dia.
Extension cable
and connector
FG
FG
I-
FG
I-
I-
I-
Weight: Approx. 0.3 kg (0.66 lbs)
Dimensions: mm (inches)
FX -16EX
X000-X027
Y000-Y027
X030
-X047
2N
FX -48MR-ES/UL
2N
FX -4AD
2N
No.2
2N
FX -4AD-PT
X050-X067
Y030-Y047
2N
FX -32ER
2N
FX -4DA
POWER
A/D
24V
FX -4AD
2N
POWER
D/A
24V
FX -4DA
2N
No.1
No.0
POWER
24V
A/D
1
IN 0
7
2
3
4
5
6
POWER
1
IN 0
7
2
3
4
5
6
Special block
Special block
Special block
X0
X5
7
2
4
5
6
1
3
0
16
11
15
14
17
10
12 13
14
17
15
10
12 13
7
2
4
5
6
1
3
0
16
11
OUT
IN
L
X11
X13
X15
X17
X6
X10
X12
X14
X16
24+
N
COM
X4
X7
COM4
COM2
Y4
Y5
Y6
Y7
COM3
Y10
Y11
Y12
Y13
COM1
Y0
Y1
Y2
Y3
Y14
Y15
Y16
Y17
X3
X2
X1
POWER
7
6
27
20
22 23 24 25 26
21
16 17
14
17
15
10
12 13
7
2
4 5 6
1
3
0
27
20
22 23 24 25 26
21
16
11
IN
L
X5
X7
X13
X15
X17
X21
X23
X25
X4
X6
X10
X14
X16
X20
X22
X24
24+
N
COM
X0
X1
X2
COM4
Y24
Y25
COM5
Y27
COM2
Y4
Y5
Y6
Y7
COM3
Y10
Y13
COM1
Y0
Y2
Y3
Y14
Y15
Y20
Y21
Y22
Y23
Y26
POWER
T.V
CPU.E
PROG.E
FX
2N
-48MR-ES/UL
FX
2N
-16EX
Pt100
1
shielded CH1
L+
L-
I-
FG
Pt100
CH4
5V
4.7K
4.7K
100K
100K
AG
L+
24+
24-
DC/DC
converter
AG
AG
5V
+15V
-15V
PLC
Extension cable
D grounding
(100
:
or less)
3
4
DC24V±10% 50mA 2
FX
2N
-4AD-PT
L-
I-
FG
1
shielded
4.2 Using crimp terminations
• Use crimp terminals as indicated on the left.
• Secure the terminal using a tightening torque of between 0.5 and 0.8
N
⋅
m.
• Wire only to the module terminals discussed in this manual. Leave all
others vacant.
5. INSTALLATION NOTES AND USAGE
5.1 General specification
5.2 Power supply specification
5.3 Performance specification
Analog Inputs
Analog Inputs continued...
Miscellaneous
Item
Specification
General specifications
Same as those for the main unit
Dielectric withstand voltage
500V AC, 1min (between all terminals and ground)
Item
Specification
Analog circuits
24V DC ± 10%, 50mA
Digital circuits
5V DC, 30mA (internal power supply from the main unit)
Item
Centigrade
Fahrenheit
Both
°
C and
°
F are available by reading the appropriate buffer memory (BFM).
Analog input signal
Platinum Temperature Pt 100 sensors (100
Ω
), 3-wire, 4-channel (CH1, CH2,
CH3, CH4), (DIN 43760, JIS C 1604-1997, JIS C 1604-1981)
Current to sensor
1 mA. sensor: 100
Ω
Pt 100
Compensated range
-100
°
C to +600
°
C -148
°
F to +1112
°
F
Digital output
-1000 to 6000
-1480 to +11120
12-bit conversion 11 data bits +1 sign bit 16-bit binary with sign
Minimum resolvable
temp.
0.2
°
C to 0.3
°
C 0.36
°
F to 0.54
°
F
Overall accuracy
± 1% full scale (compensated range)
See section 7.0 for special EMC considerations
Conversion speed
60ms (15 ms for 4 channels)
Conversion
Characteristics
Item
Specification
Isolation
Photo-coupler isolation between analog and digital circuits.
DC/DC converter isolation of power from the 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)
less than
6.2mm (0.24)
Use M3 (0.12)
less than
6.2mm (0.24)
+6,000
-100°C
-1,000
+600°C
Temp. input°C
Digital
output
+11,120
-148°F
-1,480
+1,112°F
Temp. input°F
Digital
output
