MasterBlaster
Lifetime Supporting Member
A friend has a 4 HP lathe he trying to soft-start. It’s a 240-volt, 3-phase motor so he installed a rotary phase converter in order to derive his 3-phase source. Then he had a VFD installed in attempt to soften the start. The VFD did not work and it was removed. That’s where I inherit the issue.
My memory is that VFD’s do not play well with rotary converters.
Is using an over-sized VFD a better solution? If so, what size drive is appropriate for a 4 horse motor?
Thanks!
(I hope I’ve not duplicated an earlier attempt to post this, but I don’t see my previous post.)
My memory is that VFD’s do not play well with rotary converters.
Is using an over-sized VFD a better solution? If so, what size drive is appropriate for a 4 horse motor?
Thanks!
(I hope I’ve not duplicated an earlier attempt to post this, but I don’t see my previous post.)
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