Hi All,
I am new here and to cnc machines.
I have just purchased a CNCEST 6040 machine, USB version.
I have put it together and it seems to be working OK, except for the spindle, which can be control by both manually and mach3, but it turns very slow, and when I try to up the speed it stops, and gives an error message of E U what that means I have not got a clue.
It is a 1.5 kw spindle water cooled.
I would appreciate it if someone can put me on the right track. Thanks.

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