Steve Stallings wrote: > > > >> -----Original Message----- >> From: Jon Elson [mailto:el...@pico-systems.com] >> Sent: Monday, April 29, 2013 1:00 PM >> To: Enhanced Machine Controller (EMC) >> Subject: Re: [Emc-users] converting Monarch 10EE >> >> andy pugh wrote: >> >>> It has to make more sense to couple a 3-phase motor and >>> single-phase-input VFD directly to the spindle? >>> >>> >> The motor is an odd frame, and also has MASSIVE torque at low >> speed. So, the 10EE has no back gear. It probably works MUCH >> better at low speed than a VFD and typical 3-phase motor. >> You could make an argument for a DC drive for the motor, but >> that could be a major project, and not a good one if you aren't an >> electrical engineer. >> >> Jon >> > > The 10EE does utilize a DC motor with impressive low speed > torque, but it none-the-less does have a backgear. The gear > assembly is on the end of the motor, not in the headstock. > > OK, I've never worked on one, but have discussed the drive (especially the thyratron version) with a bunch of people. I must have mis-remembered what they said.
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