Topics

1

General Mach Discussion / Lost Spindle speed control

« on: March 17, 2011, 09:26:47 AM »

Hi I have been setting up my router build & bench tested my electronics.

Gecko G540
VFD 2.2kw spindle

I got it all working fine using a relay to turn the spindle on & off with control to accelerate & decelerate spindle speed in Mach3.
I have now put all the bits into there proper home under the router base all neat and tidy.
But when I come to run I have lost the ability to control the spindle speed through Mach3, I can still turn spindle on and off fine everything works as should do,
just the spindle speed problem.
when I turn spindle on in Mach3 it runs up to full speed & no matter what I try I can't slow it down in Mach, works fine through the VFD direct but not in Mach.
I have checked and re checked my wiring all looks good, I will update post with wiring & settings when I get home tonight.

any ideas where to start to track down the problem, I'm at the hair pulling point now ( not too much left to pull )
cheers for any help

2

General Mach Discussion / Metric steps per setup ( quick question )

« on: November 23, 2010, 08:41:39 AM »

Sorry for the Nub question but the more I read the more I'm confused

Uk so going to run metric.
Gecko G540 with 1.8 steppers
Ballscrew 1605

when I set steps per unit this is what I think I need to put, If someone could confirm I have it right would be of great help

1.8 * 360 = 200 steps for motor
200 / 5 (5mm ballscrew move) = 40 steps per unit

so I make that one turn to move 1mm is that what I should have,
I have seen imperial setting where lead is  multiplied to the motor steps hence why I'm confused
cheers
KAT the Noooooob