Machsupport Forum

Mach Discussion => General Mach Discussion => Topic started by: vladimir059 on August 28, 2007, 05:20:29 AM

Title: PWM inverter for 12 VDC motor
Post by: vladimir059 on August 28, 2007, 05:20:29 AM

Hello everybody!

I have 12VDC spindle motor. Can you point me to a good PWM inverter which can be controlled by Mach3 (speed an direction)? 
Thank you in advance
Vladimir
 :-\ :-\

Title: Re: PWM inverter for 12 VDC motor
Post by: Jeff_Birt on August 29, 2007, 10:29:28 AM

If you have a 12VDC motor you don't need an inverter (which converts DC to AC).  You need to look for a speed controller that will drive a 12VDC motor. 

Title: Re: PWM inverter for 12 VDC motor
Post by: vladimir059 on August 29, 2007, 01:12:31 PM

Thank you Jeff ,
I'm sorry, this is terminology mistake. Yes I'm looking for a speed controller which drives 12VDC motor and controlled by PWM impulses generated by Mach3
I'm looking for a diagram or something from the shelf.
Best regards
Vladimir 

Title: Re: PWM inverter for 12 VDC motor
Post by: Hood on August 29, 2007, 02:54:46 PM

Have a look at Peter Homann's board. could be what you are after

http://homanndesigns.com/store/index.php?main_page=product_info&cPath=1&products_id=21
Hood

Title: Re: PWM inverter for 12 VDC motor
Post by: vladimir059 on August 29, 2007, 03:32:05 PM

Thank you Hood! I think it is all I need
Best wishes
Vladimir

Title: Re: PWM inverter for 12 VDC motor
Post by: Jeff_Birt on August 29, 2007, 04:27:57 PM

The Homan Digi-Speed board converts the Mach PWM signal into an analog reference voltage, you still need a speed controller.  A quick search turned up this: http://www.centent.com/cn0105.htm

Never used on of them though, but it might give you an idea of what to look for.

Title: Re: PWM inverter for 12 VDC motor
Post by: vladimir059 on August 29, 2007, 05:49:35 PM

Thank you Jeff.
I will check it out.
Vladimir