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    Control board used to control Variable Frequency Drives, VFDs.
    Published:
This is a project to make a simple control system for Variable Frequency Drives(VFD), the final project will be housed in a box about the same size of a TV remote, and will have a small communication cable coming out to connect to the inputs on a VFD. The first controller will have a set of 6 switched, and a relay status bank consisting of 6 LED's there will also be a switch for the relay bank to allow for different drive power configuration. Along with the switched and the bank, there will be a potentiometer for controlling the speed of the motor. The final control will have a LCD display which will read the motor speed and current.
Schematic REV 3.2
Test of relay bank, using a 2 postion switch and a common 24VDC supply.
Test of relay bank, using a 2 postion switch and a common 24VDC supply.
Here is a JOG test, the first LED in the bank is running, the second is above 90RPM, and the third is enabled
Running a motor at 900RPM and 30Hz, half speed