Maintenance teams planning replacements for E3Z-LS81-UL-2M frequently review Omron SMPS 24V 10A, E3Z D61 2M and Omron Sensors to prevent downtime, checking availability and compatibility with existing systems.
Omron E3Z-LS81-UL 2M Photoelectric Sensor
The Omron E3Z-LS81-UL 2M Photoelectric Sensor offers Distance-settable, 20 to 200 mm (BGS setting) Sensing distance, PNP Output, Pre-wired 2 M cable, Red LED (670 nm), 12 to 24 VDC, Class 2, Light-ON/Dark-ON selectable mode. Manufactured by Omron under the Omron Photoelectric Sensors category, this model belongs to the Omron E3Z Series.
| Brand | Omron |
| Product Type | Photoelectric Sensor |
| Model Number | E3Z-LS81-UL 2M |
Omron E3Z-LS81-UL 2M Photoelectric Sensor β Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Distance-settable |
| Sensing Distance | 20 to 200 mm (BGS setting) |
| Light Source | Red LED (670 nm) |
| Power Supply Voltage | 12 to 24 VDC, Class 2 |
| Output configuration | PNP |
| Connection Method | Pre-wired 2 M cable |
| Current Consumption | 30 mA max. |
| Control Output | Load power supply voltage: 26.4 VDC max., Load current: 100 mA max. (residual voltage 1 V max.), Open collector output (NPN or PNP depending on model) |
| Operation Mode | Light-ON/Dark-ON selectable |
| Response Time | Operate or reset: 1 ms max. |
| Sensitivity Adjustment | 5-turn endless adjuster |
| Indicators | Operation indicator (orange), Stability indicator (green) |
| Ambient Illumination | Incandescent lamp: 3,000 lx max.; Sunlight: 10,000 lx max. |
| Ambient Temperature Range | Operating: β25 to 55Β°C, Storage: β40 to 70Β°C (with no icing or condensation) |
| Ambient Humidity Range | Operating: 35% to 85%, Storage: 35% to 95% (with no condensation) |
| Insulation Resistance | 20 MΞ© min. at 500 VDC |
| Dielectric Strength | 1,000 VAC at 50/60 Hz for 1 minute |
| Vibration Resistance | Destruction: 10 to 55 Hz, 1.5-mm double amplitude for 2 hours each in X, Y, and Z directions |
| Shock Resistance | Destruction: 500 m/s2 for 3 times each in X, Y, and Z directions |
| Protection Circuits | Reversed power supply polarity protection, Output short-circuit protection, Mutual interference prevention |
| Degree of Protection | IP67 (IEC 60529) |
| Weight | Approx. 65 g |
The Omron E3Z-LS81-UL 2M is a compact, distance-settable photoelectric sensor designed for precision object detection within short to medium ranges. It features a red LED light source (670 nm) and supports background suppression (BGS) for stable performance across varying target surfaces. The sensing range is adjustable from 20 mm to 200 mm, with a minimum threshold setting of 20 to 40 mm, making it suitable for parts detection, label sensing, and position verification in fast-moving industrial environments.
This model is equipped with a PNP open collector output and operates on a 12 to 24 VDC power supply ( ripple, Class 2). It consumes only 30 mA max. and supports load voltages up to 26.4 VDC with a current capacity of 100 mA. The fast 1 ms response time ensures compatibility with high-speed automation systems, while the Light-ON/Dark-ON selectable mode provides flexibility for various logic configurations.
The E3Z-LS81-UL 2M includes a 5-turn endless sensitivity adjuster that allows fine-tuning of detection distance and stability, optimizing performance in reflective, low-contrast, or complex backgrounds. It features dual LED indicatorsβan orange operation light and a green stability lightβfor quick visual feedback during setup and diagnostics.
Built to withstand tough industrial environments, the sensor is IP67-rated per IEC 60529, providing protection against dust ingress and water splashes. It operates reliably in temperatures ranging from β25Β°C to 55Β°C and in ambient humidity from 35% to 85%. It also resists ambient light interference up to 10,000 lx (sunlight) and 3,000 lx (incandescent lamps).
With rugged construction, the sensor withstands vibration (10β55 Hz, 1.5 mm double amplitude) and shock (500 m/sΒ²) in all axes. It is protected by reverse polarity, output short-circuit, and mutual interference prevention circuits, ensuring safe and consistent operation in multi-sensor installations.
The Omron E3Z-LS81-UL 2M comes pre-wired with a 2-meter cable.
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