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:
May. 17, 2022
Filed:
Nov. 18, 2020
Applicant:
Abb Schweiz Ag, Baden, CH;
Inventor:
Toni Kuikka, Helsinki, FI;
Assignee:
ABB Schweiz AG, Baden, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 11/07 (2006.01); G06F 11/30 (2006.01); H04L 9/32 (2006.01);
U.S. Cl.
CPC ...
G06F 11/0757 (2013.01); G06F 11/302 (2013.01); H04L 9/3242 (2013.01); H04L 2209/38 (2013.01);
Abstract
According to an aspect, there is provided a functional safety, FS, watch-dog timer circuit for a computing device of a frequency converter controlling a motor. The FS watchdog timer circuit is configured to trigger a safe state of the frequency converter in response to a timer of the FS watchdog timer circuit expiring. Moreover, the FS watchdog timer circuit is configured to reset the time in response to receiving a first refresh signal from the computing device funning FS software using non-inverted logic as well as in response to receiving a second refresh signal from the computing device running the FS software using inverted logic.