Mitsubishi Electronics MELSEC-F Manuel D’Utilisation

3 Wiring

FX

3G

/FX

3U

/FX

3UC

 PLC User's Manual - Analog Control Edition

FX

3U

-4AD-PNK-ADP (4-channel Resistance Thermometer Data Input)

Select the Pt1000/Ni1000 (2-wire or 3-wire sensors) resistance thermometer sensor.

Wiring depends on the resistance thermometer sensor type selected. Refer to the following wiring diagrams:

*1.

24V DC service power supply of the FX

3G

/FX

3U

 Series PLC can also be used.

*2.

When using a 2-wire temperature sensor type, short-circuit the [L† -] terminal and the [I† -] terminal.
For the lead wire use a 10

Ω resistance or less per line.

*3.

Separate the cable of the platinum resistance themometer sensor from the other power cables or
areas easily affected by inductive noise (of the commercial power, etc.).

1M

Ω

ch



PNK-ADP

Class-D grounding

+5V

24+

24-

Shield wire

Terminal

block

24V DC

*1

L

+, L-, I-, ch:  represents the channel number.

3-wire
sensors
type

1M

Ω

47k

Ω

47k

Ω

+5V

1M

Ω

ch



+5V

1M

Ω

47k

Ω

47k

Ω

2-wire
sensors
type

L

-

I

-

L

+

L

-

I

-

L

+

        

*2

*3

Resistance thermometer

wiring

External power supply

wiring