First of all, the motor of your pool pump must be 3-phase 220. Also, your pool pump needs to be grounded, not to the ground on the inverter, but to the ground you step on. This integration allows you to use external terminals to control the start, stop and speed of the inverter. We use switch signals to control the start and stop, and the speed can be controlled by 0~5V and 0~10V. See if these can work with you. If they can, you can use them.
By vevor