Application: Lathe
Present motor: 220V, 60kW, 3000 rpm driven by 6RA70 SIEMENS DC-DC Converter.
Mode: Armature speed control with constant shunt excitation.
Point-1: Gearbox is intact
Now it is proposed to replace DC motor with AC motor, 60 KW, 2 Pole, 50 HZ driven by VFD. Is this okay?
My understanding is if a 60kW, 3000 rpm motor performs the task then 60kW, 2980 rpm AC motor run by VFD should work well. Please note that I am not changing gearbox.
Expert comments are awaited.
Present motor: 220V, 60kW, 3000 rpm driven by 6RA70 SIEMENS DC-DC Converter.
Mode: Armature speed control with constant shunt excitation.
Point-1: Gearbox is intact
Now it is proposed to replace DC motor with AC motor, 60 KW, 2 Pole, 50 HZ driven by VFD. Is this okay?
My understanding is if a 60kW, 3000 rpm motor performs the task then 60kW, 2980 rpm AC motor run by VFD should work well. Please note that I am not changing gearbox.
Expert comments are awaited.