OMRON ZFX-C Vision Sensor in Practical Use

Warning: The warning level can be set to display a warning when the measured value exceeds the warning range for N consecutive times (1~999), facilitating feedback before NG occurs.

Troubleshooting and Common Problems

9.1 Error Messages and Countermeasures

Possible causes and countermeasures for error messages

Unable to obtain clear images due to insufficient lighting; Low contrast; Adjust shutter speed for uneven image distribution; Use color filters; Apply smoothing or sharpening filtering; Adjust BGS level

The measurement target cannot accurately measure its position or direction due to movement, and the position correction function is enabled

Automatic setting failed. If the image is too dark or too bright, adjust the shutter speed or lighting brightness

Camera error, poor camera connection, check camera cable connection

Calibration failed. Select three points that are not on the same line and are collinear

Expression syntax error, bracket mismatch; Operator continuous check expression

SD card access error: SD card not inserted; Write protection; Insufficient space check SD card status

Incorrect password input. Incorrect password input (can be confirmed through the serial port PASSWORD command if forgotten)

9.2 Optimization of Image Quality Issues

Problem solving methods

Image darkness increases gain (× 1.0/1.5/2.0); Extend shutter time; Use the light source formula function

Low contrast, apply color filters (red/green/blue/yellow/cyan/magenta/gray/custom); Use sharpening filter

Smooth filtering is used for uneven images; adjust white balance

Tilt the reflective workpiece to install the camera; Use polarizing mirror

9.3 Common Operation Q&A

Q: How to extend the distance between the camera and the controller?

A: Use ZFX-XC3A/XC8A extension cables (up to two in series, total length ≤ 19m). After using the ZFX-XEQ01/XEQ02 digital equalizer, the total length can reach 28.4m.

Q: How to shorten the measurement time?

A: 1) Set the image rate to "high speed" (image compression, reduced accuracy); 2) Use partial functions (1/2 or 1/4 parts); 3) Set the image display to "Image Only" in RUN mode.

Q: What if the teaching is not successful?

A: 1) Check if the workpiece is within the teaching area; 2) Adjust the lighting to make the image clear; 3) For mobile teaching, check the TRIG timing (with an interval of at least 200ms).

Q: After changing the search area, is the search still conducted outside the area?

A: After changing the customer setting, the teaching must be re executed.

Q: When will the measurement conditions be saved?

A: When external TEACH signal teaching is successful; 2) When switching to RUN mode. If the TEACH button is pressed on the teaching screen and the power is directly turned off, the changes will be lost.

Maintenance and Precautions

Cleaning: Use an air blow or a soft cloth (dipped in a small amount of alcohol) to clean the front panel of the camera. Do not use diluents, benzene, acetone, or kerosene.

Ventilation film: Do not puncture or block the ventilation film with sharp objects, otherwise the protection level will fail or the front panel will condense.

Unused connector: must be covered with a protective cover to prevent static electricity and dust.

Grounding: When using a switch power supply, the FG terminal must be grounded.

Power off operation: Before connecting/disconnecting the camera cable, the controller power must be turned off, otherwise it may damage the camera.

LED safety: Equipped with illuminated cameras (ZFX-SC50/SC90, etc.) belonging to IEC62471 risk group 1, do not look directly at the light source.