ABB inverter repairs: If the ABB inverter fails, there will be a corresponding fault on the operator panel**. Generally, when dealing with inverter faults, it is necessary to find its fault** on the operation panel, and then conduct an in-depth analysis according to the fault**. The following discusses the handling methods of some common faults based on personal experience in repairing inverters and some common faults**.
Fault**: Brake flt
Cause of failure: brake failure, brake opening timeout or brake opening is not in place.
Solution: Open the cover of the brake on the spot, force the brake coil to be opened in the program, observe the limit opening state of the brake, and replace the brake if the brake cannot be opened or the mechanism is stuck;
If the limit opening distance is far from the limit induction piece, adjust the distance of the induction piece and ensure that it is tightened (according to the author's many years of equipment management experience, the failure rate of the electronic inductive proximity switch is much lower than that of the mechanical switch, and most of the important limits in this department are improved from the mechanical switch before installation to the electronic inductive proximity switch);
Fault**: MF Comm ERR
Cause: The communication between the master and slave buses is invalid.
Solution: Check the fiber connection between the master, slave bus connection, and master ch: to slave ch:. See if the connection is tight, and if it is loose, plug it back in and confirm that the connection is reliable. In addition, it is also necessary to check whether the optical fiber communication is normal and whether the optical fiber head is clean, etc., if it does not meet the requirements, it is necessary to clean or replace the optical fiber with a fine electronic instrument cleaning agent.
If the above conditions are normal or the fault cannot be eliminated, the fault can be eliminated by forcing the output coil of the inverter contactor to act for about 5min in the program.