OMRON ZX1-LD50 (01) PDF Document

The OMRON ZX1-LD50 uses a laser as its light source. Lasers are classified based on EN standard (EN 60825-1). The following are critical safety warnings:

WARNING:

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

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

The following precautions must be observed 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 tightened securely.

• Tightening torque: M3, 0.5N·m (ZX1-LD50/ZX1-LD100) or 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.

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-XCR 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.

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 warming 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.

The package content for the OMRON ZX1-LD50 includes:

• Sensor: 1

• Instruction sheet (this sheet): 1 each (Japanese and English)

• FDA Certification label: 1

• Laser Warning Label: 1 each (Japanese and English)

(The explanatory labels are attached to ZX1-LDL instead of the warning explanation labels.)

For optimal performance, follow these guidelines when mounting the OMRON ZX1-LD50:

• Detection Near a Wall Surface: Mount the sensor so it is less influenced by ambient lighting. Avoid mounting positions where the sensor is easily influenced by ambient lighting, which may cause detection value variations.

• Cavity Detection: Detection is not possible if the emitter or receiver section is blocked. Ensure a clear line of sight.

• Detection of Workpiece with Level Difference: Stable detection is possible regardless of level difference. However, a significant level difference may cause an abnormal detection value. Before performing tuning, apply mat paint on the wall surface or turn ON the background suppression function to avoid laser light reflection.

To mount the OMRON ZX1-LD50, use M3 screws with a tightening torque of 0.5 N·m.

For the ZX1-LD300 and ZX1-LD600 models, use M4 screws with a tightening torque of 1.2 N·m.

Important: Do not touch the sensor emitter and receiver sections. Correct detection may not be possible if fingerprints are attached to these areas. If you inadvertently touch the areas, wipe them using a soft, clean cloth.

The individual wire colors and roles are the same for both pre-wired and connector joint models. Unused wires must be insulated. Incorrect wiring may result in damage to the Sensor.

Here are the functions of the various components on the OMRON ZX1-LD50’s display and control panel:

• [MENU] Menu Indicator (Orange): Turns ON in MENU setting mode.

• [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.

• [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.

• [UP] button: Used to change a threshold value or select a setting item.

• [DOWN] button: Used to change a threshold value or select a setting item.

• [TUNE] button: Used to perform tuning.

• [MODE] button: Switches between Measurement mode and MENU setting mode by holding it for 3 seconds or longer. Switches to CH Setting mode when it is pressed for less than 3 seconds.

• Digital display: Displays the displacement volume in Measurement mode and setting items/values in other modes.

Follow these steps to enter CH Setting Mode and switch channels:

1. Briefly press the MODE button in Measurement mode.

2. The channel display changes in the sequence CH-1 -> CH-2 by pressing the UP/DOWN button. If Area Output is ON, the sequence will be CH1H -> CH1L -> CH2H -> CH2L.

3. Press the MODE button to return to measurement mode.

2-point tuning is used to distinguish between two objects with different heights from the Sensor (e.g., OK and NG, workpiece and background, or workpieces A and B).

1. Press the TUNE button (within 1 sec.) once without a workpiece. The display changes [tunE] -> [t-P1] -> [Pnt 2].

2. Lightly press the TUNE button once again with a workpiece. The display changes [tunE] -> [Pnt 2], and 2-point tuning is completed. The measured value display returns.

Note: The order of presenting the workpiece does not matter.

1-point tuning is used to judge the presence/absence of a workpiece by referring to a pre-determined background (reference surface).

1. Hold the TUNE button (minimum 3 and less than 5 seconds) until [tunE] blinks without a workpiece.

2. When [tunE] starts blinking, release the TUNE button. The display changes [tunE] -> [t-P1] and 1-point tuning is completed. The measured value display returns.

This method is used to judge if a workpiece is within a specified range using upper and lower limit workpieces.

1. In the menu setting mode, select “ON” for the area output item to return to measurement mode.

2. Set the workpiece at the desired upper limit and lightly press the TUNE button. The display changes [tunE] -> [t-P1] -> [Pnt 2].

3. Set the workpiece at the desired lower limit and lightly press the TUNE button. The display changes [tunE] -> [Pnt 2] and 2-point tuning is completed. The measured value display returns.

Note: The order of presenting the workpieces (upper/lower limit) does not matter.

This method assigns upper and lower limits to a single actual workpiece to judge if subsequent workpieces are within that range.

1. In the menu setting mode, set the AREA item to “ON” and return to the measured value display.

2. Hold the TUNE button (3 to less than 5 seconds) with a workpiece on the reference surface until [tunE] blinks.

3. When [tunE] starts blinking on the display, release the TUNE button. The display changes [tunE] -> [t-P1] and 1-point area tuning is completed. The measured value display returns.

Note: To set plus and minus threshold values using “0” as the background, use the zero reset function first to reset the distance to “0”, then perform 1-point area tuning.

If standard tuning methods fail, you can use “Tuning mode without Workpiece”. This is useful when insufficient light level or outside-range errors caused by complicated workpiece appearance occur.

1. Hold the TUNE button (5 sec. or longer) until [tunE] blinks rapidly without a workpiece.

2. When [tunE] in the display starts blinking rapidly, release the TUNE button. The tuning is completed.

• Area Output is OFF: Used to judge the presence/absence of a workpiece using the pre-determined background. This method focuses on detecting the absence of a workpiece, judging errors as “presence of the workpiece”.

• Area Output is ON: Used to assign upper and lower limits to the distance from the reference surface and judge if a workpiece is within range. This method focuses on detecting the absence of a workpiece, judging errors as “presence of the workpiece”.

To loosen or tighten the ON/OFF switching conditions, use the UP and DOWN buttons for minute adjustment of the threshold values.

• Press the UP button to increase the threshold.

• Press the DOWN button to decrease the threshold.

Note: The OUT1 indicator keeps blinking while “Threshold 1/ Threshold 1H/ Threshold 1L” is being changed. The OUT2 indicator keeps blinking while “Threshold 2/ Threshold 2H/ Threshold 2L” is being changed.

A minute step can be judged by adjusting the hysteresis width according to the workpiece. Lowering the hysteresis width may cause the judgment output to vary if the displacement value is varying due to a moving workpiece or low reflection light intensity.

What is Hysteresis Width?

Hysteresis is the difference between the operating point (where the output turns from OFF to ON) and the return point (where the output turns from ON to OFF). On this sensor, the threshold is the operating point, and you can set the distance to the return point based on the hysteresis width.

Zero Reset

This function resets the present distance value to “0”.

1. Simultaneously press the UP/DOWN and TUNE buttons once for a short time. The present value changes to “0”, and the zero reset is completed. The zero reset indicator turns ON.

Alternatively, a zero reset can be performed by turning the zero reset external input terminal ON for 4 ms or longer and less than 3 seconds.

Zero Reset Cancel

1. To cancel the zero reset function, simultaneously press the UP/DOWN and TUNE buttons for at least 3 seconds. The zero reset indicator will turn OFF.

Alternatively, a zero reset can be cancelled by turning the zero reset external input terminal ON for 3 seconds or longer.

The Key Lock function disables button operations in Measurement mode to prevent accidental changes.

Key Lock Function

1. Simultaneously press the UP/DOWN and MODE buttons for at least 3 seconds. The display shows [LOC].

Key Lock Cancel

1. To unlock the key operation, simultaneously press the UP/DOWN and MODE buttons for at least 3 seconds.

Note: The key lock state is retained even after the power is turned OFF and ON again.

1. To enter the Menu Setting mode, hold the MODE button for at least 3 seconds.

2. Press the MODE button from an item setting to move to the next item menu.

3. Use the UP/DOWN buttons to change the setting value for the selected item.

The available function settings include:

• Output Polarity [PoL]

• Tuning Type [tunE]

• Response Time [SPd]

• Keep Function [YEEP]

• Scaling Function [SCAL]

• Background Suppression Function [SArt]

• Hysteresis width [HYS]

• Timer Function [tinEr]

• Area Output [ArEA]

• Zero Reset Memory [Sr]

• Eco Function [Eco]

• Setting Reset [rSEt]

Note: If the key lock is engaged, the display will show [Loc] and the Setting mode cannot be entered.

To reset all settings to the factory default settings:

1. Enter the Menu Setting mode by holding the MODE button for 3 seconds.

2. Navigate to the “Setting Reset” function, displayed as [rSEt].

3. Use the UP/DOWN button to select [YES.P].

4. Press the MODE button while [YES.P] is shown to execute the setting reset.

The following table shows the error details and remedies displayed on the digital display of the OMRON ZX1-LD50.

The table below describes non-permanent hardware errors and their troubleshooting.