Hello fellow LCNC users; I am seeking advice of the collective hive mind on the best course of action for a machine build I have been slowly working on. Note also I am not in a rush to finish, I prefer to take as long as is needed to get it right the first time as I loath having to do things over again.
The base iron will be a modified Seig X3. Spindle motor is an ABB M2VA80B-4 3GVA082002-BSB The data plate states its a 3ph IP55 IEC 34-1 with the following wiring options. V 380-420 Y or 220-240 Delta @50Hz 1400rpm 0.75kW 2.3 / 4A V 440-480 Y or 250-280 Delta @60Hz 1680rpm 0.90kW 2.2 / 3.3A First thought was to get a decent sensorless vector 1.5kW VFD fed from my 220V 1ph line. I planned to underdrive the spindle 1.5:1 to provide decent torque, then over speed the motor to 6000rpm providing a max spindle rpm of 4000rpm. Other than a fly cutter the largest tool the machine is expected to use is 1/2". I am on rural power, and I have my own transformer feeding my property. I do have a rotary phase converter which feeds my Hurco KM3P knee mill, but I'm hoping to wire in VFD's so I won't need to run the rotary - feeding a 10hp motor to just sit there and generate the phantom leg is taking a big bite out of my wallet. My rate is $0.128/kWh. A while back there was mention of using a voltage doubler which output DC and feeding that directly into the VFD. I am now wondering if this might be a better way using a lower current 460V VFD to drive the spindle motor. What say you. ------------------------------------------------------------------------------ CenturyLink Cloud: The Leader in Enterprise Cloud Services. Learn Why More Businesses Are Choosing CenturyLink Cloud For Critical Workloads, Development Environments & Everything In Between. Get a Quote or Start a Free Trial Today. http://pubads.g.doubleclick.net/gampad/clk?id=119420431&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
