Passenger elevator(passenger lift)

Guangri Passenger elevator Reasonably combining the drive control system and logical control system, the integrated control system demonstrates the modern design concepts of high efficiency and high integration rate and creates a new elevator control system. The main control panel of the integrated control system is comprised of a high-performance 32-Bit SCM of MOTOROLA and a double-signal processor of TI. There are four CPU which monitor each other and are able to detect various unreasonable situations and take protecting actions with the help of adequate detection logic software. The reliable reset circuit can ensure that there will be no mistakes in output even when hardware of the system go out of order. AMP plug-ins with high reliability are used to ensure the reliability of signals of long running contacts; multi-computer network control is applied to ensure the quick response of control signals in terms of hardware and to improve the control preciseness of the system; it can continue to keep high running reliability of Guangri Elevator with two control systems at the speed control loop and the running control loop, which monitor each other. Through the distributed execution of the double control system, it can be realized to improve the running reliability of elevators. There is a unique and perfect failure diagnosis system to detect failures and record in the system for maintenance;The technology of PMSM gearless tractionGreenMax series of elevators are driven by self-developed rare-earth PMSM gearless tractors which boasts low loss, high efficiency, simple structure, reliable function, small size and light weight.Rather than being fettered by traditional ways of thinking, it uses neodymium ferroboron materials that still have high performance of remanence at high temperature in the design of PMSM electric motors featuring low rotate speed, large torque and high preciseness to replace traditional screw gearing technology. It designs the tractor wheel and brake wheel on the same axle and design direct installation of them on the end of the shaft of electric motor to avoid out-of-control dangers caused by broken axles of electric motors and the snaggletooth of positive speed gearbox, dangers that traditional worm-gear main engines have, and greatly reduce the lost energy caused by mechanical friction.The technology of PM demagnetization prevention is utilized in PMSM electric motor to avoid the problems of PM demagnetization caused by strong instant moment and increase of electric motor temperature.The brake system of strong moment tractor is used to directly brake the tractor wheel of the elevator to enable quicker response and greater safety and reliability so that the braking capacity of the whole elevator system reaches 170% dead-load.Intellectualized network managementThe call and display system in the car and outside the hall is controlled by local computers.