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Want to buy 1500W 6040

761 Views 3 Replies 4 Participants Last post by  old55
I'm looking at buying a no name 1500W 6040 (which looks like CNCEST 6040 sold in USA) and had a few questions about what exactly is in the control box and how to 'fix' it:
1. Are there separate VFD, Controller, PSU & Stepper drivers or is all integrated together?
2. What voltage / wattage is the power supply for stepper, 36V?
3. What brand is the VFD and are they reliable?

I'm very interested in this machine under the assumption the frame is reasonably solid (except maybe unsupported X axis and bed) and stepper motors, Spindle & VFD are reliable, its just the old control board and stepper drivers in which are in need of upgrading, I plan on replacing the control board with a GRBL MKS DLC32 and stepper drivers with DM542T. Are my assumptions about this machine correct? plan B would be to build a PrintNC from scratch but that's a far more time and cost intensive undertaking.

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Welcome to the forum.
1. I think VFD is usually separate from the Controller board and PSU. I believe the controller board has integrated 3/4 axis stepper motor drivers based on TB6600 Chips.
2. Very likely to be 350V-400W 24W ONLY.
3. VFD brand is probably Gozuk.

The Machine is built for MACH3. YOU will need to buy a legal copy. Those Chinese companies bundles a pirated copy of Mach 3 version 1.XX. You will need a legal Mach 3 version 3.62 or 3.66 to work properly.

(GRBL is usually only suitable for small NEMA 16 size stepper motors. There are already CHEAP engraving machines and 3D printers that comes bundled with GRBL controllers. WHY reinvent the wheel?).
Welcome to the forum @Optional Rigidity
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