Variable speed control

T

Teknotchr

Joined
Aug 27, 2001
Messages
34
I have a catalog from MCLS Woodworking Products(mlcswoodworking.com) that has a speed control available for routers up to 3 1/4HP to adjust the speed of a router for $30.00. Do you suppose I could connect this to my Grizzly and make it variable speed? It is rated as 120v, 15 amps. Any help would be appreciated.:confused:
 
I tried one of these on my older Bader and they don't seem to work very well for that aplication. When trying to slow it down you get a pulsating off/on thing going on. I believe I will end up using it for which it was designed (a router) and finding a flexible shaft that I've heard about that fits onto routers.

Steve
 
Steve's right. They won't work on full size motors.
They would in the end, burn up the windings.
There are two ways to go, either a DC, permanent magnet, or shunt wound motor, with the solid state motor control. The other way is with a three phase AC motor, a phase converter, and controls.
I am a little fuzzy on the three phase setup. Jonesy, who is a member here(I believe) sells this gear. The big advantage to the three phase AC setup is, no torque loss. You can't bog it down.
All it takes is $$$$, for either. ;)
 
Yes it needs to be a DC motor OR

A Three Phase motor running on 220 volt with a
  frequency devider will do it.
 coolest thing you ever saw.
 My surface grinder and vertical mill runs off one.
It's a little box about 4" x 5" you can turn the RPMs up and down with
a little knob,  about $350.00 plus your motor:D
 
Yea I've got the same setup on my homebuilt grinder and it is amazing. You need a three phase 220 volt motor, a frequincy inverter thats rated at 220 volt and the hp rating of your motor, also has to be 220 volt or it wont work. Just hook both hot wires from your 220 supply and the inverter makes up the other leg. Not sure how this affects motor or inverter life but I've been using it for 6 months and have had no problems yet.

If you need anymore info let me know and I'll get some model info off the inverter. The motor is just a 2hp 3 phase baldor.

Chris
 
The one I have is a
FVR-C9s by Fuji  get or order one from your
electrical contractor supply outfit
 
it will work on any 220, 3 phase motor
 up to 2 HP you can buy one for bigger motors too.

( I'm not sure on the 208 motors these
are for 440 volts I think)

I have mine hooked up to both Machines I just run one at a
time because both motors = over 2 HP.
you run your regular 220 volt from your ele box going
into the frequency devider then three wires from the unit to
your Motor. I've been using mine for well over a year with no
problems.

don't let the rest for this mumbo jumbo confuse you

they tell me this frequency devider is doing
away with the old phase converters
be it the so so box converter taking the place of the
rotary converter (cheaper but cost more to run)

nether of the two is a true three phase anyway
( the rotory or the so so box converter.)
3 or 4, 3 phase motors hooked up in line
will get you closer to true
3 phase coming out of the last motor but just
not worth the trouble.

The frequency devider is easy and just great to use
for many resons...
 
If anyone would like info on the Variable speed controllers and Motors just drop me an email at

Jonesknives@juno.com

they are really cool and work great.
Its all new stuff and made to run as a package(motor and drive)

Drive- 220 single phase in and 3phase out for the motor
AC variable speed has come a long way and cheaper than DC comparable hp for sure
1800 rpm constant torque
reversible
56 c-face with foot
fits baders and burr king etc.
TEFC (totally enclosed fan cooled)

Thanks for mentioning me also, I appreciate it.
Jonesy
 
I have one of Jonesy's AC setups on my most recent Bader and it rocks. The thing will not stall, and is much smoother than the DC variable I got on my first Bader.
 
Here's one I got from Jonesy on my little bench mill....

13164256-a0d0-02000180-.jpg


It's a 3hp setup, and the variable speed feature is great! No more switching pulleys, and I can finally run at all those "in-between" speeds! :D
 
I recently set up an Allen Bradley variable frequency drive and a
2HP Reliance motor. works great. The good thing about AC is that I also got a 1hp Baldor that I can use with this variable speed drive real cheap. AC 3 phase motors are cheap!
 
Whoa! You can do that? I don't have a mill yet but I sure want one bad. You can put a 3hp on one of those bench mills? What does a set up like that run? I am really starting to get into all of this. I was checking out a gunsmithing forum that I am pretty sure I got the link from here and they make some nice weapons with mills like that! :eek: Man, you guys are such a wealth of information! The internet rules! :D
Sorry to sway from the main topic, I am still looking for a motor setup for my grinder. Just floored me when I saw that mill set up with 3hp. Never would have thunked it. :D
 
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