Originally Posted by
Fastest1
Nice work. I think you will find comparable results with all controllers if the voltages are the same. I have 3 different ones and I have run a few of my machines on all of them. I cant tell a difference. They have different options and packaging. Hobby Cnc Pro, G540 (2 actually) and a PMDX-126/5056D combo.
Thanks.
I basically agree with your statements. A stepper driver is providing power to the motors. So a G540 running at 48V and 3.5A will provide the same power to a 387 oz.in motor that it would to a 570 oz.in motor.
In fact, with this setup the 387 oz.in should perform better than the 570 oz.in motor as the latter has a greater detent force than the 387 oz.in motor and will consume more of the power to overcome this.
secondly, the G540 (and all Geckodrives) has mid-band resonance compensation that will stop the motor consuming power just to overcome this resonance as happens with other makes of stepper drives.
And thirdly, the Geckodrives morph from microstepping to fullstepping once the speed passes 3-4 revs/second. This results in the power being available more quickly and thus better performance from the motors.
I'm sure that the G540 and the 387 oz.in motors will provide adequate performance, but I want to do a comparison to see if the bigger motors and drives are justified.
Cheers,
Peter.
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