K6CM Target Application Storage tank mixer Facility details Equipment for mixing storage tank content Motor operation conditions 0.4kW/200V/4 poles Direct connection to commercial power supply: 60Hz Failure mode Mixing blade not securely fixed in place Detection parameters Degradation level 1, 2 Degradation level 1,2 measurement results obtained from K6CM-CI2M Degradation level 1 measurement results Blade fixed Blade dropped Measurement value under warning operation: 36 Measurement value under abnormal operation: 42 45 Critical Degradation level 1: 42 40 35 Moving Average Stirring system 21 IV. Stirring system application Comprehensive current diagnosis type Times Degradation level 1:
36 Degra 30 Warning 25 0 1 2 3 4 Measurement time (minutes) Peaks observed at frequency bands indicative of axis deviations and eccentricities 0 -10 Blade fixed Degradation level 2: -20 34 -30 (dB) -40 Spectrum -50 -60 -70 -80 -90 -100 0 20 40 60 80 100 120 Frequency (Hz) 0 -10 Blade dropped Degradation level 2: -20 92 -30 (dB) -40 -50 Spectrum -60 -70 -80 -90 -100 0 20 40 60 80 100 120 Frequency (Hz) The dropping of the blade causes the center of gravity to shift, consequently exacerbating the effects of axial deviation and eccentricity 0 -10 Blade dropped Degradation level 2:
Alarm threshold degradation level 1,2 for this application (examples) -20 92 -30 (dB) -40 -50 Spectrum Example of degradation level 1 alarm threshold -60 Alarm threshold (Warning) 25 -70 -80 -90 Alarm threshold (Critical) 40 -100 0 20 40 60 80 100 120 Frequency (Hz) The dropping of the blade causes the center of gravity to shift, consequently exacerbating the effects of axial deviation and eccentricity Example of degradation level 2 alarm threshold Alarm threshold (Warning) 20 Expected implementation effects Enables the detection of anomalies and load changes in parts of Alarm threshold (Critical) 50 the axis that are far from the motor. -10 Blade dropped Degradation level 2:
-20 92 -30 (dB) -40 -50 Spectrum -60 -70 -80 -90 -100 0 20 40 60 80 100 120 Frequency (Hz) The dropping of the blade causes the center of gravity to shift, consequently exacerbating the effects of axial deviation and eccentricity -10 Blade dropped Degradation level 2: -20 92 -30 (dB) -40 -50 Spectrum -60 -70 -80 -90 -100 0 20 40 60 80 100 120 Frequency (Hz) The dropping of the blade causes the center of gravity to shift, consequently exacerbating the effects of axial deviation and eccentricity Blad e fixed Deg radation level 2: 34 Bl ade dropp ed Degr adation l evel 2: 92 Alarm threshold (Warning) 25 Alarm threshold (Critical) 40 Alarm threshold (Warning) 20 Alarm threshold (Critical) 50