Rockwell Automation Technologies Incorporated

Jon P Vanderpas

Robert H Schmidt

Joachim Thomsen

Arun K Guru

Jonathan D Hoffman

Gerry M Nagel

Shankernarayan Ramanarayanan

Aderiano M Da Silva

Chetan Chandrasekara

Kevin J Riederer

James C Sandell

Vincent Bourrelly

A method and system for communication between a motor controller and an analytic module includes a Single Pair Ethernet interface with power supplied over the two data lines. The analytic module, in turn, connects to a motor or other devices proximate the motor. The analytic module receives input signals from the motor or different types of sensors or devices. A processing unit in the analytic module may perform some initial processing on the incoming data. The processing unit is configured to transmit either the raw input signals or processed data via the Single Pair Ethernet connection back to the motor controller or to other controllers in the system with the motor controller acting solely as a pass-through gateway. The analytic module unit may be configured to transmit data at different update rates. One of the update rates may be synchronized to an update period in the motor controller.

Method and apparatus for communication between analytic modules and a motor drive

A system and method for real-time detection of anomalies in a motor drive includes a controller receiving one or more signals corresponding to real-time operation of a controlled system. The controller samples the real-time signal during operation of the controlled system and maintains a moving window of the sampled data. A signature of the sampled data within the moving window is then generated. Each signature corresponds to operation of the controlled system within the period of time defined by the moving window. An identifier and a number of occurrences of each signature may be stored with the signature. An initial table of expected signatures may be generated, for example, by executing a training, or learning, period within the control system. The controller compares each real-time signature against the table of expected signatures to detect the occurrence of an anomaly.

Method and system for real-time anomaly detection in a motor drive

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Appleton, WI, United States of America

Jon P Vanderpas