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Hitachi Computer Control (US patent: 4350225[1]) was a traction elevator model made by Hitachi.

Overview

Hitachi Computer Control elevator was the first computerized traction elevator system of Hitachi introduced in 1982[2]. These elevators doesn't use mechanical relays, instead, they use either Direct Current Silicon Controlled Rectifier (DC-SCR, for high-rise only) or Alternating Current Variable Voltage (AC-VV, for low-rise or mid-rise only) microcomputer controllers. Not much known about these elevators. They were produced until around mid 1990s when they were replaced with the Alternating Current Variable Voltage Variable Frequency/AC-VVVF model.

Notable installations

Main article: List of notable Hitachi Computer Control elevator installations

Trivia

  • Most elevators installed in the mid 1980s, except those installed in the early 1990s have the name "Computer Control" on the car floor indicator above the landing doors.
  • Most elevators installed from the mid 1980s to the early 1990s have floor indicators with flashing red LED lamp when the car moves.
  • Another similar elevator system like this was also manufactured by Toshiba in the mid 1980s[3].

Gallery

Videos

Old Hitachi Traction Elevator at Ginza Plaza 58, Tokyo01:43

Old Hitachi Traction Elevator at Ginza Plaza 58, Tokyo

Mid 1980s Hitachi Computer Control elevator found in Ginza Plaza 58, Tokyo, Japan.

西環堅尼地城厚威閣日立升降機01:58

西環堅尼地城厚威閣日立升降機

Mid 1980s Hitachi Computer Control elevator found in Hong Kong which are using electronic floor indicator

Hitachi Traction Elevator Narai Hotel01:21

Hitachi Traction Elevator Narai Hotel

Early 1990s Hitachi Computer Control elevator found in Narai Hotel, Bangkok, Thailand (video: Ta Garavigo).

Notes and references

External links

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