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Thread: New stand for lathe
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26th Nov 2020, 12:51 PM #16Golden Member
- Join Date
- Dec 2007
- Location
- Adelaide
- Posts
- 574
Motor is a plain Ebay sourced 2kw 1400rpm motor it is very slightly smaller than the original 1ph motor, has slightly different mounting hole spacings - I think I had to drill 2 new holes it can be wired for either 240 3ph or 415 3ph - not sure if you know about this - for 240v operation the windings are connected as a triangle/delta - each point/vertice of the triangle has a phase wire connected to it. For 415V operation the windings are connected as a star/wye - each point/vertice of the star/wye has a phase wire connected to it. If the motor rotates in the wrong direction then swap any two connections.
I've set the max frequency to 75Hz so motor max speed is approx 2100rpm, minium frequency is set to 12Hz. One thing I should have done and will probably get around to is to either add some protection around the VFD or mount it in a small cabinet - swarfe tends to find it's way into everything so there is a possibility a small bit will land in the top, of the VFD drop down into it and short something out - Murphy's law and all that.
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