The LS IG5A inverter is a compact and economical inverter, the LS – IG5 series is powerful and optimized for performance. It meets the needs of customers in every application.
Today plc247.com would like to share with you how to control the LS iG5A inverter via Modbus RTU (distance up to 1200m) with an extremely popular PLC: Mitsubishi FX3U
Wiring Diagram LS iG5A Modbus RTU FX3U
Communication Configuration LS-iG5A
In addition to the basic parameters of the motor we use, we need to set the parameters so that the inverter can communicate with Modbus, including the parameters below.
In this project I installed the following:
- Drv = 3
- Frq = 7
- I59 = 0 (Modbus Selection)
- I60 = 1 ( Slave Address)
- I61 = 3 (9600BPS)
- I62 = 0
- I65 = 2 (Even/1)
iG5A Register Modbus Address
Note: In order for the PLC to use the address from the above table correctly, we need to subtract the Hexa address by 1
+ Frequence Reference = 5 – 1 = 4 (Hex)
+ Run Command = 6 -1 = 5 (Hex)
- Set 5 (Hex) = 2 >>> Forward run
- Set 5 (Hex) = 4 >>> Reverse run
- Set 5 (Hex) = 0 >>> Stop
Data Output Reponse
+ Output Current = 9 – 1 = 8 (Hex)
+ Output Frequency = A – 1 = 9 (Hex)
+ Output Voltage = B – 1 = A (Hex)
FX3U PLC Programming
+ Channel 2 Communication Configuration
+ Read and Write Control
+ LS iG5A Frequency Setting
+ LS iG5A Run Command
+ Read Data Reponse
“FX3U Modbus LS iG5A” Detailed Instruction Video
Supporting Documents for the Project:
- FX3U Modbus Communication Manual PDF (Password Extarct: plc247.com)
- LS iG5A Manual PDF
So, plc247.com has guided you in detail how to connect FX3U to LS iG5A inverter via Modbus RTU communication standard. If you have any questions, please comment below the article.
Best Regards!
