Controlling multiple inverters in one plant, or controlling
and remote inverter parameter monitoring is a problem we often encounter. Therefore, the inverters are usually equipped with RS485 port to support Modbus RTU communication (supports 1 control network up to 32 slaves and 1200m distance).
Today plc247.com will guide you to use the Siemens S7-1200 PLC to control the LS iG5A inverter via Modbus-RTU communication.
Connection Diagram
Communication Configuration LS iG5A VFD
Communication parameters we need to set
The parameters I set in the project:
+ Drv = 3
+ Frq = 7
+ I59 = 0
+ I60 = 1
+ I61 = 3
+ I62 = 0
+ I65 = 2
Register Address Table
S7-1200 Comm. Configuration ( CB1241 Module)
I recommend you choose the transmission type: 9600bps/8bits/Even
Modbus_Block_Creat
PLC Programming
+ Communication Distribution
+ Communication Load Command
+ Frequence Set Command
+ Motor Control Run Command
+ Read Output Data Response
Video Connecting S7-1200 and LS iG5A
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Reference
- LS iG5A VFD Manual PDF Download (Password: plc247.com)
- Step7 Professional for S7-1200 PLC
So today I have guided you on how to connect S7-1200 and LS iG5A VFD in detail, if you have any questions, please comment below the article, I will answer as soon as I read it.
Best Regards!
