Input/output methodology for control reliable interconnection of safety light curtains and other machine safety controls
US6778079B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 16, 2001 |
| Grant date | Aug 17, 2004 |
| Priority date | — |
| Expiry date | May 16, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16P3/12
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The present invention involves a methodology for the interconnection of safety control modules used for the safeguarding of personnel around points and areas of hazardous machine operation. The system includes one or more safety control modules connected together so that the safety control modules communicate with each other using actively diverse safety control signals. The safety control modules are also connected to the machine safety control circuit so that the safety control modules can stop machine operation when one or more safety control modules are activated. The use of actively diverse safety control signals provides a control reliable system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.