Elevator Adjustable Resistor

• The function of elevator resistors

In the elevator, the resistor is mainly used to control the operation of the motor. When the elevator motor starts, the starting current of the motor is very large, which is easy to bring safety hazards to the elevator. The role of the resistor is to reduce the starting current to protect the elevator operation stability and safety. The resistor can also control the speed of the motor, so that the elevator runs according to the specified speed.

•  Type of elevator resistorS

There are two types of elevator resistors, one is the starting resistor and the other is the braking resistor. Starting resistor is to act when the motor starts, and its function is to reduce the current when the motor starts; while braking resistor is to act when the motor brakes, and its function is to convert the kinetic energy of the elevator into heat to dissipate, so as to achieve the purpose of braking.

• Structure of the elevator resistor

Elevator resistor structure is divided into fixed resistance, adjustable resistance and electronic resistance. Fixed resistance refers to the size of the resistance is fixed non-adjustable, applicable to small elevators. Adjustable resistance can be manually adjusted or automatically adjusted by the circuit, applicable to large elevators. Electronic resistance is the use of semiconductor technology, more superior performance, higher stability, but the price is also higher.

• Application of elevator resistors

In the elevator start-up process, the resistor by gradually reducing the resistance value of the motor, so that the motor start-up current gradually increased to achieve the purpose of a smooth start. In the process of elevator operation, the resistor makes the elevator speed stable by controlling the resistance value of the motor. During the braking process of the elevator, the resistor converts the kinetic energy of the elevator into thermal energy and decelerates until it stops.

In summary, elevator resistors are mainly used to control the speed of the elevator and protect the motor to ensure stable and safe elevator operation. At the same time, in elevator operation, the resistor can also achieve smooth starting and slow braking of the elevator to achieve better user experience and safety.