Hey Aaron,
[RATTMMOTOR spindle/vfd kit for $289]
If you should really buy this (which I can in no case recommend), don’t try to fit a cable into the “aviation connector” but please buy a ready-to-use spindle cable at PwnCNC here (Daniel @PwnCNC will tell you which connector to select when ordering). This will lower the chances to get electrocuted or set your shop in fire a little bit. See here for more information.
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In the description of this spindle kit, you are told to only connect U,V,W terminals of the spindle, and omitting the PE wire. There is also a Ben Myers video on youtube where he does exactly that. DON’T EVER DO THIS! NEVER CONNECT A SPINDLE WITHOUT A PE WIRE! |
If you buy a cheap Chinese spindle, you should also be sure that inside the spindle, the PE (fourth) pin of the spindle socket is actually connected internally to the spindle housing, as can be seen here. If there is no such connection, all your safety is void and you could get electrocuted when there is an internal cable error and you touch the spindle. You can check this with a multimeter (set to ohms/resistance, the resistance between the PE wire and the housing of the spindle must be close to zero).
Usually you don’t buy a quality CNC machine and pair it with a cheap chinese spindle/VFD crap. That is not logical.