Multiplex motor control system with automatic motor deactivation

Details Multiplex motor control system with automatic motor deactivation Multiplex motor control system with automatic motor deactivation

1987-12-08

1989-06-13

Shoop, Jr., William M.

Electricity: motive power systems

Positional servo systems

Digital or numerical systems

318565, 318562, G05B 1929

Patent

active

048395722

ABSTRACT:
A motor control system includes a motor, a switch which generates a motor activation signal, a motor power source, and a multiplex system. The multiplex system includes a central controller and remote stations coupled to the switch, and to control activation of the motor. The control means controls the second remote station to activate the motor in response to the appearance of the first signal and to deactivate the motor in response to the disappearance of the first signal. The control means also automatically controls the second remote station to deactivate the motor in the event the first signal persists for a time period longer than a motor activation threshold time, thereby automatically preventing excessively long periods of motor activation.

REFERENCES:
patent: 3973256 (1976-08-01), Stoesser
patent: 4293947 (1981-10-01), Brittain
patent: 4510426 (1985-04-01), Michaels et al.
patent: 4682168 (1987-07-01), Chang et al.

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