Input or output device, for programmable automatic controllers to detect an electrical fault of the channels
US5583731A · kind A · utility
4Cited by
9References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 3, 1992 |
| Grant date | Dec 10, 1996 |
| Priority date | — |
| Expiry date | Sep 3, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/14048
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A device is adapted to be associated with a group of input or output channels, especially of a programmable automatic controller, to detect if the channels are subject to an open circuit and/or an overcurrent. To each channel are assigned two analog comparators connected to a processor logic circuit which connects one or the other comparator output to a control unit. Configurator logic activates or deactivates one or the other of the comparators and associated forcing devices and filters according to the operating mode selected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.