The basic principle.
A normal journey starts with a destination and suitable operating conditions. Doors close, their required conditions are established, and the control system prepares the movement sequence.
The drive or hydraulic control builds motion according to the requested profile. Position information helps the controller determine the approach to the destination. Short runs may have no full-speed cruise.
The last part of the journey.
Speed reduces for approach, the car reaches the intended stopping position, and holding and door-opening functions follow their designed sequence.
Follow the relationship.
- PrepareConfirm conditions and coordinate the start.
- TravelControl speed and track position.
- ArriveStop, hold and operate doors as permitted.
Connect it to the lift.
An installation’s exact sequence depends on its technology and design. A delay at departure, a rough ride and an inaccurate stop occur at different points in the chain and therefore call for different evidence.
A closer look
Journey timing combines door time, starting, acceleration, travel and stopping. Increasing maximum speed alone may have little effect on a short trip.
Check your understanding
Does every journey include a long constant-speed section?
Reveal the explanation
No. On short journeys the lift may need to slow down before reaching its usual travel speed.