Article No – AG22230001
Hello everyone!
In this Article post, I would like to guide you to use MicroLogix 1400 PLC to control PowerFlex4M AC Drive.
Step-1
Micrologix 1400 & PowerFlex 4M “Wiring Diagram”
Step-2
PowerFlex4M Communication:
In order for the VFD to be controlled via “Modbus-RTU” communication, we need to configure the following minimum parameters:
Step-3
Register Control Address
Note: MicroLogix 1400 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
Step-4
MicroLogix 1400 Modbus RTU Settings
+ Channel Settings
Step-5
PLC Logic:
References
>>> Download MicroLogix 1400 Manual PDF
>>> Download PowerFlex 4M VFD Manual PDF
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