Background – Am attempting to make raised panel doors. The router bits call for a maximum speed of 7000 rpm. The no-load router speed is 24000 rpm. The router is a brush type nonvariable speed 3hp rated at 20amps. I hooked it up to an external electronic speed control rated at 15amps.
The Problem – At the reduced speed, the router has no power at all. Is this typical of any brush type motor being reduced in rpm to this extent or is it the speed control rated 15amps or is there something else?
Any help will be greatly appreciated!
Roy
Replies
Many of the large routers with built in speed controls won't drop down to 7,000 rpm at their lowest speed, 10,000 rpm is more typical, which would suggest that is the lowest practical speed.
The built in speed controls are more sophisticated than your accessory version and are engineered to get the maximum performance out of the specific motor they are mounted on, something that your control can't do. The 15 amp rating on your control may be limiting the power available but I can't be sure of that, but trying to draw more power through the control than it is rated for can cook its electronics.
John White
This forum post is now archived. Commenting has been disabled