The Powerflex 525 inverter is a series of Rockwell’s 520 inverter series. The Powerflex 520 inverter series was born to meet Rockwell’s Logix platform in common applications requiring inverters, it has built-in Ethernet/IP and RS485 ports which is convenient for controlling and monitoring the inverter by communication.
So today plc247.com will write a tutorial on how to use HMI Delta DOP-107EV (other models with RS485 ports are similar) to control Allen-Bradley PowerFlex525 through “Modbus RTU” RS485
Delta DOP-107EV & PowerFlex525 “Wiring Diagram”
Note: Use twisted pair cable and Terminal resistor 120Ω if Communication distance is long
PowerFlex 525 Modbus Parameters Setting
In order for the Allen-Bradley PowerFlex 525 to be controlled and monitored by Modbus-RTU, we need to set the following communication parameters
PowerFlex525 Inverter Modbus Registers Address
Registers for Control
>>> Motor Control Address = 2000 (Hexa)
- Set Word 2000 = 18 (dec) >>> Run Forward
- Set Word 2000 = 34 (dec) >>> Run Reverse
- Set Word 2000 = 1 (dec) >>> Stop
= 8 (dec) >>> VFD Fault Reset
>>> Frequency Setting Address = 2001 (Hexa)
Registers for Monitoring
>>> VFD Status Address = 2100 (Hexa)
+ Output Frequency Address = 2103 (Hexa)
+ Output Current Address = 2104 (Hexa)
+ Output Voltage Address = 2106 (Hexa)
HMI Delta Modbus-RTU Configuration
We need to set the communication parameters of the HMI DOP-107EV to be the same as those installed for the PowerFlex 525 Inverter before they can be connected and control
HMI Programming
+ Control Panel Design
+ VFD Ready
+ Frequency Reference
+ Forward Run
+ Reverse Run
+ Stop Command
+ VFD Reset
+ Frequency Monitoring
+ Current Monitoring
+ Voltage Monitoring
Detailed Instruction Video
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Software and Documents
+ Delta HMI Software Free Download
+ Allen-Bradley PowerFlex 525 Manual PDF Download
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