| 摘要 |
PURPOSE:To enable to accurately set the speed of a slave side motor by adding a correcting constant value to the value multiplied by the speed ratio of the motor to a set frequency value. CONSTITUTION:A microcomputer 13 has a digital-to-analog converter 14 which produces as an output interface the frequency setting analog signals of inverters 9, 101, 10n, and performs a speed setting calculation by a CPU18. The constant correction value is added to the value multiplied by the speed ratio of the slave side motor to the frequency setting signal by this calculation. In this manner, the frequency of the inverter is set as the set speed of the motor, thereby readily setting accurately the speed of the motor. |
