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    • 10. 发明申请
    • ELECTRIC ACTUATOR AND MODULE FOR SUPPLYING POWER DURING A POWER FAILURE
    • 在电源故障期间供电的电动执行器和模块
    • US20110215748A1
    • 2011-09-08
    • US12968491
    • 2010-12-15
    • Makoto SaruwatariHiroaki Narita
    • Makoto SaruwatariHiroaki Narita
    • H02P1/18
    • G05B23/00H02P1/18Y10T307/625
    • An electric actuator is provided having the same configuration whether used as an ordinary electric actuator or as an electric actuator having an emergency shutoff function. A portion for supplying power during a power failure, a power failure detection circuit, and a motor power supply switching circuit are provided in a module detachably coupled to the electric actuator. When failure of primary power is not detected, the power is sent to the electric actuator by the motor power supply switching circuit. When failure of the primary power is detected, secondary power is sent to the electric actuator by the motor power supply switching circuit. In addition, notification of the power failure is sent from the module to the control board of the electric actuator, via a relay connector. After being notified of the power failure, the control board reads a specified aperture during a power failure from a memory, and drives the motor with secondary power from the module as the energy source, thereby setting the aperture of the valve to the aperture during a power failure.
    • 提供具有与用作普通电动致动器或具有紧急关闭功能的电致动器相同的构造的电致动器。 在电动执行器可拆卸地连接的模块中设置有在断电期间供电的部分,断电检测电路和电动机电源切换电路。 当未检测到主电源故障时,通过电机电源切换电路将电力发送到电动执行机构。 当检测到主电源故障时,二次电源由电动机电源切换电路发送到电动执行机构。 另外,通过中继连接器将电源故障的通知从模块发送到电动执行器的控制板。 在通知电源故障之后,控制板从存储器发生电源故障时读取指定的光圈,并将来自模块的次级电源的电动机作为能量源驱动,从而在一段时间内将阀的孔径设置为孔径 电源(检测)失败。