Hello all of you!
PLC Mitsubishi FX3U is one of the most used PLC in the world. Low cost, easy programming method is the advantage of this PLC.

• Siemens S7-1200 “Servo Control” MR-J4-A
• DELTA DVP14SS2 “Servo Control” Mitsubishi MR_J4_A

Today thelivingchristmascompany.com will guide you to use FX3U to generate pulses to control Servo motor “MR-J4-A”, which is also one of the most famous Servo motors in the world.

FX3U & MR-J4-A “Wiring Diagram”

In/Out Map Table:

Input

• X0: DOG (Origin) Sensor – NO Contact
• X1: Forward Limit Sensor – NC Contact
• X2: Reverse Limit Sensor – NC Contact
• X4: Z-Phase (from Servo response)

Output

• Y0: Pulses Output
• Y4: Direction Output
• Y5: Servo ON Output

Mitsubishi MR-J4-A Driver Settings

Here are the main parameters that we need to pay attention to when installing Servo.

In order for Servo to operate in the simplest way, please configure the following:

FX3U Instruction Command

Here are 2 “Origin Return” commands and “Generate Pulse” command

Zero Return (Origin Return) Command

• S1: ORG Sensor (near-point signal (DOG) input device numbe)
• S2: Z-Phase signal input ( from Servo Motor)
• D1: Pulse output number
• D2: Rotation direction signal output

Absolute Pulse Output Command

• S1: Number of output pulses (Absolute address)
• S2: Output pulse frequency (Speed)
• D1: Pulse output number
• D2: Rotation direction signal output

PLC Programming

+ Servo ON & Origin Return Command

+ Servo Control Command ( 3 independent position control – Very easy )

Project Tutorial Video

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Software and documents for the project

• GX-Works2 for PLC Mitsubishi Programming
• MR-Configurator2 for MR-J4-A Configuraion
• FX3U Position Control Manual PDF

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