Apparatus for electronic monitoring of the supply current of modules connected to a bus
US6590755B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 2000 |
| Grant date | Jul 8, 2003 |
| Priority date | — |
| Expiry date | May 22, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/28
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The invention relates to an apparatus for electronic monitoring of the supply current of modules connected to a bus, in particular for monitoring the supply current of bus devices of an automation bus system.The object of the invention is to provide an apparatus for electronic monitoring of the supply current of modules connected to a bus, which on the one hand, if required, carries out reliable isolation from the supply voltage, and simultaneously maintains the diagnostics capability for the purpose of fault locating.The invention achieves this by virtue of the fact that the apparatus has at least one device for detecting and at least one device for limiting and/or disconnecting the supply current.In this case, the device for disconnecting the supply current responds to the value of the detected supply current, it being ensured thereby that the energy supply for other modules of the automation bus, which are connected in parallel with reference to the supply voltage, does not fail, as a result of which at least a limited operation of the system is maintained, and thus fault diagnosis also remains possible.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.