VFD-1 Variable Frequency Drive is specifically designed to control Inverters including TECO E510, DELTA ME300, ABB ACS355 (with an FMBA-01 module) etc. with the Hydro-X Pro controller for the purpose of controlling and adjusting the speed of industrial fans in your application.
There is no need to provide power supply for the VFD-1 unit. It can be connected to the Hydro-X Pro with a simple RJ12 phone cable.