Guide For Setting Alarm; Comprehensive Current Diagnosis Type (K6Cm-Ci2) - Omron K6CM User Manual

3-4

Guide for Setting Alarm

3-4-1

Comprehensive Current Diagnosis Type (K6CM-CI2)

Refer to the following guideline to set the alarm threshold value of the monitored degradation level in
the comprehensive current diagnosis type (K6CM-CI2).
Monitoring by Degradation Level 1
 When driving the motor by direct connection to commercial power supply
When driving the motor without an inverter, use the following setting values at first.
• Degradation level 1 alarm threshold value (Warning): 20
• Degradation level 1 alarm threshold value (Critical): 50
Note The default value of alarm threshold (Warning) is set to 30, which is the above 20 plus 10.
0
Normal Normal Normal
Since the value of degradation level 1 differs depending on the equipment status and motor driving
conditions, set alarm threshold values suitable for the equipment using the above alarm threshold
values as a guide.
Refer to the K6CM Motor Condition Monitoring Device STARTUP GUIDE (N221-E1) for details.
 When driving the motor with an inverter
With an inverter, the influence of the inverter control appears in the current waveform. The degrada-
tion level 1 will be measured to be larger than the actual value.
Therefore, shift the above initial setting value in the degradation level 1 measured in a new product
or the normal condition after overhauling before use.
Inverter Operation: 100%
Example of actual measurement:
Initially measurement value of the degrada-
tion level 1 is "51".
K6CM Motor Condition Monitoring Device User's Manual (N219)
20 50
Maintenance required Maintenance required Maintenance required
Example: The degradation level 1 measured at the begging of
3 Measuring and monitoring System
100
Critical Critical Critical
use is 51 due to the influence of inverter control.
However, it is not abnormal.
Set the initial measurement value to 71 (51 + 20) for
the degradation level 1 alarm threshold value
(warning) and set the initially measurement value to
101 (51 + 50) for the degradation level 1 threshold
value (critical), and then perform trend monitoring.
The sensitivity of the degradation level differs
depending on the equipment to be monitored, so
adjust the values of 20 and 50 according to the
equipment.
3
3 - 19