omron — K6CM series Application Guide

I. Pump system application Comprehensive current diagnosis type K6CM Target Application Washing pumps for automotive components Pump system Facility details Washing tank Pump for washing. Motor-driven pump sends washing water to the washing tank. Motor operation conditions Water intake 11kw/200V/4poles Inverter drive frequency:

60Hz Motor Pump Failure mode Consistent flow of washing water Load abnormality (Cavitation) Detection parameters K6CM-CICB Degradation level 1 K6CM-CIM Degradation level 1 measurement results obtained from K6CM-CI  The current waveform data * 60 60 Waveform irregularities 40 40 20 20 Current (A) 0 Current (A) 0 -20 0 50 100 150 200 50 100 150 200 -20 0 -40 -40 -60 -60 Normal Condition Abnormal Condition Time (ms) Time (ms) Measurement value under normal operation: 20 Measurement value under abnormal operation: 75 * K6CM does not output electric current waveform data. Abnormal operation:

Air bubble has entered the pump, causing an air lock Alarm threshold degradation level 1 for this application (examples) Expected implementation effects Detects air locks in pumps and other abnormal conditions so that the system can be maintained before degradation causes it to shut down. 5 Alarm threshold (Warning) 30 Alarm threshold (Critical) 50