K7GE-MG

Condition Monitoring Device – insulation monitoring

K7GE-MG performs an automatic measurement of the insulation resistance as soon as the device is powered-off, avoiding the need for periodic manual measurement, and allowing to evaluate the deterioration trend of insulation resistance thanks to the increased measurement frequency.

K7GE - MG is suitable with AC/DC motors, Servo and Electric Heaters, and collects data on PLC and/or related software and generates an alarm whenever the warning/critical threshold is exceeded.

A single controller can handle up to 8 devices, and its unique technology allows to perform insulation with a safe fixed 50V DC and allows for an eventual additional periodical check with MegaOhmeter without the need for disconnecting the K7GE.

Automatic insulation measurement when the motor/servo is OFF
Low voltage measurement with no overload on the machine equipment
Easy to install and retrofit

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Specifications & ordering info

Product	Supply voltage AC	Supply voltage DC	Description
K7GE-MGMA	100-240 V		Insulation Resistance Monitoring Device for 3-phase & servo motors, pumps and heaters, 100 to 240 VAC, transistor control output, Push-in Plus, LCD display, RS-485/Modbus/RTU
K7GE-MGMD	20.4-26.4 V	20.4-26.4 V	Insulation Resistance Monitoring Device for 3-phase & servo motors, pumps and heaters, 24 VAC/VDC, transistor control output, Push-in Plus, LCD display, RS-485/Modbus/RTU

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Features

Highly reproducible measurements

Trend monitoring is not possible if measurement fluctuates due to measurer’s lack of insulation resistance measurement know-how. However, K7GE can contribute to trend monitoring because tasks that cause measurement fluctuation may be set up by parameters, allowing for highly reproducible measurement.

k7ge features tab Automatic measurement sol

k7ge features tab Measurement frequency sol

High frequency of measurements to accurately identify equipment abnormalities

K7GE-MG enables automatic measurement that can be repeated every time the device is switched off.This helps avoid sudden stoppages due to insulation degradation which conventional inspections conducted at long intervals may miss.

Automatic measurement depends on equipment condition

The automatic measurement eliminates any risk of equipment failure by stopping measurement if the equipment power is restored after its start.

k7ge features tab Safe insulation resistance sol

Automatic measurement reduce electric shock accident for worker

K7GE helps reduce risk of work accidents such as electric shocks since measurement is automatic and does not require manual tasks.

Reduced risk of equipment failure due to measurement with fixed 50 VDC

k7ge features tab Safe measurement DC 50 V sol

k7ge features tab Remote condition monitoring sol

Remote condition monitoring for automatic insulation resistance measurement

K7GE enables remote monitoring from the office via network connection using a touch panel, PLC, and communications converter. It also allows on-site measurement results confirmation and parameter setting changes via the Main Unit indicator.

User-friendly features that support the trend monitoring

1. Scalable Probe Units

K7GE supports up to eight Probe Units for measurement targets on the same system. It provides for a space-efficient installation as the number of Probe Units can be scaled in accordance with the number of measurement targets.

*1. The Main Unit and Probe Units are sold separately; purchase in the required combination for use.

2. Easy to install and retrofit

Easy to retrofit since it can be used just by wiring to the power cable of the target equipment.

k7ge features tab Connection example sol

k7ge features tab Maintenance time notification sol

3. Maintenance timing notification by two-level alarm: warning and critical

The threshold for indicating the degree of degradation can be set in two levels. Anomaly scan also be confirmed through communications data. This feature enables identifying the optimal timing for maintenance without visiting the site frequently. Furthermore, a load (such as an anomaly detection indicator) can be directly connected to the units transistor alarm outputs.

*2. Factory default settings

4. Periodic inspection by Megohmmeter

K7GE does not have any impact on measurement results by the Megohmmeter since its internal drycontact isolates it from the equipment target of measurement, except during measuring. Whenneeded, it can easily support measurement by calibrated measuring equipment as well.

k7ge features tab Periodic inspection sol

Condition monitoring devices can be configured with a single tool

Easy three-step configuration The Condition Monitoring Configuration Tool allows for batch configuration of a wide range of condition monitoring devices, such as those for monitoring motors, temperatures, insulation, and heaters. It can be used without any special skills, reducing training effort

condition monitoring devices webpage images 3840xx en sol

Easy three-step configuration

The Condition Monitoring Configuration Tool allows for batch configuration of a wide range of condition monitoring devices, such as those for monitoring motors, temperatures, insulation, and heaters. It can be used without any special skills, reducing training effort. Setup can be completed in just three steps: communications setup, initial setup, and trigger setup.＊1 With its high operability, the tool boosts on-site productivity as well.

Download Condition Monitoring Configuration Tool

easy three step configuration webpage images 3840xx en sol

Videos

OMRON K7GE insulation resistance monitoring device: basic operation demonstration

This is a demonstration video about insulation resistance measurement using the OMRON K7GE-MG for 3 motors. For more information, visit:

Comparison between insulation resistance tester mega tester and OMRON K7GE condition monitor

In this video, we highlight the benefits of the OMRON K7GE condition monitoring device over the traditional insulation resistance meter (mega ohm tester). For more information, visit:

Installing the OMRON K7GE condition monitoring device when the load is an inverter-driven motor

In this video, you can see how to install the OMROn K7GE condition monitoring device when the load is an inverter-driven motor. For more information, visit: