Method for operating an automation field device

US12271179B2 · kind B2 · utility

Assignee

• Endress+Hauser SE+Co. KG · DE

Inventors

• Florian Asal · Aitern, DE
• Simon Gerwig · Schopfheim, DE
• Eric Schmitt · Sussex, US
• Wolfgang Trunzer · Lörrach, DE
• Martin Link · Merdingen, DE
• Markus Bothur · Wittlingen, DE

Key dates

• Filing date: Jun 18, 2020
• Grant date: Apr 8, 2025
• Expiry date: May 24, 2042

Classification

• Technology area (CPC G): Physics
• CPC primary: G05B2219/31229
• WIPO field: Control
• WIPO sector: Instruments

Abstract

A method for operating an automation field device comprises connecting a two-conductor line with an input terminal of the field device; setting a minimum electrical current value at the input terminal of the field device in an initializing phase; measuring a maximum voltage value at the input terminal in the initializing phase; ascertaining a minimum supplemental power supplied to the field device at the input terminal and which is available to the field device for performing at least one supplemental functionality; and activating/switching on a supplemental module by the processing unit when the ascertained minimum supplemental power is greater than or equal to an operating power needed for operating the supplemental module, wherein by the activating/switching on of the supplemental module a corresponding supplemental functionality is performed by the field device in measurement operation.