Omron K7GE-MG User Manual page 66

3 Installation and Wiring
When the Load Is an Inverter-driven Motor
Install a contactor between the
inverter output and the motor.
If a noise filter is to be inserted at
the output side of the inverter,
insert it between the inverter
output and the primary output
terminal of the contactor.
Do not connect any other device
such as a transformer or a filter
between the contactor and the
motor. Doing so may cause
incorrect measurement.
Connect the voltage input of the
Probe Unit of the K7GE-MG to
the secondary output terminal
(motor side) of the contactor.
Make sure that it is not connected
to the primary side (power supply
side). It cannot be measured
correctly and may cause a
hazardous condition.
The figure shows a simplified view of the wiring for status output during measurement, and ALM 1 and
ALM 2 outputs. Use an appropriate relay for relaying in consideration of the switching capacity of the
output transistor. The specifications of the output transistor for the K7GE-MG are 24 VDC (+10%), 50
mA max.
3 - 16
R S T Inverter
PE
U V W
Output noise filter
Contactor
MC-a
Trigger
input
3
Operation
power supply
2
1
PE
7
17
17
Status output during
measurement
Insulation Resistance Monitoring Device User's Manual (N224)
K7GE-MG
4 1 3
Probe Unit
Main Unit
18 13 14 15 16
18
ALM 1 ALM 2