Acceleration measurement results obtained from K6CM-VBM Unit 1 Unit 2 Unit1 Acceleration measurement results obtained from K6CM-VBM Fan system Before maintenance Measurement value under normal operation 0.25G After maintenance Measurement value under normal operation 0.11G Unit2 Acceleration measurement results obtained from K6CM-VBM Before maintenance After maintenance Measurement value under warning operation 0.44G Measurement value under normal operation 0.08G Regularly replace pulleys, bearings, belts, etc.
(G) Threshold warning After overhauling Before overhauling After overhauling Before overhauling After overhauling Before overhauling After overhauling Before overhauling Ч10 4 Shaft diameter D [mm] X Rotation speed N [rpm] Note: Bearing anomalies can be detected earlier by vibration than by comprehensive current diagnosis. Load anomalies that cause bearing anomalies, however, are better detected using comprehensive current diagnosis. Alarm threshold acceleration for this application (examples) Detects degradation of bearings so users can replace them before Expected implementation effects they lock up.
13 10.00 1.00 0.10 0.01 0 2 4 6 8 10 12 14 16 18 20 Alarm threshold (Warning) 0.32G Alarm threshold (Critical) 1.35G