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Elevator systems

UPS for defined functions during a power failure

During a mains failure, a UPS can supply controls, door systems, communication or a planned evacuation trip. The required functions depend on the elevator, system concept and responsible planning.

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Controls and door systemsEmergency call and communicationEvacuation trip according to system design

Protection goal

What should the elevator still do during a power failure?

The answer determines power, battery, interfaces and integration. Sizing based only on motor power is not sufficient.

Stop in a defined way

Controls and required auxiliary loads are assessed for the intended behaviour.

Supply doors and communication

Door drives, emergency calls and other prioritised functions may have separate load and runtime requirements.

Enable an evacuation trip

Travel profile, direction, number of trips and timing across several elevators need to match the system concept.

For system sizing

Four points determine the right UPS

Elevator data

System type, controls, motor, power, voltage and available circuit documentation.

Operating goal

Reach a landing, open doors, maintain communication or perform defined trips.

Load profile

Starting behaviour, regeneration, auxiliary loads and staggered operation of multiple elevators.

Integration

Space, environment, bypass, signals, maintenance and project responsibilities.

System overview

The UPS within the elevator system

Mains supply, UPS, elevator functions and control signals need to be planned as one system.

  1. 01
    InputMains and protection
  2. 02
    Core systemUPS and battery
  3. 03
    LoadsControls, doors and communication
  4. 04
    CoordinationSignals and travel sequence
Project-specificCheck before sizing
  • Required function
  • Power and load profile
  • Trips and runtime
  • Installation and interfaces
Principle diagram. UPS sizing does not replace elevator planning, safety assessment or acceptance testing.

Our approach

From protection goal to a suitable solution

  1. 01

    Understand the application

    We clarify which loads must continue operating or shut down in a controlled manner.

  2. 02

    Determine power and runtime

    Load, reserve, required bridging time and installation conditions define the technical sizing.

  3. 03

    Plan for operation

    Monitoring, bypass, battery replacement and service are considered from the outset.

Next step

You do not need a finished specification

Tell us which loads are involved, where the UPS will be installed and what should happen during a power failure. Nameplates, photos or power data are helpful, but not required for the first enquiry.

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