On Thu, 4 Oct 2018 at 13:32, Bengt Sjölund <beng...@tecno.se> wrote:

> I have several AC servo motors but no drivers, I would like to test
> these to verify that they all work and are OK

What do you want to test?

The VFD probably won't do any harm but won't tell you much about the
encoder/resolver.

If you can get your hands on an STMBL drive then you can test properly
as it accepts most of the common feedback types (quadrature encoder,
resolver and a range of serial data formats)

The VFD test won't tell you very much more than you can determine by
shorting the power wires in pairs in all combinations and turning the
shaft by hand.
(tells you if the magnets work and if the coils are open-circuit)

-- 
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses, daredevils and
lunatics."
— George Fitch, Atlanta Constitution Newspaper, 1916


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