Why the spindle of the CNC machining center does not rotate

The spindle of the CNC machining center has direct connection and belt transmission. The spindles of these two transmission modes will have the phenomenon that the spindle does not rotate. The spindle of the belt transmission type machining center does not rotate. What should I do? Take a look:

① Caused by a mechanical transmission failure of the CNC machining center: First, check whether the belt drive of the machining center spindle is broken.

②Check the lack of phase or reverse phase of the three-phase power supply to the spindle of the machining center: check the power supply and exchange any two power lines.

③The circuit connection of the CNC machining center is incorrect: carefully refer to the circuit connection manual to ensure that the connection is correct.

④The CNC machining center system has no corresponding spindle control signal output: use a multimeter to measure the system signal output terminal. If there is no spindle control signal output, you need to replace the relevant IC components or send it to the factory for repair.

⑤The CNC machining center system has corresponding spindle control signal output, but the power supply circuit and control signal output circuit are open or the components are damaged: use a multimeter to check the power supply circuit and signal control circuit between the CNC machining center system and the spindle motor Whether there is open circuit; whether there is open circuit; whether the contacts between the wires are in poor contact; whether the AC contactor and DC relay are damaged; check whether the thermal relay is over-current; check whether the fuse is burned, etc.