Digital valve and pump control system

Details Digital valve and pump control system Digital valve and pump control system

1976-03-01

1978-03-07

Schaefer, Robert K.

Electricity: motive power systems

Positional servo systems

Time-sharing or multiplexing systems

340163, 340185, 361191, 340183, G08C 1506, G05B 1132

Patent

active

040781968

ABSTRACT:
A control unit is connected, via a data bus, to a plurality of remote field controllers, each of which is in turn connected to a motor starter and status contacts of a respective valve or pump. Binary codes are communicated between the control unit and field controllers to convey status information, regarding a valve or pump, to the control unit. Likewise, command codes are conveyed from the control unit to a pump or valve to effect a selected operation.

REFERENCES:
patent: 2635200 (1953-04-01), Berry
patent: 2659838 (1953-11-01), Rocher
patent: 3641530 (1972-02-01), Schoenwitz
patent: 3793636 (1974-02-01), Clark et al.

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