Output control and protection device, in particular for programmable automatic controllers
US5432945A · kind A · utility
3Cited by
12References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 3, 1992 |
| Grant date | Jul 11, 1995 |
| Priority date | — |
| Expiry date | Sep 3, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B19/058
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A device for controlling and protecting outputs against overcurrents, in particular for programmable automatic controllers, comprises for each output channel a protection circuit connected by a single terminal to a power switch and to its control circuit. In the protection circuit a comparator compares with a threshold a voltage imaging the current in the output channel and disabling means are connected to a circuit for forcing the comparator input voltage. A common terminal is therefore used to monitor and to disable the output channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.