The basis for judging the failure of the electrical control system is the elevator control principle.
Therefore, to quickly eliminate the fault, you must master the circuit schematic diagram of the regional control system, and figure out the working principle of the elevator from orientation, start, acceleration, full speed operation, station forecast, speed change, leveling, switch door and other aspects. The mutual control relationship between each electrical component, the function of each electrical component, the relay/contactor and its contacts, and the like.
Before judging the elevator electrical control failure, it is necessary to thoroughly understand the fault phenomenon, in order to quickly and accurately analyze the cause of the fault and find the fault point according to the fault phenomenon of the circuit diagram.
