Electric power consumption control system
First Claim
1. An electric power consumption control system for a facility in which a plurality of industrial machines each causing a motor to rotationally drive are installed, whereinonly one of the industrial machines includes controlling means for controlling at least one of a rotational acceleration/deceleration speed Pi and a rotational speed Si of the motor of the one industrial machine, on the basis of information on an electric power consumption Wt of the facility, in such a way that the electric power consumption Wt becomes equal to or less than a specified value We, andthe electric power consumption control system comprises electric power monitoring means for obtaining the electric power consumption Wt of the facility by measuring each of electric power consumptions of all of the industrial machines installed in the facility and for providing the information on the electric power consumption Wt to the controlling means of the industrial machine including the controlling means.
1 Assignment
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Accused Products
Abstract
Disclosed is an electric power consumption control system for a factory where a plurality of machine tools (Mi, Mp1, Mp2) are installed. A machine tool (Mi) is provided with a control device (10) whereby either the rotational acceleration/deceleration (Pi) for the motor for the machine tool and/or the rotational speed (Si) thereof is controlled on the basis of information regarding electric power consumption (Wt) in the factory so that electric power consumption will not exceed a specified value (We). This electric power consumption control system is also provided with electric power detection instruments (11, 12, 13) and an electric power monitoring instrument (20) which measure the electric power consumption of all the machine tools installed in the factory, thereby obtaining the electric power consumption of the factory, and provide information regarding the electric power consumption to the control device of the machine tool equipped with the control device.
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Citations
8 Claims
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1. An electric power consumption control system for a facility in which a plurality of industrial machines each causing a motor to rotationally drive are installed, wherein
only one of the industrial machines includes controlling means for controlling at least one of a rotational acceleration/deceleration speed Pi and a rotational speed Si of the motor of the one industrial machine, on the basis of information on an electric power consumption Wt of the facility, in such a way that the electric power consumption Wt becomes equal to or less than a specified value We, and the electric power consumption control system comprises electric power monitoring means for obtaining the electric power consumption Wt of the facility by measuring each of electric power consumptions of all of the industrial machines installed in the facility and for providing the information on the electric power consumption Wt to the controlling means of the industrial machine including the controlling means.
Specification