This is a low hour machine (Heidenhain TNC 2500 Control)that had been in storage for awhile. I have been working on it for several months. I finally got everything working and on my second program I found that the spindle is dropping out if I try to run above around 1200 RPM. It tries to start and then stops, the machine will continue on as if it is running. There is a small square reset button on the board that kicks out. I don't know if that means anything. I have read that these don't have a great reputation. When I got the machine and started it for the first time, a resistor burned up on the MTI-1 board, I got that repaired and I had programmed spindle speeds above 1200 since then. Is there any tuning or troubleshooting that can be done? Anyone have any documentation?
Thanks for any help.
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