Caution: Before any VFD can be used it must first be configured correctly to work with your spindle.
Incorrect spindle configuration can lead to damage of the Spindle, the VFD or both.
This diagram is based on the default configuration shown in the VFD documentation.
Please be aware that changes made to configuration and link on the main board may make this drawing incorrect.

Please follow the step by step install procedure shown in the VFD install video
Spindle VFD examples
The manual for a Delta MS300 can be found here