Photoelectric auxiliary switch for electromagnetic contactor
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United States of America Patent
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-
May 25, 1999
Grant Date -
N/A
app pub date -
May 6, 1997
filing date -
May 6, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Photoelectric reflective object sensors are mounted in an exteriorly mounted auxiliary switch case to detect a member on a movable contact assembly of the contactor to produce logic level output signals indicative of the operational state of the contactor electromagnet. One or a pair of photoelectric sensors are used in a side mounted auxiliary switch to detect the contactor movable contact assembly in the energized or de-energized position, or en route between the two positions. A single photoelectric sensor is used in a top adder auxiliary switch to detect if the movable contact assembly is or is not in the extended (de-energized) position. The auxiliary switches provided logic level output signals directly usable with microprocessor based controllers.
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