Disclaimer
This document has been developed specifically for Omron ZX1 displacement measurement sensor range and referencing ZX1-LD Laser Displacement Sensor CMOS Type Instruction Sheet.
Introduction
The ZX1 series displacement sensor offer high-speed, high-accuracy, and user-friendly operation for a variety of displacement measuring tasks. They feature a response time as low as 60 µs and a measuring cycle as low as 30 µs. The sensors ensure stable measurement across diverse surface conditions, including metals, plastics and shiny materials, due to the advanced HSDR (High Speed Dynamic Range) CMOS camera chip and a stepless laser power adjustment algorithm. This facilitates superior quality assurance and optimized productivity in machine operations.
This article will guide you on tuning you ZX1 sensors for the different scenarios available.
Quick Reference for Tuning Operation
Notes:
- When setting background suppression function to ON and performing tuning,; the measurement value and sensitivity level can be limited according to the sensitivity. Use it when abnormal distance is detected due to diffuse reflection caused by surrounding walls, etc.
- When performing tuning, threshold values are recorded in EEPROM (non-volatile memory) in the sensor. The writing life of EEPROM is 100,000 times. Be careful of writing life when performing measurement-by-measurement tuning.
Switch Channel to Set Threshold
- Briefly press the + and - buttons in Measurement mode.
- The channel display changes in the following sequence by pressing the + or - button.
- Press the ‘MODE’ button to return to measurement mode.
Detect for Workpiece Presence/Absence
2-point Tuning
Used to distinguish between two objects with different height from the ZX1 (e.g. OK and NG, workpiece and background or workpiece A and B).
- Press the ‘TUNE’ button (within 1 second) once without a workpiece.
- Press the ‘TUNE’ button once again with a workpiece.
Note: The order of the workpiece does not matter.
1-point Tuning
Used to judge the presence/absence of a workpiece by referring to the pre-determined background.
- Hold the ‘TUNE’ button for at least 3 seconds, but no more than 5 seconds, until ‘TUNE’ blinks on the ZX1 display. This step is to be performed without a work piece.
- When ‘TUNE’ starts blinking, release the ‘TUNE’ button.
- Once the display changes from ‘TUNE’ to ‘T-P1’, then 1-point tuning is complete.
Set Upper Limit and Lower Limit (Using Area Output)
2-point Area Tuning
Used to judge if the workpiece is within the range by using the upper limit and lower limit workpieces.
- Select “ON” for area output in menu setting mode.
- Return to measurement mode.
- Set the workpiece at the desired upper limit.
- Press the ‘TUNE’ button
- Set the workpiece at the desired lower limit.
- Press the ‘TUNE’ button
- Once the display changes ‘TUNE’ to ‘PNT-2’, 2-point tuning is complete.
Note: The order of the workpiece does not matter.
Set Plus/Minus (±) Tolerance
1-point Area Tuning
Used to assign the upper and lower limits to one actual workpiece and judge if the workpiece is within the range.
- Set the AREA item in the menu to “ON”.
- Return to the measured value display
- Hold the ‘TUNE’ button for at least 3 seconds, but no more than 5 seconds, until ‘TUNE’ blinks on the ZX1 display with a workpiece to detect on the reference surface.
- Once ‘TUNE’ starts blinking on the display, release the ‘TUNE’ button
- Once the display changes from ‘TUNE’ to ‘T-P1’, 1-point tuning is complete.
Note: To set plus and minus threshold values using “0” as the background, use the zero reset function to reset the distance to “0”. Then, perform 1-point area tuning.