06-19-2017, 01:17 PM
Was your re-winder aware that you intend to drive it from a VFD?
The reason I ask is that apparently 'inverter spec' motors have a higher class of insulation to cope with the fast rising edges of the drive signal. Also don't overlook cooling if it relies on a fan - running at the slower speeds the fans don't shift enough air in certain circumstances.
(Sorry to be a harbinger of doom, I'm sure it'll be fine :) )
The reason I ask is that apparently 'inverter spec' motors have a higher class of insulation to cope with the fast rising edges of the drive signal. Also don't overlook cooling if it relies on a fan - running at the slower speeds the fans don't shift enough air in certain circumstances.
(Sorry to be a harbinger of doom, I'm sure it'll be fine :) )
Andrew Mawson, proud to be a member of MetalworkingFun Forum since Oct 2013.