| 摘要 |
PURPOSE:To miniaturize a storage battery and prevent the damage of the storage battery as an emergency power source by detecting the regenerative voltage level with a regenerative voltage detecting circuit at the time of the power stoppage/rescue operation, and performing a regenerating action with a regenerative energy absorbing circuit. CONSTITUTION:In the rescue operation at the time of a power stoppage, a power stoppage detecting contactor 25 is excited, a normally opened contact 20 is closed, and a normally closed contact 21 is opened. When an elevator is set to the regenerative mode under this condition, the constant of the resistance value R1 of a voltage dividing resistor 18 is properly set, thus the Zener voltage is set to the proper voltage not to damage an inverter device 17 and a storage battery 7 as the condition that a Zener diode 23 is turned on. During the rescue operation by an emergency power source, when the regenerative voltage is detected, a regenerative action can be performed with a regenerating circuit constituted of the transistor 14 of a main control device 1, a regenerative resistor 15 and a diode 16. |
