Omron K7GE-MG User Manual page 24

1 Overview
Supports Multiple Channel Measurement
K7GE-MG can be measured up to eight channels per Main Unit by adding
more Probe Units. This reduces cost and installation space per channel.
Periodic Inspection by a Megohmmeter Is Possible with the
K7GE-MG Installed
The K7GE-MG is cut off from the load by the
internal dry contact except during measurement.
This allows inspection using a Megohmmeter
without disconnecting the wiring.
Easy Retrofitting to the Equipment
•
The signal wire of the K7GE-MG can be connected in parallel with the
secondary output terminal of the contactor and the PE terminal of the
load. Therefore, it is not necessary to perform large-scale wiring again.
•
If you connect the auxiliary contact of the contactor to the trigger input
terminal of the K7GE-MG, you can use it as a measurement start signal. It
contributes to the reduction of parts because no additional sequence is
required.
1 - 4
MC
Megohmmeter
Measurement current of the
Megohmmeter does not flow
Note The above diagram shows only the parts of the internal
circuit of the K7GE-MG that are necessary for explanation.
Insulation Resistance Monitoring Device User's Manual (N224)
K7GE-MG 8 Units max.
K7GE-MG
L3 Contact OFF
except during
measurement
PE
Control
MC-a
MC panel
Trigger
input
L2
L3
PE
PE