Fx 3Uc -4Ad; Grounding - Mitsubishi Electric MELSEC-FX3S Series Manual

Table of Contents

-4AD (4-channel Analog Input)

If current input is

If voltage input is

V+, I+, ch :  represents the channel number.

Use the 2-core shielded twisted pair cable for the analog input lines, and separate the analog input

lines from the other motive power lines or inductive lines.

To use the current input, be sure to short circuit the line between the V + terminal and the I

+ terminal ( : channel number).

The SLD and "

Do not connect any lines to the "•" terminal.

Grounding should be performed as stated below.

• The grounding resistance should be 100 Ω or less.

• Independent grounding should be performed for best results.

When independent grounding is not performed, perform "shared grounding" as shown in the following

Independent grounding

Best condition

• Use the following grounding wire.

• The PLC grounding point should be close, and all grounding wires should be as short as possible.

PLC User's Manual - Analog Control Edition

" terminals are connected to each other inside.

→ For details, refer to the User's Manual - Hardware Edition of each Series.

Shared grounding

Good condition

AWG22-20 (0.3 to 0.5mm

Common grounding

3.5 Grounding

Troubleshooting