thanks. JDecrease a motors RPM?
Aaron B mentioned something about %26quot;frequency converter%26quot;, this is something you dont want to do if you dont have any understanding of how it works.
Speed controlling can be done in many ways, first you need to know the types of the motor that you want to control.
Induction/phase control/ac motor/dc motor/ etc...then you can search how to control the speed..
I believe you have a standart DC motor(2850-3450RPM)/(7500-22000rpm), if so then what you need is just a variable resistor/potentiometer..that will work just fine for a simple application..
For a more precise speed controlling maybe you want to check out the PWM..Decrease a motors RPM?
You need a VFD (variable frequency drive).
If it is a solid state motor (probably is) something as simple as a light switch dimmer should do the trick. It is a cheap experiment to find this out at least.
The problem with these is that the motor speed is greatly effected by the load.
If this doesn't work you'll need a 'solid state speed controller' and make cost a little bit more.
Last but not least, if it is an Induction motor you'll need a variable frequency converter and is very expensive and a pulley system may be cheaper and easier.Decrease a motors RPM?
the speed variation can be done with two ways, either by reducing the frequency of motor which mean you have to prepare a VFD ( Variable frequency drive )
http://en.wikipedia.org/wiki/Variable-fr
or by using a Voith coupling between the drive and the motor called as hydraulic coupling. In this case you don't reduce motor speed but you can reduce the power output by motor because of hydraulic connection between the motor and driven machine !
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