US 12,436,193 B2
Monitoring device, monitoring system, and monitoring method for relay output signal
Yuuki Kurokawa, Yamanashi (JP)
Assigned to FANUC CORPORATION, Yamanashi (JP)
Appl. No. 18/276,801
Filed by FANUC CORPORATION, Yamanashi (JP)
PCT Filed Apr. 13, 2021, PCT No. PCT/JP2021/015287
§ 371(c)(1), (2) Date Aug. 10, 2023,
PCT Pub. No. WO2022/219708, PCT Pub. Date Oct. 20, 2022.
Prior Publication US 2024/0125852 A1, Apr. 18, 2024
Int. Cl. G01R 31/327 (2006.01)
CPC G01R 31/3278 (2013.01) 8 Claims
OG exemplary drawing
 
1. A monitoring device comprising:
an output signal monitoring unit that monitors an abnormality in a number of times of repetition of opening and closing of an output signal of a relay; and
a cause identifying unit that, when the output signal monitoring unit detects the abnormality in the number of times of repetition of the opening and closing, identifies a cause of the abnormality based on a periodicity of the repetition of the opening and closing.