I. Correction of Minor Data Fluctuations
Fault Characteristics: Data fluctuates slightly after connecting to the PLC, with an amplitude of fluctuation ≤ 0.1mm and irregular jumping.
The primary cause is an unstable power supply voltage and inadequate grounding of the instrument or equipment.
Repair Procedures: Verify the stability of the power supply voltage, replace the regulated power supply, and ensure that the sensor and equipment are consistently grounded. This should resolve the minor fluctuation issue.
II. Correcting Irregular Fluctuations
Fault Characteristics: The data is completely irregular, with significant fluctuation amplitudes, rendering it impossible to obtain stable readings.
Core Cause: The signal link is subjected to electromagnetic interference as a result of the presence of strong interference sources on site, including large frequency converters and motors.
Repair Procedures: To isolate the interference source, install a signal isolation barrier in the signal circuit. If the issue persists, inspect the sensor's internal circuitry. Return it to the manufacturer for inspection and repair if necessary.
III. Correcting Periodic Fluctuations on a Regular Basis
Fault Characteristics: Data fluctuates in a consistent manner over a predetermined period, with uniform fluctuation intervals.
Core Cause: Inadequate sensor calibration, demagnetisation of the magnetic ring, or interference from magnetically conductive components in the vicinity.
Repair Procedures: Recalibrate the displacement sensor, install a magnetic shielding element to prevent magnetic interference, and verify the sensor's accuracy to guarantee stability..
IV. Specific Repair for Data Jumps in Optical Laser Displacement Sensors
Fault Characteristics: Laser sensors exhibit data spikes that are significantly influenced by temperature and light.
Core Cause: The mounting bracket's insufficient rigidity results in stray light interference, thermal drift, and vibration.
Repair Procedures: Prevent the sensor from being exposed to sources of high heat and light. After the apparatus is turned on, allow it to warm up for a period of 15 minutes. To eliminate vibration, reinforce the mounting bracket. This will rectify the data jump issue.
This tiered repair solution is capable of addressing 99% of data jump scenarios during commissioning, enabling an immediate on-site resolution without the need for a factory return. This ensures that the sensor can be rapidly restored to stable operation.
