Hello everyone,
I have been planning to purchase a VSD-E, as Tero said that servo stepper is available, and will be improved at later firmware versions.
Now - During my past, I have been meddling around with stepper motors, ranging from 200 oz/in to 1810 oz/in, I have been using G201, G202, and G203V, and my first wiring knowledge comes from CampbellDesign's How to Build A Power Supply : http://campbelldesigns.net/files/pow...ply-part-1.pdf
and I have been using it happily ever since =)
Now I will try out VSD-E on servo stepper mode, which means a stepper coupled with an encoder, very soon.
But reading back in the Campbell's Power Supply PDF, it says that I need to supply 20 times the rated voltage, and multiply it with 67%. Supposedly I'm using KelingINC's 1810oz/in, the phase voltage is 6.6volts, which means:
6.6VDC x 20 times = 132VDC.
132VDC x 67% = which is 88.44volts.
Then I'm using a 600W for that setup, at 59VDC, which means a lower utilization of max stepper speed.
88.44volts is the 100% utilization of the max stepper speed.
I remember Mariss said 55volts is the best for steppers, but that is for Geckodrive's products.
I'm trying to say that - I'm worried that once I use VSD-E, I won't get good torques from my 1810oz/in stepper.
Anyone used VSD-A or VSD-E with stepper before? How was your power configuration? How was the stepper perfomance? Did it lose torque or RPM?
Like in the VSD-E Manual, it doesn't specify about times 20 of the voltage phase and reduce it to 67%. Should I use the Campbell formula, or the VSD-E formula?
Charles