Sir,
This alarm has to do with your spindle Hall effect sensor and your spindle pulley magnet. If the control doesn't read the Hall switch in 3 sec, then the control assumes the machine's spindle is not turning. Go into your DI/DS screen and see if the orientation sensor is making or turning to a one when the magnet and switch are in line. Clean the switch and make sure your switch is about .05" above the pulley. Clean your pulley. You will not see the change in the orientation bit by spinning the spindle. It doesn't process the signal fast enough to register when moving. You must identify the magnet in the pulley and line it up with the Hall switch and see if the orientation switch changes to a one.
If so, check your belts and make sure they are tight and not spinning on the motor pulley. If not, make sure your connectors in the head are clean and tight. Unplug them, clean and plug them back in. If still not working, replace the Hall switch. The part number is ELE-2064 and in stock at FadalCNC.com. Let me know how this turns out and I will continue to help until we nail it.
FadalCNC.com Tech Support