OMRON ZX1-LD Series Laser Displacement Sensor

PRECAUTIONS ON SAFETY

Meanings of Signal Words

WARNING: Indicates a potentially hazardous situation which, if not avoided, will result in minor or moderate injury, or may result in serious injury or death. Additionally, there may be significant property damage.

Explanation of Signs

• Laser beam: Indicates caution on potential laser beam hazard. ⚡️
• Do not disassemble: Indicates prohibition when there is a risk of minor injury from electrical shock or other source if the product is disassembled. ??

Alert Statements

WARNING: Do not expose your eyes to the laser radiation either directly (i.e., after reflection from a mirror or shiny surface). Loss of sight may possibly occur in case of the exposure to laser high power density.

Caution: Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.

Do not disassemble the product. Doing so may cause the laser beam to leak, resulting in the danger of visual impairment.

SAFETY PRECAUTIONS FOR USING LASER EQUIPMENT

Laser safety measures for laser devices are stipulated both in Japan and overseas. Here, four cases are described.

(1) Usage in Japan

The JIS C6802:2014 standard stipulates the safety precautions that users must take according to the class of the laser product. The ZX1-LD is classified into class 2 defined by this standard. The ZX1-LDL is classified into class 1 defined by this standard.

Labeling on Laser Use

The ZX1-LD has the following WARNING label or explanatory label on the side of the sensors.

• ZX1-LD Laser Warning Label

• ZX1-LD Laser Warning Label (FDA)

• ZX1-LD Explanatory Label

• ZX1-LD Explanatory Label (FDA)

(2) USA

This product is subjected to the U.S. FDA (Food and Drug Administration) laser regulations. The ZX1-LD and ZX1-LDL is already reported to CDRH (Center for Devices and Radiological Health). Accession Number: (ZX1-LD :1210041-000) (ZX1-LDL :1210041-001)

When using a device equipped with the ZX1-LD and ZX1-LD L in the U.S., attach an FDA certification label on the sensor at the correct location as indicated, and replace the warning label or explanatory label with corresponding English Label(FDA).

The ZX1-LD is classified into Class 2 by the IEC 60825-1:2007 standard according to the regulations of Laser Notice No.50 of the FDA standard. The ZX1-LDL is classified into Class 1 by the IEC 60825-1:2007 standard according to the regulations of Laser Notice No.50 of the FDA standard.

• ZX1-LD Laser Warning Label (FDA)

• ZX1-LD Explanatory Label (FDA)

FDA Certification label

(3) China

The ZX1-LD is classified into Class 2 by the GB7247.1:2012 standard. When using in China, warning labels must be replaced by Chinese ones supplied with the product.

• ZX1-LD Laser Warning label (Chinese)

(4) Usage in countries other than Japan, U.S. and China

When using in countries other than Japan, U.S. and China, warning labels must be replaced by suitable for the area ones supplied with the ZX1-LD. When exporting to Europe, labels fall under EU standard EN60825-1:2014. The ZX1-LD is classified into Class 2 by the IEC 60825-1:2014 / EN 60825-1:2014 standard.

The ZX1-LDL is classified into Class 1 by the IEC 60825-1:2014 / EN 60825-1:2014 standard. The ZX1-LDL is classified into Class 1 by the GB7247.1:2012 standard.

PRECAUTIONS FOR SAFE USE

The following precautions must be observed, since they are essential to ensure safety in operation.

Installation Environment

• Do not use the Sensor in locations subject to explosive or flammable gases.
• To ensure safety in operation and maintenance, do not install the Sensor near high-voltage equipment or power devices.

Power Supply and Wiring

• Do not impose voltage exceeding the rated voltage: 10 to 30 VDC, including 10% ripple (p-p).
• When supplying power to the Sensor, make sure that the polarity of the power is correct, and do not connect to an AC power supply.
• Do not short-circuit the load for the open collector output. Short-circuiting the load may cause fire or damage on the Sensor.
• Connect the load correctly. Short-circuiting the load may cause fire or damage on the Sensor.
• Keep the load within the rated range. Overloading may result in fire or damage on the Sensor.
• Wire the product cable separately from high-voltage or power lines. Placing them in the same wiring or the same duct may cause induction, resulting in the product malfunction or damage.
• Always turn off the power of the Sensor before connecting or disconnecting the cable or connector.
• Do not use the Sensor for the safety circuits in nuclear power or life-critical applications.
• Implement safety measures e.g. fail-safe circuits.

Installation

• Make sure that all installation screws must be tighten securely.
• Tightening torque: M3, 0.5N･m (ZX1-LD50/ZX1-LD100)
• M4, 1.2N･m (ZX1-LD300/ZX1-LD600)

Others

• Do not attempt to disassemble, deform by pressure, incinerate, repair, or modify this product.
• When disposing of the product, treat as industrial waste.
• If you notice an abnormal condition such as a strange odor, extreme heating of the unit, or smoke, immediately stop using the product, turn off the power, and consult your dealer.

PRECAUTIONS FOR CORRECT USE

Installation Location

• Do not install the product in locations subjected to the following conditions:
• Surrounding air temperature outside the rating
• Rapid temperature fluctuations (causing condensation)
• Relative humidity outside the range of 35 to 85%
• Presence of corrosive or flammable gases
• Presence of dust, salt, or iron particles
• Direct vibration or shock
• Reflection of intense light (such as other laser beams, electric arc-welding machines, or ultra-violet light)
• Direct sunlight or near heaters
• Water, oil, or chemical fumes or spray, or mist atmospheres
• Strong magnetic or electric field
• In the water, rain, or outdoors

Power Supply and Wiring

• Do not supply the power to the Sensor before checking the I/O wiring.
• Ground the FG terminal when using a commercially-available switching regulator.
• If the power supply line is subject to surges, connect a surge absorber that meets the conditions of the operating environment.
• Do not turn ON the power after wiring before making sure that the power supply is connected correctly; there are no faulty connections, e.g. load short-circuits; the load current is correct. Incorrect wiring may result in failure.
• Use a ZX0-XC10R or ZX0-XC20R Extension Cable (sold separately) to extend the Sensor's cable. Use only one cable. Do not extend the cable for the Sensor to a length exceeding 20 m.
• The display and indicators turn ON after approx. 2.5 seconds after the power is turned ON.
• The sensor is certificated by the UL standard on the assumption of the following installation conditions:
• It is based on the assumption of usage in "Class 2 circuit". Please use it with "Class 2 power supply" in the United States or Canada. The current rating of overcorrect protection is 0.8A max.
• It is certificated as open type. The sensor shall be installed within an enclosure.
• Rating of the cable is 30V. Please use it as internal cable wiring only in the end products equipment.

Warming Up

• After turning ON the power, allow the Sensor to warm up for approx. 30 minutes prior to use. The circuitry is not stable immediately after turning the power ON, and the values gradually change until the Sensor is completely warmed up. When using LD-OFF input for a long period of time, perform warm-up for more than 30 minutes after cancelling LD-OFF.

Maintenance and Inspection

• Always turn OFF the power of the Sensor before connecting or disconnecting the cable or for making adjustment.
• Do not use thinner, alcohol, benzene, acetone, or kerosene to clean the Sensor.
• If considerable foreign matter or dust collects on the glass surface of the front of Sensor, use a blower brush (for camera lenses) to blow off the foreign matter. Avoid blowing it off with your breath. For a small amount of foreign matter or dust, gently wipe with a soft cloth. Do not wipe hard. The damaged glass surface may result in detection errors.

Sensing Object

The product cannot accurately measure the following types of objects: Transparent objects, objects with an extremely low reflective sensor ratio, objects smaller than the spot diameter, objects with a large curvature, excessively inclined objects, etc.

Checking the Package Content

• Sensor: 1
• Instruction sheet (this sheet): 1 each (Japanese and English)
• FDA Certification label: 1
• Laser Warning Label: 1 each (Japanese, English(FDA), English and Chinese)
• (The explanatory labels are attached to ZX1-LDL instead of the warning explanation labels: Japanese, English(FDA) and English)

1 Installation

1-1 Dimensions

ZX1-LD50/ZX1-LD100

Diagram Description: Shows the external dimensions of the ZX1-LD50/ZX1-LD100 models. Key dimensions include:

• Overall dimensions: 55.8mm (width) x 47mm (height) x 24.1mm (depth)
• Mounting holes: 2 x φ3.2mm
• Emitter/Receiver axis information.
• Emitter center position mark.
• Cable type: Vinyl insulated round-shaped robot cable, Dia 6.5mm, 9-wire, 0.125 mm² conductor cross-section, 0.7mm insulator diameter, 2m standard length, minimum bending radius 39mm.
• Model specific dimensions L* and angle A* are noted (e.g., ZX1-LD50: L=50, A=21°; ZX1-LD100: L=100, A=11.5°).

ZX1-LD300/ZX1-LD600

Diagram Description: Shows the external dimensions of the ZX1-LD300/ZX1-LD600 models. Key dimensions include:

• Overall dimensions: 66mm (width) x 50.1mm (height) x 27.2mm (depth)
• Mounting holes: 2 x φ4.5mm
• Emitter/Receiver axis information.
• Emitter center position mark.
• Cable type: Vinyl insulated round-shaped robot cable, Dia 6.5mm, 9-wire, 0.125 mm² conductor cross-section, 0.7mm insulator diameter, 2m standard length, minimum bending radius 39mm.
• Model specific dimensions L* and angle A* are noted (e.g., ZX1-LD300: L=300, A=6.6°; ZX1-LD600: L=600, A=3.4°).

Connector Joint Model & Extension Cable

Diagram Description: Shows dimensions for connector joint models and extension cables. Extension cables (ZX0-XC10R: 10m, ZX0-XC20R: 20m) are also robot cables with similar specifications.

1-2 Mounting Sensor

Diagram Description: Illustrates mounting hole dimensions for ZX1-LD50/ZX1-LD100 (2-M3 screws, P=0.5) and ZX1-LD300/ZX1-LD600 (2-M4 screws, P=0.7). Mounting torque specifications are provided: M3: 0.5N･m, M4: 1.2N･m.

Caution on Mounting Direction

• Detection Near the Wall Surface: Sensor is less influenced by ambient lighting.
• Cavity Detection: Sensor is easily influenced by ambient lighting, which may cause detection value variations. Detection is not possible if the emitter or receiver section is blocked.
• Detection of Workpiece with Level Difference: Stable detection is possible regardless of level difference. Level difference may cause an abnormal detection value.

Note: Before performing tuning, apply matte paint on the wall surface or turn ON the background suppression function to avoid laser light reflection.

1-3 Wiring

Diagram Description: Shows wiring diagrams for NPN and PNP output types. Lists wire colors, names, and functions:

• Brown: Power supply (DC10-30V)
• Blue: GND (0V)
• White: OUT1 Judgment output (CH1 judgment result)
• Green: OUT2 Judgment output (CH2 judgment result)
• Black: Analog output (4-20mA)
• Shield: Analog GND (Connect separately from 0V GND. Important: Connect to 0V if analog output is not used.)
• Orange: TUNE1 input (for CH1 tuning)
• Pink: TUNE2 input (for CH2 tuning)
• Purple: Zero reset input (executes or cancels zero reset)
• Red: LD-OFF input (When ON, laser stops emitting. Output behavior depends on keep function settings. Display shows [LdoFF].)

Note: Wire the Sensor correctly. Unused wires must be insulated. Incorrect wiring may result in damage.

2 Settings

2-1 Setting and Display Overview

Nomenclature and Function

• [MENU]: Menu Indicator (Orange) - Turns ON in MENU setting mode.
• [ZERO]: Zero reset indicator (Orange) - Turns ON when zero reset is set.
• OUT1 Output indicator (Orange) - Turns ON when the value exceeds Threshold 1 or is within the range of 1L to 1H.
• OUT2 Output indicator (Orange) - Turns ON when the value exceeds Threshold 2 or is within the range of 2L to 2H.
• [LD ON]: Laser ON indicator (Green) - Turns ON when the sensor is emitting laser.
• [ST]: Smart tuning indicator (Blue) - Turns ON when tuning is performed with the background suppression function ON.
• [TUNE] button: Used to perform tuning.
• [MODE] button: Switches between Measurement mode and MENU setting mode (hold for 3+ sec). Switches to CH Setting mode (press < 3 sec).
• [UP]/[DOWN] buttons: Used to change a threshold value or select a setting item.
• Digital display: Shows displacement volume in Measurement mode, or setting item/value in other modes.

(1) Switch Channel to Set Threshold

CH Setting Mode

1. Briefly press the [MODE] button in Measurement mode.
2. Press the [MODE] button to cycle through CH-1 and CH-2.
3. Press the [MODE] button again to return to measurement mode.

Note: When Area Output is ON, displays show CH1H, CH1L, CH2H, CH2L for thresholds.

(2) Detect for Workpiece Presence/Absence

2-point Tuning

Used to distinguish between two objects with different heights (e.g., OK/NG, workpiece/background, workpiece A/B).

1. Without a workpiece, press the [TUNE] button once (within 1 sec). The display shows [tunE] → [t-p1] → [pnt 2].
2. With a workpiece, press the [TUNE] button again. The display shows [tunE] → [t-p2] and 2-point tuning is completed.

Note: The order of workpieces does not matter.

(3) Detect for Workpiece Presence/Absence (Tuning Only Using Reference Surface)

1-point Tuning

Used to judge presence/absence of a workpiece by referring to a pre-determined background (reference surface).

1. Without a workpiece, hold the [TUNE] button (3 to 5 seconds) until [tunE] blinks.
2. When [tunE] blinks, release the [TUNE] button. The display shows [tunE] → [t-p1] and 1-point tuning is completed.

Note: To set plus/minus tolerance using "0" as background, perform zero reset first, then 1-point area tuning.

(6) When (2) to (5) Methods Failed

Tuning mode without Workpiece (Area Output is OFF): Used for judging presence/absence based on background. Handles complex shapes or low light levels by judging them as workpiece present.

Tuning mode without Workpiece (Area Output is ON): Assigns upper/lower limits to reference surface distance. Handles complex shapes or low light levels by judging them as workpiece present.

Note: TUNE1/TUNE2 inputs can be used for CH1/CH2 tuning respectively. Tuning type can be fixed. Background suppression function can be enabled by setting ON and tuning. EEPROM write life is 100,000 times.

2-2 Output and Threshold Value

Diagram Description: Shows the relationship between measured values, thresholds, and output states (OUT1, OUT2) for Area Output OFF and Area Output ON scenarios. Explains normal-open and normal-closed output polarity.

2-3 Tuning

Quick Reference for Tuning Operation

Select CH using [MODE] button, then use [TUNE] button for tuning:

• 1-point tuning: Press [TUNE] for 3-5 seconds.
• 2-point tuning: Press [TUNE] once for 1st point, again for 2nd point.
• Tuning mode without workpiece: Press [TUNE] for 5 seconds.

2-4 Fine Adjustment of Threshold Value

Use [UP]/[DOWN] buttons to slightly adjust threshold values (Threshold 1/1H/1L, Threshold 2/2H/2L). Indicators OUT1/OUT2 blink during adjustment.

2-5 Fine Adjustment of Hysteresis Width

Hysteresis width prevents unstable judgment output near boundaries. It sets the distance between the operating point (threshold) and the return point. Adjusting hysteresis width can help distinguish small steps, but may cause unstable output with low reflection light.

3 Convenient Setting Features

(1) Reset the Present Distance to "0"

Zero Reset: Sets the current distance value to "0". Press [MODE] + [TUNE] buttons simultaneously. Zero reset indicator turns ON. Can also be performed via external zero reset input.

Zero Reset Cancel: Press [MODE] + [TUNE] buttons simultaneously for 3+ seconds to cancel. Can also be cancelled via external zero reset input.

(2) Avoid Mis-operation

Key Lock Function: Disables button operations in Measurement mode. Press [MODE] + [TUNE] buttons simultaneously for 3+ seconds to lock (display shows [LOC]). Key lock state is retained after power cycle.

Key Lock Cancel: Press [MODE] + [TUNE] buttons simultaneously for 3+ seconds to unlock.

4 Detailed Settings

Enter Menu Setting mode by holding the [MODE] button for 3+ seconds. Settings are common to CH1 and CH2.

1. Output Polarity (Pol): Selects output polarity (Normally-open or Normally-closed). Affects output ON/OFF behavior.

2. Tuning Type (Type): Selects tuning method (e.g., 2-point tuning, 1-point tuning, tuning without workpiece). Fixes tuning method and external input allocation.

3. Response Time (SPd): Sets response time (Standard: 100ms, High-speed: 10ms, Super high-speed: 1ms). Longer response time recommended for stable detection.

4. Keep Function (YEEP): Sets output content during measurement errors (E-dr, E-brt, E-our) or before measurement confirmation. Options include: Both outputs OFF, Monitor output (clamp value), or outputting the last valid value.

5. Scaling (SCAL): Configures analog output range (4-20mA) relative to measured values. Allows setting initial and arbitrary measurement values for 4mA and 20mA outputs.

6. Background Suppression Function (SAR-E): Makes the sensor sensitive only to the workpiece during tuning. Restricts sensitivity and measurement values based on tuning sensitivity. Effective after setting ON and performing tuning. Smart tuning indicator (Blue) confirms activation.

7. Hysteresis width (HY5): Sets hysteresis width to prevent unstable judgment output. Standard setting provides initial width; User setting allows arbitrary width. Smaller width allows distinguishing small steps but may cause instability with low reflection.

8. Timer Function (TMR): Sets timer operation time (Off-delay, On-delay, One-shot, On/Off-delay). Used for specific output timing requirements.

9. Area Output (A-ER): Enables or disables area output. When enabled, output is ON when measured value is within Threshold L to Threshold H range. ON/OFF is reversed for "tuning without workpiece" mode. CH1 and CH2 switch simultaneously.

10. Zero Reset Memory (SA): Holds the zero reset value after power off (enabled) or resets on power cycle (disabled). Enabling writes to EEPROM (100,000 write cycles limit).

11. Eco Function (Eco): Saves power and turns off digital display after 30 seconds of inactivity in RUN mode. Normal display returns on button press.

12. Setting Reset (RST): Resets all settings to factory defaults. Requires confirmation (YES.P).

5 Error Messages

Displays error codes and remedies:

• E-ld (LD malfunction error) - Deteriorated laser diode. Remedy: Check wiring, power cycle. Replace if persists.
• E-5y5 (System error) - Sensor faulty. Remedy: Check wiring, power cycle. Replace if persists.
• E-me1 (EEPROM error 1) - Sensor setting memory error. Remedy: Reset settings via [MODE] button (3+ sec). Replace if persists.
• E-me2 (EEPROM error 2) - Sensor setting memory error. Remedy: Reset settings via [MODE] button (3+ sec). Replace if persists.
• E-SHE (Load short-circuit detection error) - Judgment output short-circuited. Remedy: Check wiring, power cycle.
• E-tUn (Tuning execution error) - Tuning failure. Remedy: Set slower response time, retry tuning. Check distance within measurement range.
• E-dr (Insufficient incident light level error) - Insufficient light. Remedy: Delay response time, adjust distance. Ensure light reception is within limits.
• E-brt (Incident light level saturation error) - Saturated light. Remedy: Avoid regular reflected light. Ensure light reception is within limits.
• E-our (Measurement out-of-range error) - Value outside measurement range. Remedy: Set distance within measurement range.

6 Ratings and Specifications

Table Description: Lists specifications for various OMRON ZX1-LD models (NPN/PNP, code-draw/connector-joint types).

7 Maintenance: Troubleshooting

Troubleshooting for non-permanent hardware errors:

• No digital display / Display is blank: Check Eco function (turn OFF), wiring, power supply.
• Sensor restarts during operation: Check wiring, power supply.
• Laser is not emitted: Check LD OFF input, wiring.
• Input signal not received: Check wiring, connections.
• Measured value not stable: Consider temperature characteristics. Perform warming up (30 min), periodic zero reset.
• [E-dr] appears: Check installation environment, emitter/receiver surface for obstruction.
• OUT1/OUT2 indicators blink: Check for mutual interference with other sensors, adjust installation environment.
• OUT1/OUT2 indicators stay ON outside measurement range: Check Keep function setting.
• Abnormal distance detected outside range: Check measurement distance. Set Background Suppression function ON and perform smart tuning.
• Want to reset to initial setting: Reset settings via [MODE] button.

Suitability for Use

OMRON Companies are not responsible for conformity with standards, codes, or regulations for Buyer's application or use of the Product. Buyer is solely responsible for determining the appropriateness of the Product for their application. NEVER USE THE PRODUCT FOR APPLICATIONS INVOLVING SERIOUS RISK TO LIFE OR PROPERTY WITHOUT ENSURING THE SYSTEM AS A WHOLE HAS BEEN DESIGNED TO ADDRESS RISKS AND THE OMRON PRODUCT IS PROPERLY RATED AND INSTALLED.

Contact Information

OMRON Corporation Industrial Automation Company

Contact: www.ia.omron.com

Customer Support Center:

• Toll-free: 0120-919-066
• Phone: 055-982-5015 (charges apply)
• Hours: 8:00-21:00, 365 days
• FAX: 055-982-5051 / www.fa.omron.co.jp

For pricing, delivery, samples, and specifications, consult your OMRON sales representative or distributor.