+- Woodnet Forums (https://forums.woodnet.net)
+-- Thread: Two electrical questions (/showthread.php?tid=7352489)
RE: Two electrical questions - ®smpr_fi_mac® - 01-21-2020
Thanks, folks. That helps.
RE: Two electrical questions - TDKPE - 01-21-2020
(01-21-2020, 10:21 AM)®smpr_fi_mac® Wrote: What I'm looking for is an adapter that will convert 110V AC to 90V DC.
I don't know much about DC motors, but that motor requires both armature power at 90VDC, and field power at 50/100VDC. Sounds like a real DC motor controller is required, but that's about all I know. I've managed to stay away from DC for pretty much ever, other than once specifying an 8-motor DC drive system for a big portal crane many many moons ago, in the early days of VFD's, as I didn't have enough confidence in them way back then but big DC systems were super common. But I digress.
RE: Two electrical questions - ®smpr_fi_mac® - 01-21-2020
Hmmm.
So maybe a pair of adapters? One for 90V and another for either 50V or 100V? If that's so, I'd lean to 100V to lower amperage requirements.
RE: Two electrical questions - TDKPE - 01-21-2020
Not what you asked, which I don't think I can answer reliably anyway, but that sounds like a lot of work for a 1/4 hp, 56C frame, 1800 rpm motor, which is super common in a single-phase flavor. Not even a "Z" on the end, so the shaft is standard. Even more common without the C-face, but you may need it. I don't know.
Just sayin'.
RE: Two electrical questions - ®smpr_fi_mac® - 01-21-2020
I do need the C designation but am not wedded to *this* motor. I may just hunt for a proper AC motor.
RE: Two electrical questions - Roly - 01-21-2020
You can look up all the specs as this is a Baldor motor #CD3425. I don't know what you are connecting it to but it has a 5/8" dia shaft, very hefty for a 1/4 hp.
As others have said trying to convert the AC to DC and probably have a limited speed control for it will all cost more than a 1/4 hp split phase motor. I think they said it is used in printing and textiles industries. A very expensive motor. Roly
RE: Two electrical questions - TDKPE - 01-21-2020
(01-21-2020, 04:36 PM)Roly Wrote: As others have said trying to convert the AC to DC and probably have a limited speed control for it will all cost more than a 1/4 hp split phase motor. I think they said it is used in printing and textiles industries. A very expensive motor.
For that matter, spend the coin on a small VFD and buy or find a small three-phase motor with the same 56C frame. Small three-phase motors have no value except to hobbyists.
Maybe recover some cost selling the DC motor, but I have no feel whatsoever what the market will bear.
RE: Two electrical questions - Stwood_ - 01-22-2020
Doesn't sound like a good, easy option with that 12V
I'd pick up a cheap 3phase. I have a buzz box I'd give you to convert it.
RE: Two electrical questions - ®smpr_fi_mac® - 01-23-2020
Alright, scored a proper, 120V VAC motor for $40. Game on!
RE: Two electrical questions - Stwood_ - 01-24-2020
(01-23-2020, 07:04 PM)®smpr_fi_mac® Wrote: Alright, scored a proper, 120V VAC motor for $40. Game on!
Sweet!!!
Now, that requires a picture of said motor when you receive it!
