RE: Power supply transformer setup questions...

Turbulatordude, Tim Goldstein

Thanks! Now this makes so much more sense in terms of power (actual power
units).

Horray for first year physics and high school physics... :)

Thanks again


-----Original Message-----
From: turbulatordude [mailto:davemucha@...]
Sent: September 10, 2003 5:30 PM
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: Re: Power supply transformer setup questions...

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Lloyd Leung" <lloyd@l...>
wrote:

> Not that I doubt you, but can you explain why then it is suggested

that I

> use 2/3rd of the sum of the motor amperages then?
>
> The setup will be using 3 G201 drives, connected to three motors.
> One 3A/3V motor, and two 3.5A/4.2V motors.
>
> I would have thought that a 6.7Amp rated transformer is required.

Lloyd,

look at the total watts of the motors.

The chopper drivers cannot supply more, even if you have such an over
sized power supply.

one motor is 9 watts
the other 2 total 29.4 watts for a grand total of 38.4 watts.

if you run at 60 volts, then the required current is 2.04 amps for
ALL 3 motors.

If you want to run 6.7 amps, you will have pleanty reserve.


The answer to the treansformers is based on matching units for
parallel use, match amp loads for series.

Dave


















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