The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 15, 2013
Filed:
Jun. 25, 2010
Kenji Fujita, Tokyo, JP;
Ikuya Sato, Tokyo, JP;
Hiroshi Takahashi, Tokyo, JP;
Yuichi Takami, Mie, JP;
Kenji Fujita, Tokyo, JP;
Ikuya Sato, Tokyo, JP;
Hiroshi Takahashi, Tokyo, JP;
Yuichi Takami, Mie, JP;
Fuji Electric Co., Ltd., Kawasaki-Shi, JP;
Abstract
Whether a safety function unit having a safety function of a desired standard is correctly mounted in a safety device having a configuration in which a basic control function and safety function are separated is accurately determined. The safety device includes a controller and the safety function unit. The controller is provided with a unit which selects a category for identifying a safety function unit which should be connected, a unit which transmits a reference signal to the safety function unit, a unit which determined, based on a category identification signal returned from the safety function unit, whether or not the category of the connected safety function unit coincides with a selected category, and a unit which, in the event that the result of the determination is such that the category of the connected safety function unit and the selected category do not coincide, prohibits the output of a control signal. The safety function unit is provided with a unit which, based on the reference signal transmitted from the controller, generates the category identification signal in accordance with a process appropriate to the category of the safety function unit, and returns it to the controller.