公开(公告)号：US20160072278A1

公开(公告)日：2016-03-10

申请号：US14782646

申请日：2014-02-17

Applicant: ENDRESS+HAUSER FLOWTEC AG

Inventor： Daniel Kollmer ,  Matthias Brudermann ,  Frank Bonschab ,  Heinz Muller ,  Nikolai Fink

IPC: H02H9/02

CPC classification number: H02H9/02 ,  H02H9/008 ,  H04L12/40 ,  H04L25/0266 ,  H04L2012/4026

Abstract: A field device comprising a protection circuit between a communication interface and a signal processing unit. A communication interface is preferably an Ethernet connection of the field device, wherein between the communication interface and the signal processing unit a first system is provided, which serves for electrical current limiting, wherein between the first system for electrical current limiting and the signal processing unit a means is provided, which serves for voltage limiting, and wherein between the means for voltage limiting and the signal processing unit a second system is provided, which serves for energy limiting.

Abstract translation: 一种现场设备，包括通信接口和信号处理单元之间的保护电路。 通信接口优选地是现场设备的以太网连接，其中在通信接口和信号处理单元之间提供用于电流限制的第一系统，其中在第一电流限制系统和信号处理单元之间 提供了用于电压限制的装置，并且其中在用于电压限制的装置和信号处理单元之间提供了用于能量限制的第二系统。