2012/12/18 Todd Zuercher <[email protected]> > So could you tell me some more about these drives. How are you using > them, analog, or digital? How were they to tune? Do you have to use > Windows to run their tuning software? Is the cabling that comes with them > of reasonable quality for continuous flex and is it shielded?
Todd, First of all I was wrong about 1.5yrs, I purchased the motors last spring. The drive has many parameters for position/speed/torque loops - gain settings, time constants, filters to suppress resonance etc. Total 150 parameters or so (while Dyn3 settings are so very basic as I see from its manual). The parameters resemble older Yaskawa drives as I said. They declare 400Hz frequency response of speed loop, that's not Sigma5 with 1600Hz, probably something like Sigma2. I don't know how to check that response. I connected the drives to MESA 7i48 with +-10V in velocity mode. As I said they have no tuning software or even PC connector, no auto-tuning. Though auto zeroing is available for analog input. I used HAL scope and tuned PID parameters in LinuxCNC. Tuning was no problem IIRC. I did not even have to use filters for resonance. The cables are flexible enough, 3m lenght as a basic set. I can't say about continuous use, it also depends on bending radius. The encoder cable is shielded and has 15pin connector. The motor cable has 4 wires and no shield. The drives use three-phase 220V power (but one phase is enough for motors 750W and less). Andrew ------------------------------------------------------------------------------ LogMeIn Rescue: Anywhere, Anytime Remote support for IT. Free Trial Remotely access PCs and mobile devices and provide instant support Improve your efficiency, and focus on delivering more value-add services Discover what IT Professionals Know. Rescue delivers http://p.sf.net/sfu/logmein_12329d2d _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
