Back to results
US 7,119,514 B2Granted
Inverter
AssigneeOMRON Corporation
InventorsHiroshi Shimizu, Junichi Ueno, Kimikazu Kubo, Takashi Asai, Masakazu Komatsu, Yasuyuki Tagano, Toshiyuki Ozaki
Life of this patent
Estimating the term…
Abstract
An inverter has a measuring part that measures an operating time such as the time interval from when a command to start a specified operation by an associated system until a signal indicating the completion of the operation is received. A comparing part compares this measured operating time with a threshold value stored in a memory and an abnormal condition is reported to a host system, depending on the result of the comparison.
Claims8
An inverter comprising:
- a main circuit part that converts DC power to AC power;
- a communication part that communicates with an external apparatus through a network;
- and
- a control circuit part that controls conversion by said main circuit part and transmits condition data representing current conditions related to said inverter to said external apparatus through said communication part;
- wherein said control circuit part includes:
- a measuring part that measures an operating time of a system associated with said inverter based on a detection output from an external sensor;
- a memory that stores a threshold value related to said operating time;
- and
- a comparing part that compares a measured operating time measured by said measuring part with said threshold value, said condition data including a result of comparison by said comparing part.
6 more elements
Dependencies are inferred from the claim text.