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! 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! 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! 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
