CENTRALIZED CONTROL DEVICE FOR GROUP OF VIBRATOR DRIVE MOTORS Russian patent published in 2003 - IPC

FIELD: electrical engineering. SUBSTANCE: device designed to afford sequential centralized control of group of motors driving centrifugal vibrators which are used for removing loose materials being recovered when they are stuck to walls of hoppers and to ensure sequential circular cycling operation of vibrators at preset number of on- and off-operations of respective vibrator motors during each cycle, each motor being held in onor off-state for definite time period, has push-button switch, magnetic starter, first electromechanical relay, regulated power unit, first and second optical triacs, clear pulse shaper, pulse generator, first pulse counter, first binary-decimal decoder, and single-pole multiposition selector switch; newly introduced in device are N second electromechanical relays according to number of electric motors, N 1 magnetic starters, N 1 second optical triacs, second pulse counter, second binary-decimal decoder, N NAND gates, OR gate, AND gate, and NOT gate. EFFECT: facilitated control of vibrator motors; reduced manufacturing cost and maintenance charges of device. 1 cl, 1 dwg