Providing precise distance-settable background suppression (BGS) in complex positioning setups, the Omron E3Z-LL81 photoelectric sensor uses a high-precision Class 1 red laser diode to achieve millimeter-level target detection. This sensor is engineered to ignore background objects beyond the set cutoff limit, delivering highly reliable object detection regardless of target color, gloss, or angle. With its ultra-concentrated 0.5-mm spot diameter at 300 mm, the device is ideal for electronic component verification, small parts detection, and high-speed automated packaging machinery.
| Parameter | Specification |
|---|---|
| Manufacturer | Omron |
| Model Number | E3Z-LL81 |
| Sensing Method | Distance-settable (BGS Models) |
| Sensing Distance (White Paper) | 20 to 300 mm (100 x 100 mm target) |
| Sensing Distance (Black Paper) | 20 to 160 mm (100 x 100 mm target) |
| Set Distance Range (White Paper) | 40 to 300 mm |
| Set Distance Range (Black Paper) | 40 to 160 mm |
| Light Source (Wavelength) | Red LD (655 nm), JIS Class 1, IEC Class 1, FDA Class 2 |
| Spot Diameter (Reference Value) | 0.5 mm dia. at 300 mm |
| Power Supply Voltage | 12 to 24 VDC +/-10%, ripple (p-p): 10% max. |
| Current Consumption | 30 mA max. |
| Control Output | PNP open collector, 26.4 VDC max., 100 mA max. load current |
| Shipping Weight (Calculated) | 1.00 kg (Includes protective factory packaging) |
| Package Dimensions (Calculated) | 150 x 100 x 50 mm |
| Wire Color | Function / Assignment |
|---|---|
| Brown | Power Supply (+V, 12 to 24 VDC) |
| Blue | Power Supply (0V / GND) |
| Black | Control Output (PNP Open Collector) |
| Pink | Control Input (Light-ON / Dark-ON Selection) |
The E3Z-LL81 features a PNP open collector output. If your control system requires an NPN configuration, use the E3Z-LL61 alternative model. Mounting dimensions and sensing ranges are identical across both models, allowing direct physical drop-in replacements during system integration or logic retrofits.
When deploying the sensor in environments with highly reflective metal or mirrored backgrounds situated near the sensing field, reflection off the background may bypass the BGS cutoff. To counteract this optical feedback, mount the sensor at an angle of 5 to 10 degrees relative to the target surface. Avoid placing the sensor in direct sunlight or facing heavy high-frequency discharge light sources, which can disrupt the receiver circuit.
To configure the output mode of the sensor, use the integrated Pink control wire. Connecting the Pink wire to the Brown wire (+V) configures the sensor for Dark-ON operation, whereas connecting it to the Blue wire (0V) or leaving it open configures it for Light-ON operation. Verify current limits prior to termination to prevent over-current damage to the internal PNP transistor.
Disconnect all power distribution sources prior to making electrical connections or mechanical adjustments. Do not look directly into the laser transmitter lens while the sensor is powered, as direct laser exposure can cause eye irritation or optical damage.
Securely mount the sensor using a compatible Omron L-bracket or direct machine frame mount, ensuring that the optical path to the target is clear of physical obstructions.
Wire the sensor according to the electrical schematic. Ensure the Pink wire is tied to the appropriate potential (+V or 0V) to define your required operation mode (Light-ON or Dark-ON).
Apply 12 to 24 VDC power and verify that the green stability indicator remains lit under non-sensing conditions, signifying healthy signal headroom.
Place the target object at the maximum desired detection distance and adjust the integrated multi-turn distance adjuster screw until the orange operation indicator illuminates.
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Returns & Warranty
Manufacturer: Omron
Product No.: E3Z-LL81
Country of origin:Japan
Product Type: Photoelectric Sensors
Payment: T/T, Western Union
Weight: 1000g
Dimensions: 150 x 100 x 50 mm
Shipping port: Xiamen
Warranty: 12 months
Providing precise distance-settable background suppression (BGS) in complex positioning setups, the Omron E3Z-LL81 photoelectric sensor uses a high-precision Class 1 red laser diode to achieve millimeter-level target detection. This sensor is engineered to ignore background objects beyond the set cutoff limit, delivering highly reliable object detection regardless of target color, gloss, or angle. With its ultra-concentrated 0.5-mm spot diameter at 300 mm, the device is ideal for electronic component verification, small parts detection, and high-speed automated packaging machinery.
| Parameter | Specification |
|---|---|
| Manufacturer | Omron |
| Model Number | E3Z-LL81 |
| Sensing Method | Distance-settable (BGS Models) |
| Sensing Distance (White Paper) | 20 to 300 mm (100 x 100 mm target) |
| Sensing Distance (Black Paper) | 20 to 160 mm (100 x 100 mm target) |
| Set Distance Range (White Paper) | 40 to 300 mm |
| Set Distance Range (Black Paper) | 40 to 160 mm |
| Light Source (Wavelength) | Red LD (655 nm), JIS Class 1, IEC Class 1, FDA Class 2 |
| Spot Diameter (Reference Value) | 0.5 mm dia. at 300 mm |
| Power Supply Voltage | 12 to 24 VDC +/-10%, ripple (p-p): 10% max. |
| Current Consumption | 30 mA max. |
| Control Output | PNP open collector, 26.4 VDC max., 100 mA max. load current |
| Shipping Weight (Calculated) | 1.00 kg (Includes protective factory packaging) |
| Package Dimensions (Calculated) | 150 x 100 x 50 mm |
| Wire Color | Function / Assignment |
|---|---|
| Brown | Power Supply (+V, 12 to 24 VDC) |
| Blue | Power Supply (0V / GND) |
| Black | Control Output (PNP Open Collector) |
| Pink | Control Input (Light-ON / Dark-ON Selection) |
The E3Z-LL81 features a PNP open collector output. If your control system requires an NPN configuration, use the E3Z-LL61 alternative model. Mounting dimensions and sensing ranges are identical across both models, allowing direct physical drop-in replacements during system integration or logic retrofits.
When deploying the sensor in environments with highly reflective metal or mirrored backgrounds situated near the sensing field, reflection off the background may bypass the BGS cutoff. To counteract this optical feedback, mount the sensor at an angle of 5 to 10 degrees relative to the target surface. Avoid placing the sensor in direct sunlight or facing heavy high-frequency discharge light sources, which can disrupt the receiver circuit.
To configure the output mode of the sensor, use the integrated Pink control wire. Connecting the Pink wire to the Brown wire (+V) configures the sensor for Dark-ON operation, whereas connecting it to the Blue wire (0V) or leaving it open configures it for Light-ON operation. Verify current limits prior to termination to prevent over-current damage to the internal PNP transistor.
Disconnect all power distribution sources prior to making electrical connections or mechanical adjustments. Do not look directly into the laser transmitter lens while the sensor is powered, as direct laser exposure can cause eye irritation or optical damage.
Securely mount the sensor using a compatible Omron L-bracket or direct machine frame mount, ensuring that the optical path to the target is clear of physical obstructions.
Wire the sensor according to the electrical schematic. Ensure the Pink wire is tied to the appropriate potential (+V or 0V) to define your required operation mode (Light-ON or Dark-ON).
Apply 12 to 24 VDC power and verify that the green stability indicator remains lit under non-sensing conditions, signifying healthy signal headroom.
Place the target object at the maximum desired detection distance and adjust the integrated multi-turn distance adjuster screw until the orange operation indicator illuminates.
Global Express Shipping
Returns & Warranty
Orders are processed and delivered Monday-Friday (excluding public holidays).
For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Country of origin |
Japan
|
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