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HG-S / HG-T self-monitoring function

Suitable for use on manufacturing lines
Sensor equipped with a new self-monitoring function!

A sensor with a self-monitoring function diagnoses its own state and notifies when readjustment of settings / setup is required or when maintenance is needed.
The sensor determines its status and indicates "Normal," "Notification," "Caution" or "Fault." When not in normal status, the sensor checks the cause of problem and corrective measure, thus reducing equipment downtime and maintenance workload.

■Conventional manufacturing line

If an error is generated, the line stops. However, the cause of the error cannot be identified quickly.

■Manufacturing line installed with self-monitoring sensors

Each sensor informs of its status so that even if a problem occurs, the error generating source can be identified immediately and the detail be grasped.

■Self-monitoring function: Four types of status indication and judgment of state

Status Judgement of the state
Normal Operation is normal.  
Notification Check the settings.
Detected state is unstable.
* Recover to the normal state through checking installation and settings. Reduction in the incident light intensity.
Getting close to the end of service life.
Reached the state where the device should be replaced.
* Limitation in the writing frequency into the memory or in the operation hours, etc.
Fault Short-circuited or broken.
Reached the state where it is impossible to control as a device.
* Short-circuited output, damaged EEPROM, etc.
(Note) : There is no "Caution" status for the HG-S series.

Identification of malfunctioning location and cause

【Reduction of downtime】【Reduction of maintenance workload】
The sensor self-diagnoses its state, so if a malfunction occur, it is easy to identify the problem location and discover the cause of the problem.
Therefore, even if there is no experienced worker or skilled technician at the site to respond to the problem, it is possible to take an appropriate measure immediately. This minimizes the restoration time and reduces the maintenance workload.

Easy planning of maintenance schedule

【Improved productivity】【Predictive maintenance】
Conventional sensors can generate unexpected malfunctions and require many hours for maintenance and replacement; thus, an unscheduled shutdown of the manufacturing line may be required from time to time.
The self-monitoring function notifies the sensor replacement timing, thus allowing for planning the most efficient maintenance and replacement schedule. This helps prevent unexpected shutdowns of the manufacturing line and improves productivity.

* There is no "Caution" status for the HG-S series.

Example of a system that utilizes the self-monitoring function

Example of a system that utilizes the self-monitoring function
* To use the self-monitoring function of HG-T / HG-S series digital displacement sensors, a communication unit for digital displacement sensors that is compatible with the self-monitoring function (one of the following communication units: SC-HG1-ETC, SC-HG1-CEF, SC-HG1-C or SC-HG1-485) is required.
>>Communication Unit for Digital Displacement Sensors SC-HG1
* Please use a controller (HG-SC□) manufactured from February 2019 or later when HG-S series self-monitoring function is preferred.

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