STEP Electric Corporation is a publicly traded company in China, founded in 1995. As an elevator control system product manufacturer in China, we offer a wide range of products, including servo drive, elevator inverter, elevator integrated drive and controller, general vector inverter, elevator main controller board, car controller board, and indicator board. STEP products are extensively used for the control and drive of elevators, escalators, harbor cranes, hoisting equipment, industrial fans, and water pumps, in industries such as power generation, mining, plastic and rubber processing, packaging, construction, etc. In addition to elevator control system, we also provide a wide variety of elevator parts for customers to choose from.
The AS160 frequency inverter is classified into fan inverter and water pump inverter according to its application. Our water pump inverter is a newly developed AC drive for industrial and civil use water pumps. It is flexible and convenient to use, and provides water supply system with multiple functions, like constant pressure water supply, and water pump switch functions, etc. Our fan inverter and water pump inverters are designed based on international advanced electrical motor control technology, so they offer superior motor control performance. In addition, we also make improvements on our fan inverter and water pump inverter according to market demand and its working environments, making our frequency inverter ideal for use on not only fans and water pumps, but also mixers and conveyors, etc.
AS320 elevator inverter is a kind of newly developed frequency inverter especially for elevators. It is designed with 32-bit MPU for motor driving, high performance complex programmable logic device (CPLD), and advanced power module. Meanwhile, the elevator inverter is designed based on international advanced closed loop vector control technology and supports various control modes including V/F control, sensorless vector control, and torque control modes. Integrating the characteristics of potential energy load, the elevator inverter allows elevators to operate efficiently, smoothly and steadily, and offers passengers a comfortable feeling.
While designing the AS380 elevator integrated drive and controller, a variety of factors, including elevators' safety and reliability, inherent characteristics of elevator operation, and potential energy load characteristic of elevators, are taken into consideration. Designed based on variable frequency speed regulation technology and elevator control technology, the elevator integrated drive and controller is an ideal combination of an elevator drive and an elevator controller. Its dual 32-bit embedded microprocessor unit allows it to complete both elevator operation and motor drive functions. The multiple elevator operation functions can satisfy customers' different application requirements.
AS500 general vector inverter is a newly developed frequency inverter designed to satisfy market demands. It is designed based on international advanced speed sensorless vector control technology, closed loop vector control and torque control technology. The vector inverter offers not only superior control performance as high end frequency inverters, but also improved reliability and environmental adaptability, as it is designed and manufactured to satisfy customers' varied application requirements and various industrial demands.
AS700 harbor crane 4-quadrant inverter comes with compact structure, and is equipped with an energy regenerative power supply unit which allows the energy generated during braking process to be fed back into the power grid. So, it is very energy saving and requires little installation space. Requiring no external braking resistor, the harbor crane 4-quadrant inverter is easy for installation.
AS800 high voltage inverter is an energy saving and environmental friendly IGBT variable frequency inverter designed based on international advanced electrical, electronic and vector control technologies. It offers superior motor control performance and great environmental adaptability, due to our efforts to make improvement on the high voltage inverter according to market demand. It is extensively used to control the speed of high voltage motors so as to achieve reduced energy consumption. The high voltage inverter has few requirements on electric motors and connection cables. So, an old machine can be controlled by the high voltage inverter without changing its electric motor.
The electric drive uses a MENTOR II DCVV speed regulator produced by British CT, and there is no need for electric generator set. By changing the voltage on the brush of the motor, the motor speed can be modulated. Hence, an elevator controlled by the DCVV control cabinet offers a comfortable feeling, improved operation efficiency and reduced energy consumption. The full serial DCVV control cabinet uses an absorption circuit and a DC reactor to greatly reduce the operation noise. Our control cabinet is suitable for different kinds of DC elevators.
1. Assembled with a full serial control system, our VVVF control cabinet is able to fulfill multiple humanized functions such as duplex control, group control, remote monitoring, emergency rescue, etc. 2. The excellent VVVF drive system assembled in our full serial VVVF operating box ensures higher stability of the elevator and offers a better elevator travelling experience to passengers. 3. CAN bus serial communication method greatly reduces the quantity of cable cores and saves the cost spent on wiring.