Comments on: 3-phase magic trick http://openservodrive.com/3-phase-magic-trick/ Cutting edge without Bleeding edge Thu, 15 May 2025 12:21:32 +0000 hourly 1 http://wordpress.org/?v=4.1.12 By: Richard Harcourt http://openservodrive.com/3-phase-magic-trick/#comment-3293 Tue, 29 Sep 2015 20:15:35 +0000 http://openservodrive.com/?p=1327#comment-3293 just to clarify, my point is I do not actually know which model I have , I suspect they are all VSD-XE as they all have the finned channeled heatsink but I am not sure if they are or not and does the heatsink also infer that these are later 160v units or are they 80v version…….. Who knows one day I might want to use a higher voltage….. cheers

]]> By: Richard Harcourt http://openservodrive.com/3-phase-magic-trick/#comment-3289 Tue, 29 Sep 2015 01:00:18 +0000 http://openservodrive.com/?p=1327#comment-3289 Also, is the 2.11 with magic trick firmware considered safe? Has it been well tested? Thanks

]]> By: Richard Harcourt http://openservodrive.com/3-phase-magic-trick/#comment-3288 Tue, 29 Sep 2015 00:59:04 +0000 http://openservodrive.com/?p=1327#comment-3288 Hi, I am about to finally attach my VSD-E units to my CNC. I am running a 70V 20A power supply so I am under the 80volt for the VSD-E, but to be honest I am not sure about the following.

VSD-E vs VSD-XE – is this a difference in the heat sink and the max current?

Is there also a difference between an 80v and 160v capable VSD – what distinguishes that?

Thanks
Richard

]]> By: Jason Jack http://openservodrive.com/3-phase-magic-trick/#comment-2547 Tue, 23 Dec 2014 03:24:04 +0000 http://openservodrive.com/?p=1327#comment-2547 I’m out of ideas now :) Looking forward to the high current replacement for VSD-E actually!

]]> By: Tero http://openservodrive.com/3-phase-magic-trick/#comment-2533 Sun, 21 Dec 2014 10:01:42 +0000 http://openservodrive.com/?p=1327#comment-2533 Field weakening would work without any difficulties as well. However, field weakening generally has few shortcomings that I don’t like:
* no clear procedure for tuning it
* also position/velocity servo gains above certain speed threshold would not stay constant
* risk of damaging hardware if drive is being disabled or faulted at high speed (motor generates voltage that is greater than HW maximum)

]]> By: Tero http://openservodrive.com/3-phase-magic-trick/#comment-2532 Sun, 21 Dec 2014 09:58:12 +0000 http://openservodrive.com/?p=1327#comment-2532 Sure, no big deal actually. We’ll probably do that as well. Any other good ideas for VSD-E? :)

]]> By: Jason Jack http://openservodrive.com/3-phase-magic-trick/#comment-2524 Fri, 19 Dec 2014 19:53:27 +0000 http://openservodrive.com/?p=1327#comment-2524 Another question! Any chance of extending this feature all the way back to VSD-E and XE?

Thanks,

Jason

]]> By: Jason Jack http://openservodrive.com/3-phase-magic-trick/#comment-2523 Fri, 19 Dec 2014 19:51:20 +0000 http://openservodrive.com/?p=1327#comment-2523 Very cool! This wouldn’t sacrifice efficiency for the higher speed like field weakening would it? Would it be possible to add field weakening as well?

Regards,

Jason

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