Hello everyone!
In the previous post, plc247.com showed you how to use MicroLogix 1100 PLC to control Mitsubishi FR-E700 Series inverters via RS485 “Modbus-RTU” standard.
Today I would like to continue to guide you to use MicroLogix 1100 PLC to control PowerFlex525 Inverter
Micrologix 1100 & PowerFlex 525 “Wiring Diagram”
PowerFlex525 Communication Configurator
In order for the inverter to be controlled via “Modbus-RTU” communication, we need to configure the following minimum parameters:
Register Control Address
Note: MicroLogix 1100 Address = “VFD Address (Dec) + 1“
>>> Motor Control Address = 8192 (Dec) + 1 = 8193
+ Set Word 8193 = 8 : Reset VFD
= 18 : Forward Run
= 34 : Reverse Run
= 1 : Stop
>>> Motor Frequency Reference Address = 8193 (Dec) + 1 = 8194
Register Monitoring Address
We will read the 5 main parameters of the inverter with a single command starting with the following address:
>>> Frequency Command Address = 8450 (Dec) + 1 = 8451
MicroLogix 1100 Modbus RTU Settings
+ Channel Settings
MicroLogix 1100 Programming
+ Automatic Read/Write Distribution
+ Control Run Command
+ Frequency Setting Command
+ Data Response Monitoring
Video Tutorial
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References
>>> Download MicroLogix 1100 Manual PDF
>>> Download PowerFlex 525 VFD Manual PDF
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