Mitsubishi FX3U “Servo Control” Yaskawa Sigma 7 Tutorial

Hello everyone!
PLC Mitsubishi FX3U and Servo Motor Yaskawa Sigma-7 are two extremely popular devices used in many machines around the world, especially machines from Japan.

• MicroLogix 1100 “Servo Control” Yaskawa Sigma 7 Tutorial

Today plc247.com will guide you to use the FX3U PLC to control Yaskawa Servo in the simplest and easiest way.

FX3U & Yaskawa Sigma 7 “Connection Diagram”

+ Use resistor R = 2K2 (Ohm) to reduce voltage “24 VDC to 5 VDC”

I/O Address

+ Input

• X0: ORG Sensor
• X1: Forward Limit Sensor
• X2: Reverse Limit Sensor

+ Output

• Y0: Pulse Output
• Y4: Direction Output
• Y5: Servo ON/OFF

Yaskawa Sigma Servo Parameters Configuration

For the Yaskawa Sigma 7 Servo, we need to set the main parameters as follows

• Pn200.0: “Reference Pulse Form”
  plc247.com uses 1 pulse control mode (Pulse + Direction)
  >>> Select “0: Sign + Pulse, positive logic”

• Pn200.3: “Filter Selection”
  >>> Select “1: Uses reference input filter for open collector signal (to 200kpps)”

• Pn20E + Pn210 + Pn212
  Three parameter is used to set the number of pulses for 1 revolution of the motor

In this Project plc247.com use “Ball screw leed = 5mm” & ” 1PLS = 10um”
>>> Pn20E = 16,777,216 / Pn210 = 500

• Pn000.1: Control Method Selection

FX3U Instructions Explained

The following are the main instructions used for the FX3U PLC to control the Servo Motor

Zero Return Instruction

• 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 Pulses Output Instruction

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

Increment Pulses Output Instruction

FX3U “Pulse Train Ouput” Example

+ Servo ON/OFF & Zero Return Control

+ Axis Jog Process

+ FX3U Possition Control

Video Tutorial

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Software and documents for the project

+ Mitsubishi GX Works2 Software Download

+ Yaskawa Servo Software Download
Yaskawa Sigma 7 Manual PDF Download

+ FX3U Positioning Manual PDF

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