It perfectly applies the optimum speed changing curve outputted by control system after precise calculation to the running of elevator, eliminating the discomfort during riding, and the speed change happens unwittingly during elevator’s starting-up, running and stopping. Powerful self-diagnostic function guarantees high efficiency and reliability. Sound interface makes commissioning and modification more convenient, which fully meets the changing requirements of building and passengers;

Gearless traction machine with external-rotor permanent magnet synchronous technology reduces the total energy consumption by 30% by decreasing the energy consumption of excitation current. Without mechanical deceleration device, it becomes more efficient with lower noise and avoids the environmental pollution caused by gear oil, namely a green environmental protection drive system.