Adjusting technique for a digital elevator drive system

US5157228A · kind A · utility

Assignee

• OTIS ELEVATOR COMPANY · US

Inventors

• Bernd Ackermann · Aachen, DE
• Peter Herkel · Berlin, DE
• Herbert K. Horbruegger · Berlin, DE
• Mustapha Toutaoui · Berlin, DE

Key dates

• Filing date: Sep 28, 1990
• Grant date: Oct 20, 1992
• Expiry date: Sep 28, 2010

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B66B19/007
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

Automatic and manual adjustment of a new elevator system installation is accomplished by means of a service tool for interacting with software resident in the elevator system whereby various control parameters such as the feed forward gain of the drive system, the start time delay for delaying initiation of a start torque profile for bypassing the velocity loop during starting, the polarity of the feedback signals, e.g., armature current, velocity, motor field current, and other parameters, may be adjusted automatically, while others, such as the impedance of an elevator brake, may be adjusted by a technician responding to automatic prompts.