| 摘要 |
PURPOSE:To improve the comfortableness to ride by storing the cage load signal detected at the time of an elevator start in a nonvolatile memory when the commercial power is normal and using the memory value for activation compensation during the emergency operation at the time of power outage. CONSTITUTION:When the emergency operation is to be performed at the time of power outage, the voltage wave-form of an inverter INV2 generating the three-phase AC power source from an emergency battery BAT is a distorted wave-form with fixed 50Hz, thus a ferroresonance type power unit ES for a load detector LD can not be excited. The output from the load detector LD is stored in the nonvolatile memory of a control device CONT when the commercial power 1 is alive, and the stored value of the load detector LD is used to perform the activation compensation during the emergency operation at the time of power outage. Since the load detected value before the power outage is stored, the light load direction at the time of the emergency operation can be judged. The comfortableness to ride of an elevator at the time of the emergency operation can be improved. |
