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    • 1. 发明授权
    • Automation technology autarkic field device
    • 自动化技术自动化现场设备
    • US09442477B2
    • 2016-09-13
    • US12451934
    • 2009-10-09
    • Christian SeilerDirk Rapp
    • Christian SeilerDirk Rapp
    • G05F1/10G05B19/042
    • G05B19/0423G05B2219/25006G05B2219/25198G05B2219/25282G05B2219/25428
    • An automation technology, autarkic, field device, which is connected via two connecting terminals to an I/O module. The I/O module is embodied as a 4-20 mA/HART I/O module. The I/O module is associated with a controllable energy source via which the field device is supplied with energy. An electrical current measuring unit is provided which ascertains the electrical current supplied by the energy source. In the I/O module, internal resistors are provided, across which occurs in each case a voltage drop dependent on the flowing electrical current. A control unit is provided, which operates the energy source in such a way that a predetermined terminal voltage is supplied on the connecting terminals for powering the field device.
    • 自动化技术,自给自足的现场设备,通过两个连接终端连接到I / O模块。 I / O模块体现为4-20 mA / HART I / O模块。 I / O模块与可控能源相关联,通过该可控能源,现场设备被供应能量。 提供一种电流测量单元,其确定由能量源提供的电流。 在I / O模块中,提供了内部电阻,在每种情况下都会产生取决于流动电流的电压降。 提供一种控制单元,其以这样的方式操作能量源,使得在连接端子上提供预定的端子电压以为现场设备供电。