Mastodawn

Big Edit: Solved! Thanks to everyone who helped me with critical information about this very little thing that doesn't affect any of you in a direct way. I am very grateful.

Original post-------------------

Question for #electronics people, #engineer people, etc.: What are these used for?
These are labeled (FB marketplace pic) as Woods XFC-2001 0B micro-inverters. What kinds of applications do they have?

Edit: The internet search engines are eager to tell me what the brand and model of these are (which I already know), but I'm coming up short trying to find what they're used for.

Edit 2: Welp, since somebody has 4 of them for sale, $10 each, half an hour from my house, I guess I'll own four of them if all goes well :)

Edit 3: Guess who's got two thumbs (currently) and four micro-inverter VFDs! This guy!

#question #whatfor

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Arduinadas Mar 3

@guyjantic As others have already said, they are variable frequency drives (VFD).

An VDF is an electronic device used to control the speed and torque of an electric motor by varying the frequency and voltage of its power supply.

The control panel is quite similar to those of another manufacturer: Berges. At the factory where I work we have several of that brand, to control the motors of Heesemann grinding machines.

https://search.pcgaldo.com/search?q=berges%20inverter&language=all&time_range=&safesearch=0&categories=images

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Arduinadas

@guyjantic I think this is the manual:

https://s3.amazonaws.com/Icarus/DOCUMENTS/TBWoods_Manuals_1484.pdf

The E-trAC XFC Series VFD offers:

Speed via analog signal (0-10V, 4-20mA) or keypad.
Up to 8 preset speeds.
Adjustable acceleration/deceleration ramps.
Configurable V/Hz patterns and torque boost/limits.

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Arduinadas Mar 3

@guyjantic It seems that at that time both brands made a similar model, based on the technology of the Finnish Vacon, today belonging to Danfoss.