Digital modular microprocessor based electrical contactor system

Details Digital modular microprocessor based electrical contactor system Digital modular microprocessor based electrical contactor system

1992-08-21

1996-04-09

Cabeca, John W.

Electricity: motive power systems

Positional servo systems

Digital or numerical systems

3649265, 3649269, 364DIG2, G05B 1929

Patent

active

055064850

ABSTRACT:
A controller incorporating a push button station controls a plurality of electrical contactors in a modular multicontactor system using three-wire serial data links. All information exchange is initiated and controlled by the controller using a simple four-byte protocol which places very little burden on the contactors. The controller can also communicate with and receive commands from devices on a network through an interface using the same four-byte message protocol, but with the interface acting as the master and the controller as the slave. When used in a reversing and two-speed motor controller configuration, the controller manages sequencing of the contactors, including delays, and passes thermal image data between contactors.

REFERENCES:
patent: 4389606 (1983-06-01), Detering
patent: 4819118 (1989-04-01), Mueller et al.
patent: 4893102 (1990-01-01), Bauer
patent: 4896288 (1990-01-01), Gonnering et al.

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