1. "Inverter Drive" is the most advanced technology in elevator. The computerized Inverter Control Unit regulates voltage and frequency, leading to precise and reliable speed control.

2. As the Inverter Control simultaneously regulates both the voltage and frequency, a smooth, comfortable and quiet ride, either in acceleration or deceleration, can be achieved.

3. The Inverter Control can help minimize energy loss during acceleration and deceleration, hence reducing the power consumption by 50% when comparing with conventional elevator systems.

4. The Inverter Drive Control, high performance microcomputers, solid state components, fiber optics and digital control, all add to the quality, reliability and stability of Toshiba elevators, which are one of the safest and most efficient elevators in the market.

5. Computerized intelligence in the Inverter Control Unit and the terminals can enable the terminals to provide the central controllers with detailed operation data and act more appropriately to the current conditions, therefore creating a quick and accurate control of elevators.

6. Toshiba elevators employ digital control to ensure the highest levels of operational stability and reliability. For pinpoint accuracy and split-second efficiency, digital command signals are used in its principal operation functions.

7. Compared with the conventional parallel transmission which uses point-to-point wiring connections, serial transmission results in less wiring, and is more serviceable and easier to install.

8. The use of fiber optics results in a higher speed and clearer transmission of signal which is more accurate and reliable, as well as avoiding static noise and signal loss. Hence, more information can be transmitted reliably and only minimum cable space will be occupied.

9. With a high-efficiency traction machine and advanced inverter control, the Permanent Magnet Synchronous Motor (PMSM) Gearless Elevator greatly raises the value of the high-speed elevator.

(i) Concept and Energy Efficiency via Magnet Synchronous Motor
The PMSM Gearless Elevator employs a gearless traction machine using a permanent magnet synchronous motor (PMSM),in place of the conventional induction motor. The PMSM uses a permanent magnet with a high magnetic flux density. This allows the traction machine to be made smaller and lighter. Also, since a permanent magnetic flux is established, there is no need to release magnetizing current, thus allowing efficient control which helps save energy.

(ii) Digital control provides high level of safety and improves control performance
The PMSM Gearless Elevator's control system features the PP7, the latest inverter-control processor developed especially for power electronics. The PP7 improves control performance and enhances protection, maintenance, and monitoring functionality. Incorporating a 32-bit central processing unit (CPU), peripheral devices, and multi-functional digital circuit in a single package, the PP7 reduces the size of the control system. Toshiba's unique Active Vibration Control and other features also add to the speedy, comfortable ride with a waste-free and stable running.

10. Regenerative unit is installed into the power system to improve the efficiency of energy usage and control the temperature-rise in the machine room. For a 14 persons (1050kg) passenger elevator which is running at 105m/min, 12 hours per day for 25 days, the regenerative unit can reduce the energy usage up to 38% per year.