LabView “Modbus RTU” LS iG5A Tutorial

The LS iG5A inverter has a powerful interface and is upgraded and optimized. iG5A provides open-loop vector control, PID control, and ground fault protection through powerful built-in functions. Along with that, it also supports Modbus RTU RS484 for convenient control

Today plc247.com will guide you to use LabView software to control iG5A VFD. We need to prepare 1 USB to RS485 converter cable

Computer & LS iG5A VFD “Wiring Diagram”

LS iG5A Modbus RTU Configuration

In order for the inverter to be controlled by Modbus RTU, we need to set the parameters as shown below

plc247.com recommends that you configure as below for the most stable communication speed

• Drv = 3
• Frq = 7
• I59 = 0
• I60 = 1
• I61 = 3
• I62 = 0
• I65 = 2

LS iG5A Registers Address List

Note: Control Address = “Register Address – 1”

• Motor Control Address = 6 – 1 = 5

+ Set Word 5 = 2 >>> Forward Run
= 4 >>> Reverse Run
= 0 >>> Motor Stop

• Frequency Reference Address = 5 -1 = 4

• Output Current Address = 9 – 1 = 8

LabView Programming

+ Control Panel

+ Program

Project Video Tutorial

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Required Documentation

>>> Download LD iG5A Manual PDF (Password Extract: plc247.com)

If you need any support in using LabView to control LS iG5A, please comment below the article, plc247.com will reply as soon as I read it.

Best Regards!