K6CM Target Application Cooling tower fans Facility details Cools cooling water sent to production facilities. If temperatures rise during the day, fans are turned on to cool the fins, which in turn cool the cooling water. Fan system Motor operation conditions 5.5kW/200V/4poles Driving the motor by direct connection to commercial power supply: 60Hz Failure mode Deterioration over time Detection parameters Degradation level, Acceleration Degradation level 1 measurement results obtained from K6CM-CI Current (A) Measurement data Ideal sine wave The current waveform data Current (A) Measurement data Ideal sine wave 30 25 30 25 The current waveform deviates largely from the ideal sine wave.
20 15 20 15 10 5 10 5 00 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 -5 (seconds) -5 0 (seconds) -10 -15 -10 -15 -20 -20 -25 -30 -25 -30 Normal Condition Abnormal Condition Measurement value under normal operation 29 Measurement value under abnormal operation 71 Unit 2 Before maintenance After maintenance Unit 2 Unit 1 After maintenance Measurement value under normal operation 32 Measurement value under abnormal operation 44 Before maintenance Unit 1 Alarm threshold degradation level 1 for this application (examples) Expected implementation effects Enables the user to assess the right timing for maintenance based on the degree of deterioration instead of elapsed time.
Automatically notifies the user when to perform maintenance. 12 Comprehensive current diagnosis type II. Fan system application Vibration/Temperatue monitoring type Alarm threshold (Warning) 40 Alarm threshold (Critical) 50