I have a Teco 7300 CV that I'm trying to get setup on my old Hurco KMB1 retrofit. I have spent a couple hours trying to find an answer and have not come up with anything.
Problem I'm having is the rpm of the motor is not matching what is displayed on the VFD.
The motor that I have is a GE and these are the specs:
2hp, 240V, 60hz, 3-phase, 1745 rpm
Below that there are two sets of specs at different frequencies,
90hz, 1.7hp, 240V, 4.6A, 2620rpm
and
26hz, 2hp, 200v,7.7A, 745rpm.
I'm not sure which settings to input in the VFD. I have tried the 90hz settings and the motor spins up fine and sounds good. When I check the vfd output at 90hz it says the spindle should be at 1800rpm. I'm sure that it is spinning faster then that. I buddy at work is suppose to bring in his tach so I can check the actual rpm.
I would think that the settings that the vfd is looking for are the 60hz specs. Only problem is there is not a current rating listed under that group of specs.
The old VFD was rated at 5HP which I thought was kind of weird since the motor says it's a 2hp motor. The 7300 CV is a 3HP unit.
I did do the auto-tune option on the drive after I had entered the 90hz specs.
Also the mill manual says that this mill had an rpm range of 150-3500. Both of those numbers are out of the range that is stamped on the motor. As best as I can tell the pulley for the spindle is a 1:1. I will have a better look at that tomorrow.
I have included a picture of the name plate on the motor. Sorry about the fuzz picture. Only had my cel phone with me.
http://www.ConceptCNC.com