Sensor Connection - Omron K6CM Startup Manual

2 Sensor connection

Install sensors on the motor wiring.
Comprehensive current diagnosis type (K6CM-CI)
Three-phase
power supply
Single-phase
power supply
Measurement
trigger signal
Dedicated tool
By keeping a PC or PLC continuously connected, you can monitor the state of a motor.
Note1. Even without a PC, the alarm bar of the main unit notifies you of changes of motor state.
Note2. There is a limit on CT open/close counts.
Note3. Measure one phase using CT.
Note4. CT that can be used will differ depending on motor capacity and voltage. Refer to the Datasheet (N218) for the
formula to calculate the current value from the motor capacitance.
Using a K6CM-CIM
*1. When the motor is driven by an inverter, it may not be possible to monitor the motor or load abnormalities. Refer to the
User's manual (N219) for details.
*2. Modbus TCP is not supported.
*4. The CT cable cannot be extended.
Using a K6CM-CI2M
*1. I n an environment where the motor is driven by an inverter, if the degradation level 1 is used as the measurement
value, it may not be possible to monitor the motor or load abnormalities. Therefore, it is recommended to use the
degradation level 2. Refer to the User's manual (N219) for details.
*3. Since the frequency band of the harmonics of the drive frequency and the frequency band in which errors such as load
imbalance and misalignment appear are the same frequency band for a 2-pole meter, sensitivity may be reduced with
degradation level 2.
*4. The CT cable cannot be extended.
26
K6CM-CI
EtherNet/IP
Modbus TCP *2
LAN
*1
K6CM-CIC (CT)
Any type of
single-phase
measurement
2.9 m
(pre-wired cable) *4
Output signal
(transistor output)
Built-in EtherNet/IP port
*3
Object monitored
0.75 kW to 300 kW (400 V)
0.75 kW to 150 kW (200 V)