ChatDiagram
Logic gates · Elevator control · Safety interlock

Elevator door and motion interlock logic

This elevator door and motion interlock diagram turns a few basic operating conditions into two outputs. RUNENABLE requires a car call, closed and locked doors, no overload, normal inspection status, and a condition away from a floor. DOOROPENENABLE allows an opening command only when the car is at a floor and the same inhibit conditions are clear.

Type Schéma de portes logiquesNorme IEEE Std 91/91a-1991Moteur schematex-logicMis à jour 22/09/2026
Door and motion interlock
Drawing preview
La demande

“Draw gate-level elevator interlock logic with car call, door closed, door locked, overload, inspection mode, and at-floor inputs, producing RUN_ENABLE and DOOR_OPEN_ENABLE outputs.”

Essayez ensuiteAdd a door obstruction input.Add a maintenance lockout input.
Ce que contient ce dessin

Comprenez les décisions qui le sous-tendent.

01

Both closed and locked door signals are required for movement.

02

Overload and inspection mode inhibit normal operation.

03

An at-floor signal prevents a normal run command.

04

Door opening requires the car to be at a floor and not overloaded.

Use this for a digital logic or controls exercise. Actual elevator safety chains use redundant, monitored, safety-rated circuits beyond this conceptual gate diagram.

Voir tous les modèles de schéma de portes logiques →

FAQ

Questions fréquentes

Why need both door closed and locked?

They represent distinct conditions; a closed door is not necessarily mechanically locked.

What does inspection mode do?

It inhibits normal automatic motion in this simplified model.

Is overload normally a gate input?

An overload condition commonly prevents normal operation, though implementation is equipment-specific.