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General Mach Discussion / Constant Torque vs. Varaible Torque VFD
« on: June 01, 2019, 09:45:07 AM »
I have a vertical knee mill with a 3hp 3-phase motor that I would like to power with a VFD, using mach 3 for speed control. It is a 4 pole, 1725 RPM, 8.9 amp unit.
Would I need a constant torque VFD, or a variable torque VFD for this application? What is the difference?
Would the motor lose any power by using a VFD vs. using a rotary phase converter?
Would I need a constant torque VFD, or a variable torque VFD for this application? What is the difference?
Would the motor lose any power by using a VFD vs. using a rotary phase converter?