Hi everyone. We have a late 80’s vmc 4020 that has had its brains updated to the early 2000’s cpu and axis cards.
We fried our cpu a few months back and ordered a new one. After installing the new cpu and loading up our previous settings - the machine worked great..... for about 30 minutes. Even if I load a simple program that fits in the machines memory it will freeze at random points during the tool path. Sometimes it will freeze for 2 seconds. Sometimes for 15 minutes and then carry on like nothing happens. If you try to adjust anything or hit any buttons when it is frozen it is completely un responsive to key input. Except for emergency stop and coolant on and off.
We sent the cpu back having thought it was the culprit. Having installed the new one we have the exact same problem. We often don’t even have the ability to load a program now as the screen just cycles (hit the jog key to reset emergency stop) over and over until we are forced to shut the machine down.
Any suggestions? We’ve spent thousands to get this machine back up and with no luck!
Help!