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Author Topic: mach conversion to a cincinnati sabre 750  (Read 4980 times)

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Re: mach conversion to a cincinnati sabre 750
« Reply #10 on: March 20, 2012, 06:18:58 PM »
so rectify and see what i get? how do i smooth it out?
thanks as always!

Offline Hood

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Re: mach conversion to a cincinnati sabre 750
« Reply #11 on: March 20, 2012, 06:29:06 PM »
When you rectify and smooth AC you will get approx 1.4 times DC out.
You use capacitors to smooth the rectified voltage, think usually they reckon about 2000uF per amp.
Looking again at your motors however you may need a transformer as they are 230v so if using your mains direct that would give you 308vdc which may be too high. It will depend if the drives can limit the voltage put out, you would have to read the manual to see if thats the case. I would imagine they would but better check ;)
Hood
Re: mach conversion to a cincinnati sabre 750
« Reply #12 on: March 20, 2012, 06:32:04 PM »
how do i look for a transformer to get me down in voltage?
this is new tech to me. i can do geckos but thats about it....

Offline Hood

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Re: mach conversion to a cincinnati sabre 750
« Reply #13 on: March 20, 2012, 06:35:44 PM »
Most transformers are used to drop voltage but you can also use them to increase if needed. Anyway best check the manual for the drives. I saw they take 250 to 350 dc so I would presume they can be set to limit voltage out to the motor even if input voltage is higher than you require but maybe not.
Hood
Re: mach conversion to a cincinnati sabre 750
« Reply #14 on: March 20, 2012, 06:44:34 PM »
hhmmmmm....
i guess i will see if i can find some info on these as i do not have a manual.

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Re: mach conversion to a cincinnati sabre 750
« Reply #15 on: March 20, 2012, 06:49:51 PM »
I just googled for BDS4 drives and got the manual.
Hood
Re: mach conversion to a cincinnati sabre 750
« Reply #16 on: April 07, 2012, 12:01:11 AM »
so i got a new 7.5hp (20A) 3ph motor for this thing and are exploring my options.
i am wondering if this will run it....
http://www.a-m-c.com/download/datasheet/b30a40ac.pdf

i am planning on getting the kflop boards too