I get mine direct from Bergerda (3 just arrived yesterday). Payment is via credit card on Alibaba. Shipping is an arm and a leg for FedEx. But then often shipping into Canada from some of these sites also lists between $80 and $130 for a $200 drive so hard to say.
Found out they were also charged $20 for a magnetic inspection. There is a label on the box that states the Gauss reading at 2.1 meters. Don't know if FedEx insists on that to prevent interference on their aircraft or if it's just a general thing. Even with FedEx it still took 6 days which I guess is better than 3 to 5 weeks. What I did find out with the temporary POS Gecko replacement was that although the stepper driver boxes may look identical on the outside they aren't the same inside. The one I bought off Amazon for $80 Cdn (Free Prime Shipping) on the inside according to Bergerda doesn't match theirs. And apparently all their PC boards have their logo on it. The Amazon one has an audible 3.6kHz very awful whine when idle. It looks like there is a lot of copying going on. I've seen identical looking motors without drives going for $80 to $200. I'll have the 0.73kW, 3.5NM, 0-2000 RPM drive hooked up to the milling machine knee later this week. I'll report on how it goes then. John > -----Original Message----- > From: Dave Cole [mailto:[email protected]] > Sent: December-30-20 8:46 AM > To: [email protected] > Subject: Re: [Emc-users] Chinese VFDs with good reputations > > I usually include a input power line filter on servo and VFD > applications if there is a computer or PLC involved.� I've done a few > machines without drive input filters and noise problems have bit me.��� > Fixing the problem after the fact costs more in wasted time than the > cost of the filter/s. Automation Direct was selling filters suited to > powering multiple drives.��� Not sure if they still do. > > Where are you guys buying the Bergeda drives? > Ebay? > > Thanks, > > Dave > > On 12/30/2020 3:13 AM, David Berndt wrote: > > Hi John, > > > > You've got me a bit interested in these drives. I'm currently looking > > for the biggest single phase servo I can easily find, looks like the > > Bergerda 1.8 or maybe even 2.6kw might be it. But it's always a bit > > hard to tell with the lower quality documentation these companies > > provide. Can you confirm/deny that the 1.8kw can run on single phase?� > > What drive model number are you using? > > > > Anyone else have any experience with the 2.6kw Bergeda? Looks like the > > LiChaun A4 series might also be of interest? > > > > > > > > Thanks, > > > > -Dave > > > > > > On Sat, 26 Dec 2020 13:48:29 -0500, John Dammeyer > > <[email protected]> wrote: > > > >> I looked at prices for a 2HP 3phase and a VFD (like Hitatchi > >> Vectorless?) and found without shipping the price was approaching > >> $600.� For less than that I ended up with Bergerda. > >> > >> I'm using a Bergerda AC Servo 110SM series (1.8kW, 6NM)� on my > >> spindle, currently with a cheap PWM module until I wire up a second > >> BoB for step/dir control.� With PWM I get 100RPM to 3000RPM without a > >> belt change.� With stepper I can have it move very very slowly. > >> > >> I also swapped in, for testing, a smaller 60SM series 1.27NM Bergerda > >> onto the X axis.� Once I read the manual correctly I got step and > >> direction working well.� The drive isn't overly large but is a bit > >> bigger than the HP_UHU which runs the brushed servo motors also 1.2 NM. > >> This video shows it now working.� I can get 180ipm on the X axis just > >> like the much bigger DC Servo. > >> https://youtu.be/43liAVILgHY > >> > >> The Gecko Stepper G213V driver on the knee has now failed for the > >> second time melting the connector again.� Absolutely no response from > >> Gecko so it's being scrapped and FedEx tracking says my new Bergerda > >> AC 80SM series servo (3.5NM) will arrive on Wednesday along with 2 > >> more of the small 60SM units. > >> > >> They aren't cheap compared to stepper motors.� In my case I get to > >> remove a complete Toroidal power supply that runs only the stepper > >> but is big enough for the entire mill with 60VDC motor drivers. > >> > >> The DC Servos and Harmonic drive (controlled with STMBL) run on a > >> 105DC Toroidal power supply.� I could remove this and run the > >> Harmonic off 110VAC to DC with a smaller isolation transformer. Then > >> I'd have room for the Bergerda drives. > >> This is the MACH3 Road Runner with the much bigger DC Servos and the > >> 1200 oz-in (drops to 3.5NM at 300RPM) on the knee. > >> https://youtu.be/OUQzyp-3WXY > >> > >> I've found support and price excellent, shipping horrendous. For > >> example I found that when the spindle stopped it would sometimes sit > >> with a bit of a squeal.� A quick email to Bergerda and discussion and > >> we figured out which parameters to tweak. Now it's dead quiet.� And > >> much smaller than the single phase 1.5kW 2HP motor. > >> http://www.autoartisans.com/mill/NewPulleys-1.jpg > >> > >> John Dammeyer > >> > >>> -----Original Message----- > >>> From: Dave Cole [mailto:[email protected]] > >>> Sent: December-26-20 9:44 AM > >>> To: [email protected] > >>> Subject: [Emc-users] Chinese VFDs with good reputations > >>> > >>> What low cost Chinese drives have you guys used with great success? > >>> > >>> I'm talking mostly single phase input drives. > >>> > >>> There are a lot of look a likes on Ebay.?? Some are dirt cheap. Others > >>> not so much. > >>> > >>> Some specify that they are specifically for water cooled spindles, etc. > >>> > >>> Others say almost nothing. > >>> > >>> Dave > >>> > >>> > >>> > >>> _______________________________________________ > >>> Emc-users mailing list > >>> [email protected] > >>> https://lists.sourceforge.net/lists/listinfo/emc-users > >> > >> > >> > >> _______________________________________________ > >> Emc-users mailing list > >> [email protected] > >> https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > _______________________________________________ > > Emc-users mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
