Ran last Friday for about 6 hours straight and threw an overload alarm. Sub spindle rotation was a bit stiffer than normal, and chuck very warm. Motor was very hot. Let it sit all weekend and all seemed fine Monday morning. This Mazatrol program uses the sub just as a bar puller and both spindles are linked at start up. We always need to unlink before running after startup. I could hear the slight singing of the windings like normal. I put some rotational pressure on the sub and it started twitching about 25 degrees back and forth. Bad cable? Guessing that was what caused it to overheat and shut down. 1998 machine I think.
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