Leeson Speed control problems

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Protactical

Joined
Aug 24, 2003
Messages
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I have a 110V 1.5 hp Leeson motor with speed control that I use on my KMG. Recently it seems to be more or less ok at the high end, and at a crawl, but in between it sorta surges off and on. It could conceivably be the extension cord it is on, since it isn't right into the wall, but baring that I was wondering whether this is comon, and whether there are any adjustments?:confused:
 
Take the cover off and adjust the trim pots. There should be one for this, perhaps exceleration/deceleration speed or something. They are not usually labeled, but it only takes a few minutes of fiddling to get the thing running perfectly. Also, check to make sure it is switched for 110V, as opposed to 220V. Use plastic screwdrivers (at Radio Shack, I think) to avoid shock, etc.

Good luck,

John
 
The adjustments inside are in order, L-R;
Accel, Decel, Max Speed, Min Speed, Torque, IR Comp.

If the motor is surging at lower speeds, set the speed control to where the motor surges, then adjust the IR Comp trimpot on the right hand side.
Turn the IR Comp CCW until the motor just stabilizes. That's supposed to be the optimum setting.

All adjustments increase with clockwise rotation and decrease with counter clockwise rotation.
USE NON METALLIC SCREWDRIVERS TO ADJUST. You can get them at Radio Shack. They come in a small shirt pocket pack in an assortment of sizes for a few bucks.
If you don't use non metallic, you stand a good chance of shorting out the circuitry.

The torque adjustment sets the max current which the control will deliver to the motor. If you advance it past the factory setting you risk damage.
It has nothing to do with the surging anyway.

I have heard of people increasing the torque to get more without any problems, if care is used.

None of the other controls need to be messed with.
 
Thanks. I always know there will be some guys with the goods on this site. The technical depth is inexhaustible!!

By the way, is it possible to move the controller between motors in the shop? Using standard plug connections between the controler and various motors of the same size? I assume it is, but figured I might as well ask. It would be cheaper to get some complete set-ups off ebay, than to buy another leeson... if I lived in the states.
 
Thanks Ray. What I am suggesting is running other Leeson motors that are designed to run with this controller. The controler is connected to the motor with a cord. I was just suggesting breaking that cord with a male and female plug so that I could move it around to the other identical motors, should I buy more. I can't seen any reason why this wouldn't work, unless the plug isn't a safe connection.
 
I really want to know if this is possible too! That would be a great way to double/triple up on your equipment!
John
 
Protactical said:
.........................
By the way, is it possible to move the controller between motors in the shop? Using standard plug connections between the controler and various motors of the same size? I assume it is, but figured I might as well ask. It would be cheaper to get some complete set-ups off ebay, than to buy another leeson... if I lived in the states.
Click to expand...


Yes it is possible, though you may have to make minor trimpot adjustments between motors as they're not all going to be exactly the same, but close anyway..

One person here some years ago set his up with a switch that went to two motors from one controller. The switch was a multi terminal one with center off and on, on either side. He could run motor "A" with the switch in the left position for example, and when he wanted to run motor "B", he switched motor "A" off by moving the switch to center, and then to the right. Said it worked OK. I'm sure there are various ways to do this that may even be better.

Another maker had identical plugs coming from each motor that would mate with the corresponding receptacle from the single controller, so he just unplugged one and plugged in the other when he wanted to switch to another motor.
The wiring of such devices I'll leave up to you. Just be careful. :eek:;)
 
and Hi Mike Hull:thumbup: I trust all is well and I did like your explaination as to the thread question. Wanted to add but found it unnecessary.

RL
 
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