Thanks a lot Todd! That works perfect. I didn't mess around with the firmware yet but since 590hz of max frequency is doing fine for me I didn't worry.
El lun., 20 de marzo de 2023 10:30, Todd Zuercher <to...@pgrahamdunn.com> escribió: > You're minimum frequency and voltage don't seem right. You won't be able > to command a speed below 6000RPM. Which might not be all bad, but that may > also mean that the 0.1v from the analog command input may = 6000rpm and 10v > = 590hz. This might through off your speed command output from your > controller. The bigger problem might be that your volt hz curve output > will be 16.2v @ 200hz then linearly to interpolated to 0 below that and > linearly interpolated up from that point to your mid-range setting of 32.2v > @ 300hz, and then linearly from there up to 380v @ 400hz. With those > settings I'm going to guess that you will have almost no torque below about > 350rpm. (Maybe not even enough to get the spindle running.) 162.0v @ > 200hz and 322.0v @ 300hz would sound more normal for a 380v high speed > spindle to me. Attached are some example Yaskawa VFD settings from a CNC > router manufacturer for some of their spindles used in the past. (These > are for an older 626 model drive, and some of those charts are not high > speed router spindles, but the parameter numbers are usually similar for > the newer model drives.) > > You might also be able to run the drive's auto tuning feature. It may or > may not work. Usually auto tuning in a VFD is geared towards setting up > 50-60hz motors. I suspect it often doesn't work for high speed spindles > designed to operate above 300hz. (All of the drive's I've set up using the > high speed firmware option have the auto tuning feature disabled and it > can't be used.) > > The GA500 drive series is available with the high speed firmware option, > Did you try to get one of those? > > Todd Zuercher > P. Graham Dunn Inc. > 630 Henry Street > Dalton, Ohio 44618 > Phone: (330)828-2105ext. 2031 > > -----Original Message----- > From: Leonardo Marsaglia <ldmarsag...@gmail.com> > Sent: Sunday, March 19, 2023 6:18 PM > To: Enhanced Machine Controller (EMC) <emc-users@lists.sourceforge.net> > Subject: Re: [Emc-users] OT: Air cooled router spindle problem > > [EXTERNAL EMAIL] Be sure links are safe. > > By the way, the red ones are the ones I modified to suit what I think the > motor should be. Please correct me if I'm wrong. > > El dom, 19 mar 2023 a las 19:17, Leonardo Marsaglia (< > ldmarsag...@gmail.com>) > escribió: > > > Hi guys, and thanks for all the responses! > > > > Well, we tested another cable and the problem seems to be the same so > > I got a yaskawa GA500 vfd which goes up to 590 hz so it's fine for me > > since I rarely went above 500 hz with the other VFD. > > > > Is there any consideration about how to set up this VFD? Because it > > seems more complex than the one I've been using, so your experience > > will be more than useful to me. > > > > I attached a pic of the motor parameters. Those are the ones I'm most > > worried about. > > > > > > > > El sáb, 18 mar 2023 a las 23:43, Ryan McIntosh (<r...@pebkac.ca>) > > escribió: > > > >> You can get a cable tracer and ring it as well. Lock out the VFD and > >> you don't even have to disconnect anything if you can reach in and > >> get clips on the UVW wires. A break in the insulation will show up > >> as a bright spot and a break in the conductors will be marked by a > >> sharp drop off. > >> > >> If that is what happened, I'd recommend getting a high quality _drag_ > >> cable for future. They'll be marked TRVVP > >> > >> > >> *Ryan McIntosh* > >> E4F Designs > >> (204)770-3682 > >> r...@pebkac.ca > >> > >> > >> On Sat, Mar 18, 2023 at 7:22 AM Roland Jollivet < > >> roland.jolli...@gmail.com> > >> wrote: > >> > >> > A break in one of the wires would cause it be on two phases, > >> > vibrate and not run. Definitely intermittent as it flexes. A piece > >> > of cable is so > >> cheap > >> > compared to another VFD. Just strap another cable onto the cable > >> > chain > >> and > >> > run it for a few hours. > >> > If it doesn't fail, it's not conclusive, but if it does, then you > >> > know > >> for > >> > certain it's the VFD. > >> > > >> > Cables that flex are a consumable, unless it's very high quality > >> > Lapp > >> cable > >> > or other. > >> > > >> > Roland > >> > > >> > > >> > On Fri, 17 Mar 2023 at 02:50, Leonardo Marsaglia > >> > <ldmarsag...@gmail.com > >> > > >> > wrote: > >> > > >> > > Hi Gene, > >> > > > >> > > Well, it's a little tricky because of the amount of cables I have > >> running > >> > > next to the ones of the spindle. But I checked the integrity of > >> > > the > >> cable > >> > > and by visual inspection it all looks alright. It's a 3 wire > >> > > cable > >> with > >> > the > >> > > black insulating cover so it's pretty well protected. > >> > > > >> > > I really doubt the cable is the problem from what I've > >> > > experienced and > >> > from > >> > > the condition of the cable in general. > >> > > > >> > > El jue., 16 de marzo de 2023 16:52, gene heskett < > >> ghesk...@shentel.net> > >> > > escribió: > >> > > > >> > > > On 3/16/23 12:44, Leonardo Marsaglia wrote: > >> > > > > I've checked that the terminals are connected well but I > >> > > > > didn't > >> check > >> > > for > >> > > > > the entire cable to be alright. > >> > > > > > >> > > > > I thought about it but I really didn't think such an > >> > > > > intermittent > >> > > failure > >> > > > > could be caused by the cable alone. Do you recommend to > >> > > > > install a > >> new > >> > > > cable > >> > > > > just in case? > >> > > > > > >> > > > That depends on how old that cable is, and how much flexing it > >> > > > has endured in its time. And in some instances, what color the > >> > > > plastic > >> > used > >> > > > for insulation is. Magenta, aka hot red or hot pink, contains a > >> > chemical > >> > > > I can't name but it destroys the copper in the wire by > >> > > > converting > >> it to > >> > > > a fine, rust colored powder that may, or may not, properly > >> > > > conduct electricity. That color is most often found in two-way > >> > > > radio > >> microphone > >> > > > cords as the connection to the tx button, or today, more > >> > > > commonly as > >> > the > >> > > > outer jacket of a sata drive cable in your computers. In > >> > > > either > >> case, > >> > > > the failure rate by the time its 5 years old, is well up the > >> > > > far > >> end of > >> > > > the well known bathtub curve. I long ago changed all of mine > >> > > > out for > >> > any > >> > > > color but hot red/aka magenta. End of drive errors. > >> > > > > >> > > > I have serious doubts that is the problem in this case, since > >> > > > the currents involved are definitely capable of starting a > >> > > > noticeable > >> fire. > >> > > > But a hand, run along the length of the cable, looking for hot > >> > > > spots when the failure is in evidence might not be a bad idea. > >> > > > Or better > >> yet, > >> > > > tracing the wire with an IR thermometer or infra-red camera. > >> > > > > >> > > > > El jue., 16 de marzo de 2023 13:37, Todd Zuercher < > >> > > to...@pgrahamdunn.com > >> > > > > > >> > > > > escribió: > >> > > > > > >> > > > >> Have you checked your cabling between the motor and VFD? > >> > > > > >> > > > And please folks, take a break on the mail server, and trim > >> > > > your > >> posts > >> > > > down to the context of your reply. > >> > > > Cheers, Gene Heskett. > >> > > > -- > >> > > > "There are four boxes to be used in defense of liberty: > >> > > > soap, ballot, jury, and ammo. Please use in that order." > >> > > > -Ed Howdershelt (Author, 1940) > >> > > > If we desire respect for the law, we must first make the law > >> > respectable. > >> > > > - Louis D. 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