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Earthquake emergency return (EER)

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Earthquake emergency return (EER) (or Earthquake Operation) is an elevator special mode. In this mode, upon activation of primary and/or secondary wave seismic sensors, all cars stop at the nearest floor, and park there with the doors open to facilitate the safe evacuation of passengers. The elevator controller shall be designed according to applicable code requirements for this mode.[1]

The earthquake emergency return mode was first introduced by Hitachi on January 25, 2007.[2] Since then, this mode was featured in most Japanese brands, and also some other brands.

Gallery

References

  1. Seismic requirements for elevators, escalators and moving walks
  2. Hitachi introduces elevator with earthquake control operation system

External link

Sigma Elevator Generic "The protection wrap in this elevator has not yet been removed."
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Elevator Special Modes 

Anti-Crime Protection (ACP)Attendant service (AS)Earthquake emergency return (EER)Emergency power operation (EPR) • Fire service mode (EFS) (Fireman's elevator) • Independent service (ISC) • Inspection service (INS) • Medical emergency/Code Blue service (EHS)Nudge mode • Peak times modes (Up peak (MIT) • Down peak) • Pet modeSabbath service (SHO)


See Also: List of Elevator and Escalator Brands • Elevator Fixtures Guide


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