Hello friends!
In previous posts, plc247.com showed you how to use Allen-Bradley MicroLogix 1400 PLC to control some Controller & Inverter through Modbus-RTU (RS485) Communication Standard.
Today I continue to write a post to share with you how to use MicroLogix 1400 PLC to connect to DELTA MS300 inverter control. This is a new type of Delta inverter and is widely used in many types of machines.
MicroLogix 1400 & Delta MS300 “Wiring Diagram”
+ The Modbus-RTU RS485 communication port of MicroLogix 1400 is a Mini DIN port (8Pin), you can buy an additional Module 1763-NC01 for easy connection.
Delta MS300 “Modbus RTU” Parameters Setting
To be able to control the inverter by “Modbus RTU”, we need to set the communication parameters for the RS485 port as follows:
+ P00.20 = 1 (Frequency Control via RS485)
+ P00.21 = 2 (Motor Control via RS485)
+ P09.00 = 1 (Address Slave = 1)
+ P09.01 = 9.6 (Baudrate = 9600bps)
+ P09.02 = 0
+ P09.03 = 1.0 (Time Com. Err)
+ P09.04 = 14 (Modbus-RTU 8/E/1)
Delta MS300 Registers for Control
Note: MicroLogix 1400 Address = “VFD Address (Dec) + 1“
>>> Motor Control Address = 2000 (hexa) + 1 = 8192 (dec) + 1 = 8193
- Set Word 8193 = 18 >>> Forward Run
= 34 >>> Reverse Run
= 1 >>> Stop
>>> Frequency Setting Address = 2001 (hexa) + 1 = 8193 (dec) + 1 = 8194
Delta MS300 Registers for Monitoring
- Frequency Command Address = 2102 (hex) + 1 = 8450 (dec) + 1 = 8451
- Output Frequency Address = 8452
- Output Current Address = 8453
- DC-BUS Voltage Address = 8454
- Output Voltage Address = 8455
MicroLogix “1400 Modbus RTU” Configuration
We need to set the communication parameters of PLC same as LS iG5A VFD
MicroLogix 1400 Programming
+ Read/Write Distribution
+ Start/Stop Control Command
+ VFD Frequency Setting
+ VFD Data Output Monitoring
Project Video Tutorial
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References
>>> Download MicroLogix 1400 Manual PDF
>>> Download Delta MS300 Manual PDF
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Best Regards!
