I. Structural features The Passenger Elevator adopts current popular geared traction machine drive, VVVF control. Geared traction machine is mainly composed of worm gear reducer and variable frequency motor. It has the advantage characteristics of large load, broad speed range, convenient maintenance and etc. II. Advanced control system 1. Frequency converter adopts original imported special frequency converter for variable frequency motor. 2. Rotary encoder adopts imported high precision encoder matching with the frequency converter. 3. Control unit SANYO-E is full computer serial CAN bus communication control system. 4. This system adopts distributed control. 5. It adopts shaft-self-study, 6. Automatically form elevator travel curve, 7. Distributed cables completely adopt prefabricated plug-in connector that can shorten the installation interval. 8. It has the test functions of safety circuit, 9. Equip with special elevator data communication interface, 10. VVVF variable frequency toothing belt door machine