Hello! I need to drive 2 high-speed spindle motors, 3,7 kW each. For that I have 11 kW VFD. The problem is that I attached motors to the drive, tried to run them, but VFD does not increase frequency above 8-9 hertz (all the default frequency values are 50 hertz, I checked them and set to 100 to make sure that it not a problem). And in addition to that motors get really hot in a minute or so. I set "no load current" to 0,2 A, max current currently is set to 17 A (max current for each motor is 8,7A).
This VFD worked fine few weeks ago with 7 kW motor. I checked the motors today with 2kW VFD - worked just fine. Ok, I can decrease max current to 2-3 amps, while testing, probably that should fix the overheating, but why does it not allow to increase frequency? I would appreciate also any additional advices on how to run 2 motors with 1 VFD. Viesturs ------------------------------------------------------------------------------ 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 Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
