Best way control motor rpm...
Best way control motor rpm...
(OP)
HI,
I'm looking for help in determining what I need for the control winding circuit of this motor:
http:// www.surplu scenter.co m/item.asp ?UID=20080 4231530300 6&catn ame=&q ty=1&i tem=5-1105
I'm trying to keep this setup as small as I can and cost is a factor also.
I have been using a small gear-motor vac with a fixed rpm of 80 for use as a hot liquid mixer. It overheats after about 15 minutes - probably since its not rated for continuous duty. I was able to add a low voltage cooling fan & heat-sink to solve that problem.
With all that added, the case is getting larger, and since I now see the need for an adjustable rpms - looking a for a new solution.
Guidance or input is appreciated....
Kevin
I'm looking for help in determining what I need for the control winding circuit of this motor:
http://
I'm trying to keep this setup as small as I can and cost is a factor also.
I have been using a small gear-motor vac with a fixed rpm of 80 for use as a hot liquid mixer. It overheats after about 15 minutes - probably since its not rated for continuous duty. I was able to add a low voltage cooling fan & heat-sink to solve that problem.
With all that added, the case is getting larger, and since I now see the need for an adjustable rpms - looking a for a new solution.
Guidance or input is appreciated....
Kevin





RE: Best way control motor rpm...
BK
RE: Best way control motor rpm...
RE: Best way control motor rpm...
Can't tell what that motor really is though. I would suspect that the motor itself is just a capacitor start 1 phase motor (hence the need for an external cap)> So the 0-10VAC speed control signal is maybe going to an eddy current or magnetic clutch drive perhaps? Hard to tell with surplus stuff like that.
RE: Best way control motor rpm...
Steve
RE: Best way control motor rpm...
But at $18?? Doesn't work no loss.
Keith Cress
kcress - http://www.flaminsystems.com
RE: Best way control motor rpm...
I'd check for continuity between the main leads and the control leads. If one line is common then possibly the motor is running with the main windings in series with the clutch/control winding. That would explain how it could work now with no 10 volt supply.
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: Best way control motor rpm...
can be done with it. As was mentioned, it won't break the bank if it doesn't work...
Kevin
RE: Best way control motor rpm...
I don't know that a simple voltage divider setup will suffice. The control input may be low impedance in which case you may need something to boost the current, a pair of transistors perhaps.
I wonder if a stepper motor would be simpler, you should be able to run one of those at whatever speed, you don't give the torque requirement.
Roy
RE: Best way control motor rpm...
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If we learn from our mistakes I'm getting a great education!
RE: Best way control motor rpm...
Keith Cress
kcress - http://www.flaminsystems.com
RE: Best way control motor rpm...
----------------------------------
If we learn from our mistakes I'm getting a great education!
RE: Best way control motor rpm...
RE: Best way control motor rpm...
BK
RE: Best way control motor rpm...
The last picture shows a DC motor.
The link on the original motor shows a capacitor in series with one of the leads. (Go to the link and then click the wiring tab.) A DC motor won't work with a capacitor in series with one of the leads.
Bill
--------------------
"Why not the best?"
Jimmy Carter