Patent · US Active

Automation field device with auxiliary current input

US12379703B2 · kind B2 · utility

0Cited by

2References

9Claims

0Family size

Assignee

Endress+Hauser SE+Co. KG · DE

Inventors

Simon Gerwig · Schopfheim, DE
Christian Strittmatter · Geislehen, DE
Bernd Strütt · Steinen, DE

Key dates

Filing date	Apr 19, 2021
Grant date	Aug 5, 2025
Priority date	—
Expiry date	Apr 27, 2042

Classification

Technology area (CPC G)Physics
CPC primaryG05B2219/13015
WIPO fieldControl
WIPO sectorInstruments

Abstract

An automation field device comprises a first, a second, and a third connection pin; and a field device electronics designed to be operated either in a two-conductor mode or in a three-conductor mode. The field device electronics have an energy supply unit designed to provide internal energy supply exclusively by means of the fed current in the two-conductor mode. In the three-conductor mode, an additional auxiliary current is to be fed to the field device electronics via an additional single-wire line connected to the third connection pin, and the energy supply unit is also designed to provide the internal energy supply via the fed current and the fed additional auxiliary current. Furthermore, the field device electronics are designed to use the additionally fed auxiliary current for internal energy supply only if the current fed by means of the two-wire line is not sufficient for the internal energy supply.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.