Last and the most elegant way would be to control the inverter using MODBUS communication. Stable spindle speed control can be difficult to achieve due to analog voltage signals and EM interference. In practice this means that external board will be needed for inverter input control.Įxample: User connects relay board with cnc controller and configure cnc software in such way, that controller output pins will respond to gcode commands and activate appropriate relays. Second would be that inverter control terminal inputs will control the motor behavior. User can manually operate inverter from front panel, and press the buttons and rotate the knobs at the right moment – not really useful. Meaning, whenever commands such as M3, M4, M5 appear in the gcode program, spindle motor of CNC machine should respond with appropriate action.Įxample: M3 S10000 should turn ON the spindle and ramp up spindle to 10000 rpm, M4 should rotate spindle motor in reverse direction and M5 gcode command should stop the spindle. Such CNC application requirement would be achieving spindle control trough gcode program commands. Through parameter configuration, user can configure inverter behavior in such way, so that it complies with application needs and spindle motor hardware requirements that it is used with. They can be used for different applications, but in a CNC machine context they are normally used to drive the spindle motor of CNC machine. HuanYang inverters are very common and popular among hobby CNC machinists. Serial communication(MODBUS relay board) with PlanetCNC TNG – Part 4 Serial communication(MODBUS relay board) with PlanetCNC TNG – Part 3Įstablishing communication with Modbus device:(advanced) Serial communication(MODBUS relay board) with PlanetCNC TNG – Part 2Įstablishing communication with Modbus device(basic): Serial communication(MODBUS relay board) with PlanetCNC TNG – Part 1ĭescription of serial communication functions(data send/read): These tutorials explain the tools provided by PlanetCNC and how to use them in order to communicate with external equipment using serial communication(MODBUS).ĭescription of serial communication functions(data preparation): This tutorial will describe the necessary steps for successful control of your HuanYang VFD(model: HY01D523B) using PlanetCNC TNG software.īefore we start, I would really recommend reading tutorials related to serial communication, MODBUS and PlanetCNC TNG software.
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