Connecting a Huanyang VFD

Use the following steps to connect the Huanyang VFD to the Buildbotics Controller:

  1. Disconnect power from the VFD controller, the spindle, and the Buildbotics Controller
  2. Remove the front cover from the Huanyang VFD.
  3. Connect the plus side of the RS485 pair to pin 13 on the DB25 breakout board that connects to the Buildbotics Controller.
  4. Connect the minus side of the RS485 pair to pin 14 on the DB25 breakout board that connects to the Buildbotics Controller.
  5. Shielded twisted pair cable is recommended for the connection from the Buildbotics Controller. If you use shielded twisted pair cable, connect the shield to ground on the VFD and to a GND pin on the 25-pin breakout board.
  6. Connect the DB25 breakout board to the back of the Buildbotics Controller
  7. Reconnect power.
  8. Replace the cover on the VFD.
  9. Apply power to the VFD.

Using the procedure in the Huanyang manual, set the following register values:

  1. Set PD000 to 0 - unlock parameters
  2. Set PD001 to 2 - Command source is RS485
  3. Set PD002 to 2 - Speed source is RS485
  4. Set PD163 to 1 - Communications address 1
  5. Set PD164 to 1 - 9600 b/s
  6. Set PD165 to 3 - 8 Bit No Parity - RTU
  7. Set PD000 to 1 - lock parameters

Finally, configure the Buildbotics Controller for spindle control as described in the Buildbotics Controller Manual.

by Doug Coffland