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Mitsubishi FR-E700 Series inverter is one of the most used types in the world because of its compact size, reasonable price, full support for basic control methods such as: Keypad control , External Control, Analogue Control, RS485…
Today plc247.com will guide you to use PLC Inovance H3U-3232MT to control Mitsubishi FR-E720 inverter through Modbus-RTU communication. Both devices have a built-in RS485 port.
Inovance H3U & Mitsubishi FR-E720 “Wiring Diagram”
+ Below is the RS485 communication connection diagram between PLC Inovance H3U-3232MT and Mitsubishi FR-E720 VFD
Mitsubishi FR-E720 Modbus Parameters Setting
To be able to control the Mitsubishi FR-E700 Series inverter by Modbus RTU, we need to install the following communication parameters for the inverter:
- Pr117: 1 (Slave Address)
- Pr118: 3 (Baudrate 9600)
- Pr119: 0 (8bit, stop bit = 1)
- Pr120: 2 (Even)
- Pr121: 9999
- Pr122: 9999
- Pr123: 9999
- Pr124: 1
- Pr340: 1
- Pr549: 1
- Pr79: 2 (Last Setting)
Mitsubishi FR-E700 Modbus Registers Address
Note: VFD Address = Starting register address (decimal) – 40001
>>> VFD Control Address = 40009 – 40001 = 8 (dec) = 8 (hex)
+ Set Word 8(hex) = 0000 0000 0000 0010 = 2 >>> Forward Run
+ Set Word 8(hex) = 0000 0000 0000 0100 = 4 >>> Reverse Run
+ Set Word 8(hex) = 0000 0000 0000 0000 = 0 >>> Stop
>>> Frequency Setting Address =40014 – 40001 = 13 (dec) = D (hex)
- Output Frequency Address = 40201 – 40001 = 200 (dec) = C8 (hex)
- Output Current Address = C9 (hex)
- Output Voltage Address =CA (hex)
PLC Inovance Modbus-RTU Setting
How did you install the communication parameters for the Mitsubishi FR-E720, you must also install the same for the PLC Inovance
PLC Programming Example
+ Create Modbus Configuration
+ Modbus Address Configuration and Programming
Video Tutorial
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References
>>> Download PLC Inovance Programming Software
>>> Mitsubishi FR-E720 Manual PDF Download
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