System and method for detecting motor run condition
US7342371B2 · kind B2 · utility
8Cited by
19References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2004 |
| Grant date | Mar 11, 2008 |
| Priority date | — |
| Expiry date | Jan 17, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B1/405
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A motor control system for detecting motor run condition comprises power switches for connection to an AC line for controlling application of AC power to the motor. An input receives a motor start command. A controller is connected to the input and controls operation of the switches responsive to a motor start command. The controller includes a counter and a timer and is operable to disable the power switches if number of starts during a select interval exceeds a first threshold and to disable the power switches if motor run time after a motor start command exceeds a second threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.