General Electric Company

Lisa E Rosner

Karl D Pedersen

Veronica Kertesz

Karanam Rajaiah

Jonathan A Wolf

Mark Fredrick Culler

Bo Lundager Andersen

Joseph E Krisciunas

James Wallace Hamilton, Jr

Mark J Obermeier

Sara Simplot

David K Nanto

A communication bus containing master and slave devices includes a monitor unit for fault tolerant communications. In the event the master is unable to communicate, the monitor automatically assumes the master communication role. When more than one monitor is connected within the communications network, the monitor with the lowest communications address assumes the master communications role. The master includes software implementation that allows an operator to obtain data from any of the slave devices via the monitor.

Fault tolerant communication monitor for a master/slave system

An interface monitor is connected with a LAN that is formatted with an RS-485 protocol and which is interconnected with a plurality of electrical distribution devices. The monitor includes a socket connection for receiving an RS-232 plug from a PC and software logic for interpreting between the RS-232 and RS-485 formats. The PC is enabled for communicating with each one of the electrical distribution devices.

Interface monitor for communicating between different communication

Fault tolerant communication monitor

A motor controller unit of the type providing optimum motor operation and protection is configured to determine phase rotation correction during motor start-up without stopping and re-configuring. The effects of heat on the squirrel cage (amortisseur) and motor field windings are accurately and automatically determined on a continuing basis to deter nuisance trip occurrence during motor start and restart operations and to prevent damage to the motor windings during continuous motor operation, respectively.

Motor controller and protector unit

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East Windsor, CT, United States of America

Lisa E Rosner