Detla’s VFD-M inverter has been discontinued for a long time and has been replaced by new inverter lines such as MS300, but this is a series of inverters that are used a lot in machinery. And sometimes we need to work with them.
Today plc247.com will guide you to use MicroLogix 1400 PLC to control FUJI Frenic VFD through Modbus-RTU (RS485) Communication.
MicroLogix 1400 & Delta VFD-M “Wiring Diagram”
Use Module 1763-NC01 for easy wiring or you can also connect it directly to the RS485 port of MicroLogix 1400 PLC (Mini DIN – 8Pin).
Delta VFD-M Parameters Configuration
Delta VFD-M Registers Address for Control
Note: MicroLogix 1400 Address = “VFD Address (Dec) + 1“
>>> Address for Control Motor = 2000(hex) + 1
= 8192(dec) + 1 = 8193 (dec)
+ Run Forward > Set Word 8193 = 0000 0000 0001 0010 (binary) =12(hex) = 18 (dec)
+ Run Reserved > Set Word 8193 = 0000 0000 0010 0010 (binary) =22 (hex)= 34(dec)
+ Stop > Set Word 8193 = 0000.0000.0000.0001 = 1 (dec)
>>> Address for Setting Frequency = 2001(hex) + 1
= 8193(dec) + 1 = 8194 (dec)
Delta VFD-M Registers Address for Monitoring
- plc247.com read 5 output registers including: Frequency Command, Output Frequency, Output Current, DC-BUS Voltage, Output Voltage.
>>> Address to Start Reading = 2102(hex) + 1
= 8450(dec) + 1 = 8451 (dec)
MicroLogix 1400 Modbus RTU Setting
+ Channel 0 (RS485 Port) Configuration
MicroLogix-1400 PLC Programming
+ Read/Write Auto Communication
+ VFD Control Command
+ Frequency Setting Command
+ Data Output Monitoring
Project Video Tutorial
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If in the process of using MicroLogix 1400 PLC to connect to Delta VFD-M, you have difficulties or have any questions, please comment below the article, plc247.com will answer you when I read it.