| 摘要 |
PROBLEM TO BE SOLVED: To provide an elevator control system that is capable of unburdening an adjusting person of troublesome calculations and adjustments. SOLUTION: An elevator control system permits the highest-loaded operation of an elevator to thereby detect the maximum current value of an inverter device 14 for driving an alternating electric motor 12 with current sensors 16 and 17, which value is held in a microcomputer 1A. The microcomputer 1A automatically sets an overcurrent-detection set value MTOC- SET for the inverter 14 from the maximum current valve on the basis of a preset calculating formula. If a comparator 1F finds an absolute value-added value signal IMT of a three-phase current exceeding MTOC- SET, the control of a PWM gate array 1H is suspended to stop controlling the inverter 14. |
