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Author Topic: PWM inverter for 12 VDC motor  (Read 6061 times)

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PWM inverter for 12 VDC motor
« 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
 :-\ :-\

Offline Jeff_Birt

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Re: PWM inverter for 12 VDC motor
« Reply #1 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. 
Happy machining , Jeff Birt
 
Re: PWM inverter for 12 VDC motor
« Reply #2 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 

Hood

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Re: PWM inverter for 12 VDC motor
« Reply #3 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
Re: PWM inverter for 12 VDC motor
« Reply #4 on: August 29, 2007, 03:32:05 PM »
Thank you Hood! I think it is all I need
Best wishes
Vladimir

Offline Jeff_Birt

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Re: PWM inverter for 12 VDC motor
« Reply #5 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.
Happy machining , Jeff Birt
 
Re: PWM inverter for 12 VDC motor
« Reply #6 on: August 29, 2007, 05:49:35 PM »
Thank you Jeff.
I will check it out.
Vladimir