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    • 10. 发明申请
    • TWO-WIRE FIELD DEVICE FOR PROCESS AUTOMATION TECHNOLOGY FOR CONNECTING AT LEAST ONE SENSOR ELEMENT
    • 两目现场设备用于过程自动化技术用于连接至少一个传感器元件
    • WO2008074609A2
    • 2008-06-26
    • PCT/EP2007063066
    • 2007-11-30
    • ENDRESS & HAUSER WETZER GMBHJOEGEL THOMASKONRAD STEPHANUMKEHRER ALFRED
    • JOEGEL THOMASKONRAD STEPHANUMKEHRER ALFRED
    • G05B19/0423G05B2219/25012G05B2219/25014G05B2219/25428G05B2219/25462
    • A two-wire field device for process automation technology for connecting at least one sensor element comprises a first supply part V1, which can be connected to a field bus FB via a first two-wire connection A1. The field device FB is completely supplied with energy via the field bus. The two-wire field device comprises a second supply part V2, which is connected to the first supply part V1 and serves the energy supply of a sensor bus SB via a second two-wire connection A2. Furthermore, a field bus communication unit FKE, which is connected to the first two-wire connection A1 and the first supply part V1 and which serves the data exchange via the field bus, and a sensor bus communication unit SKE, which is connected to the second two-wire connection A2 and the second supply part V2 and which serves the data exchange via the sensor bus, are provided. A processing module VM is connected to the field bus communication unit FKS, the sensor bus communication unit SKE, and the first supply part V1. According to the invention, the field bus FB and the sensor bus SB are galvanically isolated from one another.
    • 用于过程自动化工程的两线式的现场设备,用于连接至少一个传感器元件包括一个第一供应单元V1,其经由第一2线连接A1与现场总线FB可连接。 关于现场总线现场设备FB是完全断电。 双线现场装置具有第二供给部V2被连接到第一供给部V1并且用于在第二2线连接A2用于向传感器总线SB供电。 此外,Feldbuskommunikationseinheit FKE,其被连接到第一2线连接A1和第一电源V1连接部和通过现场总线用于交换数据,和一个Sensorbuskommunikationseinheit SKE,A2和第二与第二2线连接 供应单元V2连接,并用于通过被设置在传感器总线交换数据。 与Feldbuskommunikationseinheit FSK,所述Sensorbuskommunikationseinheit SKE和第一电源部V1的处理模块VM连接。 根据本发明的现场总线FB和传感器总线SB彼此电隔离。