Crap chinese router problems

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It wouldn't surprise me if it is twisted as like some one said it is mostly cast, Its defiantly not something I would purchase and shows the need to have good reliable electronics. If it was mine it would be in bits already and replace a lot of it or start again but its not and I'm just trying to help as much as I can.

we have been in contact with the supplier however the only manual we can get for the inverter in in Chinese, were that English scanned copy came from I have no idea and I have spend a good few hours searching and emailing around.

If I were you (or the owner) I would take my losses and go elsewhere. Buy a Hitachi or Bosch, Allen Bradley, Schneider Electric or some other REAL brand. You have wasted so much time on this that it is unbelievable. If I were the buyer of that crap I would have complained, and claimed my money back or some serious compensation. Sending a manual in Chinese is totally unacceptable and a very arrogant gesture, it means that the supplier/manufacturer is totally unreliable and is an idiot. A new VFD is not the end of the world, I paid less than £200 including delivery from UK to Sweden and after reading all the horror stories about cheap VFDs I certainly don't regret that decision and would do that again.

I am sorry that I can't help you out with Chinese, perhaps there are some forum members who can, though I think that the likelihood of finding one is higher on CNC Zone. Did you try Google translate? It may take time to produce something readable, but it may not be impossible.

We have had anouther problem come up also now with the z axis going straight up to the top and hitting the home/limit switch as soon as you start any file, even ones that we have run before and this problem happened over night between turning it off and restarting it the next day so think the vfd may be the least of our worries.

This sounds like a problem with the setup or the code. Did you try Mach3? There is a free version which runs 200 (or something like that) lines of code and is fully usable for such tests.

Does the problem only happens when you run code, or also when jogging? Can you jog up and down without problems? Is it just one particular code or any code? Is the machine set to use inches and maybe the code is for millimetres?