| 摘要 |
PURPOSE:To keep riding comfortability by adjusting the deviation of a load correction value due to the change of lapse of hours. CONSTITUTION:This elevator speed control device reckons backward a load then existing in a car from a motor torque instruction value outputted from a torque generation section 5, referring to data in a torque memory section 3 storing a relationship between the magnitude of a motor torque instruction value at the time of elevator installation and adjustment, and a load in the car. Then the speed control device compares a detected load value and a load value reckoned backward with a car load inverse operation section 14, and makes judgement as to whether a difference involves a deviation equal to or above the prescribed value. According to this construction, even when a proper load correction value at the time of elevator installation deviates from an actual value due to the change of lapse of hours, the occurrence of more deviation than required, if any, is reported, thereby requesting an elevator service person to readjust a correction value for a load in the car before the extreme worsening of comfortability. |
