Passenger Elevator Provides Safety in High-rise Buildings

Diamond HS is a passenger elevator that offers passenger safety and comfort.
Diamond HS is a passenger elevator that offers passenger safety and comfort.

Mitsubishi Electric U.S. Inc. Elevator & Escalator Division has introduced Diamond HS, a passenger elevator for high-rise buildings. Designed to offer service while addressing passenger safety and comfort, Diamond HS elevators include technology systems that keep pace with growing demands for energy efficiency and sustainability.

Some features of the Diamond HS line are:

  • The world’s highest level of efficiency and power factor for traction machines
  • Quiet brakes as a result of noise-reduction technology New sfleX-rope for super high-rise rope mechanics to reduce rope stretching
  • An optional active roller guide that reduces vibrations and provides more comfort for passengers

Diamond HS elevators are equipped with Sigma AI-2200C or Sigma AI-22 group control systems (?AI-22 and ?AI-2200C). These systems utilize artificial intelligence to apportion passengers to cars according to factors such as waiting time, travel time, current car occupancy, energy consumption and building size. Diamond HS elevators are also available with an optional destination-oriented allocation system (DOAS) that can reduce average waiting times by up to 30 percent. Passengers use hall-operating panels to select their destination floor before boarding the elevator, allowing the supervisory controller’s algorithm to determine the best car to serve that floor. Dispersing passengers by destination eliminates the need for passengers to press a button within the car, reduces the number of potential stops that a car will make, minimizes wait and travel times for all users and reduces energy consumption.

To promote sustainability, Diamond HS elevators use a permanent magnet gearless traction machine, which produces a magnetic field due to high-density, high-precision winding of the joint-lapped cores built into the machine’s motor, reducing energy usage and CO2 emissions.

Diamond HS are equipped with intelligent door systems to promote safety and reliable door operation. As sensors detect conditions including variations in door loads between floors, wind strength within elevator shafts and sediment in the door tracks, the data is analyzed by a Reduced Instruction Set Computer (RISC) so that the elevator can adjust the speed at which doors open and close and modify torque to reduce the likelihood of a door-related failure. Control of AC motor speed and torque is provided by variable-voltage, variable-frequency (VVVF) inverters that enable Diamond HS elevators to vary voltage and AC motor input frequency as required. Additionally, Mitsubishi Electric offers a door operator design that is unique to the industry, where the door operator mechanism is structurally isolated from the elevator cab, minimizing noise and vibration transmission into the cab, and further stabilizing door operation.

The brake system incorporated into the Diamond HS elevators’ traction machines employs a double-brake configuration to stop elevators securely. An additional high-resolution motor encoder maintains landing precision and affirms that passengers feel safe stepping across the threshold to board and disembark and feel comfortable during their ride. If the sensors detect a passenger or object over the track, the doors will immediately stop closing and then fully reopen.

Emergency features include standard earthquake and fire emergency operations, as well as emergency car lighting, automatic emergency power source operation, a remote supervisory panel, and MelEye, a control system from Mitsubishi Electric.

In addition to safe and efficient passenger movement, rider comfort is key in the design and configuration of Diamond HS elevators. Leading-edge control systems and devices work with skilled installation technology to assure that even high-speed rides are smooth and quiet throughout their duration. An added focus on alignment ensures that cars are correctly positioned at floors as the doors open.

For more information about Diamond HS elevators, and the complete line of Mitsubishi Electric elevators and escalators, visit the website.

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