Mitsubishi Electric elevator quality is constantly evolving, and our machine-room-less elevator provides technological advances that deliver a world-class ride.
Reduced Torque Ripple for a Comfortable, Smooth Ride
Our gearless traction machine with the new PM (permanent magnet) motor is packed with cutting-edge technology, such as our unique stator-core structure and built-in double brakes. This optimized motor design dramatically reduces the level of torque ripple for a smooth and quiet ride.
Ensuring that Quality Remains First Rate
Mitsubishi Electric elevators include features designed to reduce the need for maintenance -- such as double brakes built into the PM motor. Our highly trained service personnel continually ensure that our elevators run smoothly and safely. When maintenance or service is needed, equipment in the top of the hoistway is easily accessible from the maintenance platform on top of the elevator cage.
Advanced Door Controls
VVVF (Variable Voltage Variable Frequency) Inverter Control has been adopted to ensure smooth, quiet door operation, enhancing passenger safety and product reliability. Our innovative door operation system uses "one-chip RISC microcomputer" to detect variations in the door load, the strength of the wind and even sediment in the sill grooves, on each floor. It adjusts the door opening and closing speeds, as well as the door motor torque at each floor using the Auto Tuning function. The learning-capable Door Load Detector immediately reverses the doors when abnormal load is detected.
High-Speed Computer Processor
The high-accumulation LSI integrating digital control circuitry has significantly increased the speed of the computer processing, enabling precise control of the traction motor during acceleration and deceleration. This innovation delivers a quality ride with the least noise and vibration.
Innovative Technology Enhances Efficiency and Reliability
More technological advances, such as the high-accumulation LSI and low-noise PWM inverter, enable the VVVF inverter to deliver smooth, high-precision control of the traction machine. In addition, the IPU (Integrated Power Unit) acts as a high-efficiency power supply circuit for the motor drive and, along with the PM motor, delivers greater energy savings. The adoption of the low-noise IGBT with faster switching speeds also contributes to noise reduction. The slim control panel manages advanced technologies such as VVVF, PWM and IPU.
Freedom of Layout
Because the machine is installed within the hoistway, there are fewer restrictions on building design, giving architects and interior designers more freedom than ever before.
More Architectural Freedom
Architects, builders and interior designers will appreciate the design freedom that comes with a machine-room-less system. A machine room is no longer needed, as all machineries successfully fit into the hoistway, except the control panel, which can be placed anywhere within a 100 foot distance from the traction machine. Also, a conventional machine room elevator applies load stress on a building’s structure, whereas the guide rails of DIAMOND TRAC support as much as 75% of the stress for added building friendliness.
Machine Room Removed for Space Saving
The miniaturization of the traction machine, leading to the development of the gearless traction machine with PM motor, enables a hoistway to contain driving devices that are usually installed in a machine room. What’s more, the area of the hoistway is almost the same as our conventional elevator, for additional space saving. All you have to think about in your planning is a hoistway*.
*NEC 2003 Article 620-71 and ASME A17.1 2004 - A17.a-2005 Rule 2.7.6 stipulate that an elevator control panel must be installed outside the hoistway and thereby a separate room is required for control panels.
Miniaturized and Optimally Configured
Mitsubishi Electric has succeeded in miniaturizing key elevator equipment. Because a gearless traction machine with PM motor is installed in the hoistway, space normally required for separate machine rooms or penthouses becomes available. Equipment is configured for easy maintenance from car top, and the entire compact system is optimally organized for performance and service.