Mitsubishi Electronics MELSEC-F Manuel D’Utilisation

2 Specifications

FX

3G

/FX

3U

/FX

3UC

 PLC User's Manual - Analog Control Edition

FX

3U

-4AD-PT-ADP (4-channel Platinum Resistance Thermometer Data Input)

Comm

on I
te

ms

FX

3U

-4AD

FX

3UC

-4

A

D

FX

3U

-4A
D

-A

D

P

FX

3G

-2A
D

-BD

FX

3U

-4DA

FX

3U

-4D
A

-AD
P

FX

3G

-1D
A

-BD

FX

3U

-3

A-

ADP

FX

3U

-4

A

D

-P

T

       
         

   -

A

D

P

FX

3U

-4A
D

-P

TW

     
        

      -
A

D

P

A/D conversion circuit 
driving power

24V DC +20% -15%, 50mA
(It is necessary to connect a 24V DC power supply to the terminal block.)

Interface driving power

5V DC, 15mA
(Since the internal power is supplied from the FX Series main unit, it is not
necessary to supply the power.)

°C)

°F) 

Input signal

3-wire platinum resistance thermometer sensor

Pt100 JIS C 1604-1997

Rated temperature 
range

-50

°C to +250°C

-58

°F to +482°F

Digital output

-500 to +2500

-580 to +4820

Resolution

0.1

°C

0.18°F

Total accuracy

•

±0.5% for full scale (when ambient temperature is 25°C±5°C)

•

±1.0% for full scale (when ambient temperature is in the range from 0 to 55°C)

A/D conversion 
time

• FX

3U

/FX

3UC

 Series PLC : 200

μs (The data will be updated at every scan time.)

• FX

3G

 Series PLC : 250

μs (The data will be updated at every scan time.)

→For a detailed description of data update, refer to Section 2.4.

Input 
characteristics

Insulation method

• The photocoupler is used to insulate the analog input area from the PLC.
• The DC/DC converter is used to insulate the power supply line from the analog input

area.

• Channels are not insulated from each other.

Number of I/O 
points occupied

0 points

(This number is not related to the maximum number of input/output points of the PLC.)

0

+250

°C

+2500

-50

°C

-500

-55

°C

+2

55

°C

+2550

-550

0

+482

°

F

+4820

-58

°

F

-580

-67

°F

+491

°F

-670

+4910