Electrical control apparatus

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Details

364140, 364146, G05B 1101, G05B 1136

Patent

active

045147981

ABSTRACT:
Disclosed is a control apparatus having an indicator and a control which are used to display and change two different types of parameters in two modes of operation of the apparatus. The apparatus includes a control panel and a movable panel which can be moved to alternately overlay and expose at least a portion of the control panel. Switch means are provided to condition the apparatus to operate in a first mode in which the indicator displays a first type of parameter and the control selects or adjusts the value of the first parameter while the apparatus is automatically prevented from operating in a second mode of operation. The switch means further conditions the apparatus to operate in the second mode in which the indicator displays a second type of parameter and the control selects or adjusts the value of the second parameter while the apparatus is automatically prevented from operating in the first mode.

REFERENCES:
patent: 2777024 (1957-01-01), West
patent: 3655926 (1972-04-01), Meermans
patent: 4004113 (1977-01-01), Ericson et al.
patent: 4180860 (1979-12-01), Driscoll et al.
patent: 4189765 (1980-02-01), Kotalik et al.
Operator/Process Communication and Monitoring with the Teleperm M System; Bussmann et al., Siemans Power Engineering, (1979), No. 8, pp. 257-260.
"Displays and Annunciators Acquire Color and Intelligence to Keep Pace with Electronic Control", Timothy Miller, Control Engineering, Oct. 1981, pp. 111-114.
Barber Colman Company instruction manual, dated Sep. 1979 for "1253 IN 100-3 560 Series Microprocessor Controller For Process Heating Applications".

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