Industrielles Sicherheitssystem mit Einzelleitungskommunikation und Diagnosekommunikation einer Sicherheitsvorrichtung

Details

Veröffentlichungs-Nr.

EP3260936

Aktenzeichen

EP17176561

Anmeldetag

19. Juni 2017

Veröffentlichung

12. Januar 2022

Erteilung

12. Januar 2022

Rechtsraum

EP

IPC

G05B19/042

Abstract

A single-wire safety system architecture is provided that yields reliable safety device monitoring without the need for dual redundant signal channels. The safety system comprises a safety relay acting as a communications master device and one or more compatible safety devices connected in series with the safety relay via a single-wire communication circuit. The safety device farthest from the safety relay on the safety circuit modulates a safety signal with a recognizable pulse pattern that traverses the single-wire safety circuit to the safety relay via the intermediate safety devices. The safety relay maintains safety mode as long as the pulse pattern is received and recognized. The architecture allows bi-directional communication of initialization, configuration, and diagnostic messages over the single-wire safety channel, and can also allow safety devices to insert prognostic data into the safety signal in order to convey health information while the system is in normal operation mode.

Anmelder

Firma

Rockwell Automation Technologies, Inc.

Land

🇺🇸 USA

Fachgebiete