| 摘要 |
PURPOSE:To prevent service from being lowered by operating an elevator continuously without stopping it immediately even if either one of oil temperature sensors comes out of order, in a hydraulic elevator controlled by means of multiple oil temperature sensors. CONSTITUTION:Data from other normal oil temperature sensors are substituted for those from a faulty oil temperature sensor. A data switching-over sensor is, therefore, provided to continue operating an elevator temporarily, thus preventing servicing from lowering. |
