A-3 K6Cm Common Specifications - Omron K6CM User Manual

Appendices

A-3 K6CM Common Specifications

Function Specifications
Item
Target motor
Input Measurement
value
Sampling cycle
Moving averaging
of measurement
values
Trigger mode
Start and end In case of Free
of monitoring run (no trigger)
In case of external
trigger
In case of internal
trigger
Number of Triggers
Monitoring delay time
Alarm setting By measurement
value
Alarm hysteresis
Alarm latch
Monitoring Individual alarm
method by measurement
value
Comprehensive
alarm as K6CM
device
A - 4
Three-phase induction motor *1 (possible for current on secondary side of inverter)
However, depending on how the inverter is used, changes may not be confirmed by mea-
surement. For the Insulation resistance type (K6CM-IS), refer to the Wiring Diagram of
the Insulation Resistance Type (K6CM-IS) on page 5-27 in 5-6 I/O wiring on page 5-25.
It depends on the model of the K6CM device.
Refer to "Measurement values for each K6CM device "
It depends on measurement value.
Refer to A-4 K6CM device Individual Specifications on page A-8
Every time sampling is performed, it is possible to average past n times of data including
that sampling data.
Either n = 1, 2, 4, 8, 16, or 32
Moving averaging of measurement value
Specify the start condition of monitoring.
External trigger, internal trigger, or no trigger (always available) can be selected.
Refer to 3-2 Measurement System on page 3-3
Monitoring during power ON
One of the following
• Start the monitoring when the external contact changes from OFF to ON, and end the
monitoring when the monitoring time has elapsed.
• Start the monitoring when the external contact changes from ON to OFF, and end the
monitoring when the monitoring time has elapsed.
• Monitoring while external input is ON
One of the following
• Start the monitoring when the measurement value exceeds the set value (trigger level),
and end the monitoring, when the monitoring time has elapsed.
• Start the monitoring when the measurement value falls below the set value (trigger
level), and end the monitoring, when the monitoring time has elapsed.
• Monitoring while the set value (trigger level) is exceeded.
It is a function to simply estimate the life of the motor from the number of triggers since
the start of measurement. The trigger count can not be reset.
Total of external trigger and internal trigger: 0 to 6,553,500 times.
The number of triggers is updated every hour. Therefore, if the power is turned OFF
before 1 hour elapses, the trigger count can not be recorded correctly.
When it reaches 6,553,500 times, it will not be counted any more.
The monitoring delay is a function to delay the start of monitoring, and is used to wait for
the measurement values to stabilize. The monitoring delay operates when the trigger
mode is the external trigger or the internal trigger, and monitoring starts once the monitor-
ing delay time has elapsed after the trigger start.
It depends on K6CM device type. Refer to 6-2-1 Settings for Each Monitor Type of K6CM
devices on page 6-19.
Critical level and Warning level can be set for each upper limit or lower limit (different
depending on measurement value) of measurement value.
10% width of threshold setting value (fixed)
Depending on the setting, you can specify None / Yes. If yes, the alarm condition (alarm
bar, both transistor outputs 1 and 2) is latched. Can be released by the front [ALM RST]
key (cancellation by communications is impossible).
Compare the measurement value with the alarm set value (Critical level and Warning
level) and output an alarm (Critical, Warning).
When multiple alarms (Critical, Warning) occur, they are output by OR logic*2 with priority
of Critical> Warning.
K6CM Motor Condition Monitoring Device User's Manual (N219)
Specifications