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Author Topic: Help Please with PWM Spindle Motor Speed  (Read 13267 times)

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Re: Help Please with PWM Spindle Motor Speed
« Reply #10 on: November 11, 2014, 03:33:42 AM »
Hi
The spindle pulley set up is in the config menu third from bottom. I am new to this aswell but the way I understand it is this:
Select the pulley you are using.
Enter your min and max speed
If your motor pulley has 1 tooth and your spindle pulley has 5 teeth. That would give a ratio of 1/5.
You take the spindle speed and divide it by the motor speed which in this case would be 0.20.
This is then entered into the pulley ratio for pulley 1 or whatever pulley you are using.

I think this is right but please advise me otherwise.

Cheers
Mick
Re: Help Please with PWM Spindle Motor Speed
« Reply #11 on: November 11, 2014, 04:18:57 AM »
Thank you Mick. I see now where it is to go.
God created Ale to make us all happy ..... 8)
Re: Help Please with PWM Spindle Motor Speed
« Reply #12 on: November 11, 2014, 10:20:06 AM »
 Well another wasted day. (not that I have anything else to do!) This thing just does not want to do what I want it to do. I have set Pulley 1 to a minimum of 1000RPM and a Maximum of 10600RPM, then set the ratio on that pulley to 0.2

Working on the MDI if I enter 1500 RPM The Spindle Motor Clocks 6100RPM and at an input of 2000 it clocks up 8200

No matter what I chenge in the pulley setting input it just bloodywell does what it wants. Does it need to  restarting after any changes to the Pulley settings  ????

I know I'm doing something stupid, but for the life of me I cannot fathom out.
God created Ale to make us all happy ..... 8)
Re: Help Please with PWM Spindle Motor Speed
« Reply #13 on: November 11, 2014, 05:41:42 PM »
Hi
Are you using a 0 to 10v input to your VFD from your breakout board?

Cheers
Mick
Re: Help Please with PWM Spindle Motor Speed
« Reply #14 on: November 12, 2014, 08:05:50 AM »
I am not too sure what a VFD is? My Breakboard PWM Output is connected to the Spindle Motor Controller. The controller can support a PWM Signal between 1Kz and 5Kz
God created Ale to make us all happy ..... 8)
Re: Help Please with PWM Spindle Motor Speed
« Reply #15 on: November 12, 2014, 08:33:12 AM »
Hi
I don't know what BOB you have but mine gives out a 0volt to 10volt output depending on what rpm is entered. So if you enter 0 rpm it will give 0 volts and if you enter max rpm eg 3000rpm it gives out 10 volts. This voltage tells the VFD (variable frequency drive) how many HZ to use to control the speed. I think your speed controller is probably the same thing but you need to check if it works in the same way.
What speed controller do you have?

Mick
 

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Re: Help Please with PWM Spindle Motor Speed
« Reply #16 on: November 12, 2014, 10:13:54 AM »
Take pics of the system with your phone and post them here.

 Btw, you arent the first to be dumbfounded by the spindle set up.

After rereading your entire thread, at no time do you disclose the equipment you have. Do us a favor and do so.
« Last Edit: November 12, 2014, 10:15:42 AM by Fastest1 »
I want to die in my sleep like my grandfather, not like the passengers in the car! :-)
Re: Help Please with PWM Spindle Motor Speed
« Reply #17 on: November 12, 2014, 10:22:02 AM »
Why wouldn't you disclose what equipment you have??

Mick
Re: Help Please with PWM Spindle Motor Speed
« Reply #18 on: November 12, 2014, 01:03:07 PM »
Sorry fastest1 miss read what you wrote.

Mick
Re: Help Please with PWM Spindle Motor Speed
« Reply #19 on: November 13, 2014, 05:56:06 AM »
My CNC Kit is as follows:
Tonsen TS3040C-H80
I have fitted limits, e-stops, and replaced the Flexi-shaft hanging spindle motor with a 400W ER11 Spindle Motor. The Controller is powered by a 48V 10A SMPS.
The Manufacturers of the Motor and Controller makes the following claim:
Spindle Motor
Max 12,000 RPM
Max DC input 50V

Controller

Max Input 110V AC/DC
PWM Input Range 1kHz – 5kHz
God created Ale to make us all happy ..... 8)