Electricity: motive power systems – Positional servo systems – With protective or reliability increasing features
Patent
1988-05-09
1990-03-27
Shoop, Jr., William M.
Electricity: motive power systems
Positional servo systems
With protective or reliability increasing features
G05B 902
Patent
active
049123823
ABSTRACT:
An apparatus for detecting and analyzing a fault condition occurring in an engine electrical generator set (21) while providing means for inhibiting the engine electrical generator set (21) upon the occurrence of the fault. The apparatus utilizes a run relay (22) connected in series with single contact fault senders (26) to a reference potential. The single contact fault senders (26) monitor various parameters of the engine electrical generator set (21). When a parameter is exceeded, the single contact fault sender (26) opens, de-energizing run relay (22) thereby inhibiting engine electrical generator set (21). Optical isolators (27) monitor the single contact fault senders (26) and provide information on their status to logic determining means (24) to alert an operator of an exceeded parameter. Also provided is a bypass switch (31) to bypass single contact fault senders (26).
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Onan Schematic, 1988.
Koenig David J.
Schultz Mark H.
Bergmann Saul M.
Onan Corporation
Shoop Jr. William M.
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