Mitsubishi Electronics MELSEC-F Manuel D’Utilisation

2 Specifications

FX

3G

/FX

3U

/FX

3UC

 PLC User's Manual - Analog Control Edition

FX

3U

-3A-ADP (2-channel analog Input, 1-channel analog output)

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

Number of input/
output points

2ch

1ch

Analog input/
output range

0V to 10V DC

(Input resistance:198.7k

Ω)

4mA to 20mA DC

(Input resistance:250

Ω)

0V to 10V DC

(External load:5k to 1M

Ω)

4mA to 20mA DC

(External load:

500

Ω or less)

Absolute 
maximum input

-0.5V,

+15V

-2mA,

+30mA

-

-

Digital input/
output

12 bits, binary

Resolution

2.5mV(10V

×1/4000)

5

μA(16mA×1/3200)

2.5mV(10V

×1/4000)

4

μA(16mA×1/4000)

Ov

er

al

l a

ccu

ra

cy

Ambient 
temperature: 
25

±5°C

±0.5%(±50mV)

for 10V full scale

±0.5%(±80μA)

for 16mA full scale

±0.5%(±50mV)

for 10V full scale

±0.5%(±80μA)

for 16mA full scale

Ambient
temperature:
0 to 55

°C

±1.0%(±100mV)

for 10V full scale

±1.0%(±160μA)

for 16mA full scale

±1.0%(±100mV)

for 10V full scale

±1.0%(±160μA)

for 16mA full scale

Reference

-

-

If the external load 
resistance (Rs) is less 
than 5k

Ω, the accuracy 

increases as shown in the 
following formula: 
(Increase: 100 mV per 
1%)

-

Time required for 
conversion

• FX

3U

/FX

3UC

 Series PLC :

80

μs for each selected input channel + 40μs for each selected output channel

(Operation synchronized with sequence program)

• FX

3G

 Series PLC :

90

μs for each selected input channel + 50μs for each selected output channel

(Operation synchronized with sequence program)

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

I/O 
characteristics

Insulation 
method

• The photocoupler is used to insulate the analog input and output area from the PLC.
• The DC/DC converter is used to insulate the power supply from the analog input and output area.
• Channels are not insulated from each other.

Number of I/O 
points occupied

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

47

×100

Rs+47

-0.9(%)

0

4000

10V

4080

Analog input

Digital output

10.2V

0

3200

20mA

3280

Analog input

Digital output

4mA

20.4mA

0

10V

4000

Digital input

Analog output

4080

0

20mA

4000

Digital input

Analog output

4mA

4080