How to solve the problem of no display on the screen after the CNC rebar bending center is powered on?

1. There is no display on the screen after power-on. This is a common equipment failure. The reasons and troubleshooting methods are: first check whether the external voltage is a three-phase four-wire system (that is, three-phase 380V live wire plus neutral wire), and then check Check whether the wire from the external power supply to the control cabinet is open, whether the pressure line is pressed tightly, whether each switch is open or not; check whether the switching power supply is input 220V and output DC 24V.

2. The platform does not walk and does not return to the reference. At this time, we need to check whether the motor is running normally, whether the connection between the reducer and the motor is loose, whether the gear and rack are bitten; we also need to check whether the tightening of the platform has been loosened, and if it is displayed in red, it is loosened; If no problem is found in the above checks, it is necessary to check whether the parameters of the driver are input correctly, and at the same time observe whether the corresponding driver displays an alarm code. , check whether the wiring is blocked or loose; use the elimination method to determine the fault points of the driver, servo motor, encoder wire and main wire one by one.

In order to avoid problems during the use of CNC bending machines and affect the normal work efficiency, everyone should do a good job in its daily maintenance and maintenance, which can effectively avoid the occurrence of failures.