I assembled the new VFD circuit boards and installed them into the VFD cabinet.
I did still have to use a slave relay board to switch the 120V contactors.
The 5 volt relay was somehow getting a surge / feedback from the high voltage switching into the 5 volt side causing the control to spaz. It did this on the prototype board too.
If I would have used a larger relay instead of this "micro" relay perhaps to put a greater distance between the points and the coil this likely wouldn't have been an issue at all.
So I just used one of the spare boards with the plug connectors and it's own power supply to keep it clean.
Then I fine tuned the program to get the PSI readings on the LCD to be approx and for the input low pressure shut down to work properly.
I also installed some misc things like some new wire restraints that I ordered from Digi-Key.
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I assembled the new VFD circuit boards and installed them into the VFD cabinet.
I did still have to use a slave relay board to switch the 120V contactors.
The 5 volt relay was somehow getting a surge / feedback from the high voltage switching into the 5 volt side causing the control to spaz. It did this on the prototype board too.
If I would have used a larger relay instead of this "micro" relay perhaps to put a greater distance between the points and the coil this likely wouldn't have been an issue at all.
So I just used one of the spare boards with the plug connectors and it's own power supply to keep it clean.
Then I fine tuned the program to get the PSI readings on the LCD to be approx and for the input low pressure shut down to work properly.
I also installed some misc things like some new wire restraints that I ordered from Digi-Key.
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