1.Motor: This is the main component that drives the crane's mechanical parts (such as hooks, winches, pulleys, etc.). The motor is usually a three-phase asynchronous motor or a DC motor.
2.Controller: It is used to control the movement of the crane, including operations such as speed, direction and stopping. The controller is usually a programmable logic controller (PLC) that can accurately control the operation of the crane through a preset program.
3.Contactors and relays: These components are used to control the start, stop and reversing of the motor. Contactors use electromagnetic principles to connect or disconnect the circuit, while relays are used to control the switching of the circuit.
4.Frequency converter: It is used to adjust the speed of the motor and thus control the operating speed of the crane. The frequency converter achieves this function by changing the frequency of the power supply.
5.Limit switches: They are used to detect the position of the crane and prevent it from exceeding the predetermined working range. These switches automatically stop the crane's movement when it reaches the limit position.
6.Cables and slip rings: These components are used to transmit power and signals. Cables are usually used to supply power to fixed positions, while slip rings are used to transmit power to rotating parts.
7.Brakes: They are used to stop or slow down the crane when required. Brakes usually consist of electromagnetic brakes or hydraulic brakes.
8.Power supply system: including transformers, circuit breakers and fuses, etc., used to provide a stable power supply to the crane and protect the electrical system in case of failure.
9.Operation control device: such as remote control or operating console, which is used by the crane operator to control the crane.
These electrical components work together to ensure safe and reliable operation of the crane under various load conditions.
