I found some hints from a electrospindle manufacturer about VFD programming to get the motor working :
> When the inverter is connected with the motor it must be remembered to > modify some inverter parameters to allow the motor work properly and not to > be damaged. > > *Warning:* > > - feeding the motor with a wrong feed curve can irreparably damage the > motor in a few seconds. > - the factory setting of every inverter must be modified to allow it > to work with a HF motor/electrospindle. > > *Most important parameters:* > > - *Base Frequency (point A):* it is the frequency to which it > correspond the maximun voltage acceptable by the motor (base voltage). The > factory setting of this parameter is usually 50Hz this parameter must be > setted equal to the base frequency of the motor (usually 100Hz, 200Hz, > 300Hz, 400Hz depends on the motor type). The value of the base frequency of > your motor is written on the nameplate or in the instruction sheet. > - *Base Input Voltage:* it is the maximum input voltage to which the > motor can work. Generally this value is 220V or 380V, it depens on the > motor wiring. > - *Max Frequency (point B):* it is the maximum frequency to which the > motor can work. It can correspond with the base frequency or it can be > higher depending on the bearing type and on the balancing grade. > - *Auto tuning functions:* to avoid any damaging of the motor we > suggest not to use the auto tuning functions of your inverter but manually > set up the inverter parameters with a linear [V/F] curve. > > *Warning:* please refer to the inverter manufacturer manual to correctly > install the inverter. > As Belli Button pointed out. Alex On Wed, Nov 26, 2014 at 5:09 PM, Belli Button <[email protected]> wrote: > I think the spindle manufacturers expressly forbid auto tune. Try setting > the inverter to 400Hz, this indicates to the inverter that it is a low > inductance motor and will be able to control the current better, remember > to > set both base frequency and max frequency. > > > -----Original Message----- > From: alex chiosso [mailto:[email protected]] > Sent: 26 November 2014 17:40 > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] VFD trouble > > This VFD has also a Auto tune function , did you tried it ? > > Alex > > On Wed, Nov 26, 2014 at 4:34 PM, alex chiosso <[email protected]> wrote: > > > Hi Viesturs. > > How did you connect the motor phases (on the motor terminal blocks) > > star or triangle ? > > The motor seems to be a 2 poles (12000rpm at 200Hz) and the phase > > voltage is 220VAC so you should connect the motor phases to "star" type > isn't it ? > > Are you driving the speed reference with an analog input or via a > > digital input o via the VFD keypad ? > > Are you sure that you're giving the right reference value to the VFD ? > > > > Alex > > > > > > On Wed, Nov 26, 2014 at 4:19 PM, <[email protected]> wrote: > > > >> The VFD manufacturers have white papers specifically covering driving > >> multiple motors from one larger VFD so it's absolutely a supported > >> configuration. You need separate overcurrent protection for each > >> connected motor though since the VFD's OCP can't work to protect an > >> individual motor in such a configuration. > >> > >> > >> ------Original Mail------ > >> From: "Ron Ginger" <[email protected]> > >> To: <[email protected]> > >> Sent: Wed, 26 Nov 2014 07:38:27 -0500 > >> Subject: Re: [Emc-users] VFD trouble > >> > >> Are you trying to run 2 motors wired in parallel to one VFD? I dont > >> think that will work. Their rotors will never be in phase so any > >> feedback generated is going to be really strange to the VFD. > >> > >> ron ginger > >> > >> On 11/25/2014 10:30 PM, [email protected] wrote: > >> >>I need to drive 2 high-speed spindle motors, 3,7 kW each. For that > >> >>I have 11 kW VFD. > >> > >> > >> > >> --------------------------------------------------------------------- > >> --------- Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT > >> Server from Actuate! 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Instantly Supercharge Your Business Reports and Dashboards with > Interactivity, Sharing, Native Excel Exports, App Integration & more Get > technology previously reserved for billion-dollar corporations, FREE > > http://pubads.g.doubleclick.net/gampad/clk?id=157005751&iu=/4140/ostg.clktrk > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > ------------------------------------------------------------------------------ > Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server > from Actuate! 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