ronan
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- 11,399
Interesting. lol I was told I would have to rewire all the switch gear if I ran 240 volts 3 phase anyway. I have decided to try a static converter to see if I can get away without any rewiring.. So I am getting a 40 amp supply from my fuse board to the garage where it will then go to the converter and from there to the lathe. I have a colchester master 2500 square shape with 5hp Motor that has dual windings 240and 415. I think (and hope my only problem might be the suds pump) BUt even then if I have read things correctly if I only run it when the main motor is running it should be fine)
Basically racer all the original colchester lathe wiring becomes redundant, or did do in my case. The mains power supply goes directly into the vfd inverter, the output from the inverter must go directly to the motor, this is always the case with inverters , nothing between the vfd and motor allowed. I initially used the control pad on the vfd to control the lathe, but as someone has said leaning over a machine like a lathe can be dangerous, especially if something has gone wrong.
There is a line of about 30 tiny connections on the yaskawa vfd i have, its a really simple job to run a wire from the green start button, the red stop button and a common back to connect to these vfd connections, the original buttons can then be used to start and stop the motor, and it would be easy to add a 10k ohm pot to be able to adjust the speed of the motor. These wires only carry a signal voltage and aren't dangerous.