Pumps – Condition responsive control of pump drive motor – Plural pumps having separate drive motors – supply sources,...
Patent
1986-08-08
1987-11-10
Freeh, William L.
Pumps
Condition responsive control of pump drive motor
Plural pumps having separate drive motors, supply sources,...
417 63, 137392, F04B 4902, F04B 4906
Patent
active
047054565
ABSTRACT:
An easily viewed control panel structure indicating the status of and controlling the operation of a water, wastewater or process liquid pumping station where the pumping equipment is operated automatically with respect to a varying liquid level or pressure, liquid level is sensed over a calibrated range, the sensed level information is sent to a controller as a proportional signal, the value of the level of pressure information is displayed on a multi-element, vertically-oriented light-emitting diode bar graph display with each element representing a uniform increment of the total level or pressure range, a circuit-connecting programming pin is inserted in each of several vertically positioned receptacles of the control panel with each such insertion at each horizontal level representing a segment of the level display bar graph, with each receptacle representing a turn-ON or turn-OFF capability of the controller and with two such receptacle circuits combining to provide differential level automatic control of a pump or alarm circuit, an automatic arrangement transposes the starting sequence of multiple pumps or successive operations, a level simulation switch provides a false rising or lowering level for test purposes, and an audible alarm and visual signal alerts an operator to the occurrence of an abnormal level condition.
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Consolidated Electric Co.
Freeh William L.
Gregory Leo
LandOfFree
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