Otis Elevator Company

Ingo Engelhard

Peter L Herkel

Ralph S Stripling

Burkhard Braasch

Frank M Sansevero

Andreas Stuffel

Uwe Hauer

Dirk Heinrich Tegtmeier

Bernward Engelke

Marvin Dehmlow

Dietmar Thaler

Michael Wilke

Helmut Lothar Schroeder-Brumloop

Ruediger Loeb

Andreas Tutat

Frank Kirchhoff

Peter Von Riegen

Markus Müller

Olaf Märker

Carsten Deseniss

A device and method for automatically adjusting safety control parameters of a conveyor are disclosed. The safety device may include various sensors and a safety control module. The safety control module may be preprogrammed with a learn-run method configured to learn operational and mechanical characteristics of a conveyor, validate the operational characteristics of the conveyor based on predefined nominal specifications, and determine a safety function with calibrated safety control parameters by which to monitor conveyor operation.

Automatic adjustment of parameters for safety device

A device and method for detecting a misaligned or missing step of a conveyor are disclosed. The missing step detector includes various sensors for detecting the drive speed of the conveyor and for detecting the presence of pallets or steps. The sensor output signals are correlated to determine fixed values characteristic of the specific conveyor in question. Using the fixed values as reference, the missing step detector is able to effectively monitor the conveyor for misaligned or missing steps independent of conveyor speed and time.

Signal correlation for missing step detection in conveyors

An elevator system and associated method includes power control for operating an elevator () in an emergency mode wherein the elevator () includes a car (), a drive motor (), a motor drive unit () which supplies power to the drive motor () and controls the same and an emergency power supply (). The motor drive unit () has a predetermined normal operation switching frequency. In an emergency mode, power is supplied to the motor from the emergency power supply () while the motor drive unit is in an emergency mode. An actual emergency operation condition characteristic is determined for setting the switching frequency of the motor drive unit () dependent on the actual emergency operation condition characteristic.

Elevator system and associated method including power control for operating an elevator in an emergency mode

People mover () comprising an endless tread belt () formed from several tread elements () connected to one another, which is driven by a drive unit about a first and second reversal point (), and a side skirt () moved along with tread belt (), the side skirt () comprising flange elements () joined to the tread element () and bridge elements () connected movably relative to flange elements (). A sensor () is arranged adjacent to the side skirt (), the sensor () having a limited detection range perpendicular to the circulation direction of side skirt (), and a plurality of marking elements are arranged in a line on side skirt () along the circulating direction having a limited width perpendicular to the circulating direction.

Safety monitoring system for a people conveyor

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Berlin, Germany

Ingo Engelhard