Controller of industrial machine

Abstract

Abstract PURPOSE:To suppress the temperature rise of a motor by controlling the motor by the compared result of the difference value between the measured value of the rotating speed of the motor and the command value with the value added with the command value and the threshold value. CONSTITUTION:A counter 22 adds the difference between the pulse number of a pulse generator 20 and the pulse number of a directional discriminator 21, and the counted result of the counter 22 is converted by a D/A converter 23 to a voltage signal Vd. A servo amplifier 26 compares a voltage signal Vd with the speed signal of a speed detector 8b to control a motor 8. On the other hand, a pulse signal PC from a pulse generator 20 is converted by a f/V converter 30 to a voltage signal Vc, an adder 31 adds a reference voltage signal VR2 and the voltage signal Vc, and outputs a voltage signal VR3. When the voltage signal Vd becomes equal to the signal VR3, a comparator 25 outputs a significant signal to abruptly stop the motor 8.

Inventors

• 👤 Makoto Kondo
• 👤 誠 近藤

Bibliographic Details