Technical Overview
The Omron E3Z-LR81 2M is a compact laser photoelectric sensor using laser retro-reflective with msr function. Its manufacturer-rated sensing performance is 15 m with E39-R1 reflector (minimum sensor-to-reflector distance 300 mm); this exact variant has PNP open collector and a 2 m pre-wired cable. It uses a 655 nm Class 1 red laser, operates from 12–24 V DC ±10%, and is rated IP67 for industrial installations. Supply status is recorded as Unknown because current supply was not established.
Laser retro-reflective with MSR function; 15 m with E39-R1 reflector (minimum sensor-to-reflector distance 300 mm); PNP output, 2 m pre-wired cable, 12–24 V DC, IP67.
Key Features
- Exact manufacturer model: E3Z-LR81 2M
- Laser retro-reflective with MSR function
- Sensing performance: 15 m with E39-R1 reflector (minimum sensor-to-reflector distance 300 mm)
- Red laser diode, 655 nm, Class 1; reflector required (sold separately)
- PNP open collector; 100 mA max. load current
- 2 m pre-wired cable connection
- 12–24 V DC ±10%; current consumption 30 mA max.
- Response time: 1 ms max.; selectable Light-ON / Dark-ON
- IP67 enclosure; PBT case; Unknown current supply status
Class 1 laser sensing with 15 m with E39-R1 reflector (minimum sensor-to-reflector distance 300 mm) capability and IP67 protection.
Technical Specification Matrix
| Parameter | Value |
|---|
| Product type | Laser retro-reflective with MSR function |
| Sensing method | Laser retro-reflective with MSR function |
| Sensing distance | 15 m with E39-R1 reflector (minimum sensor-to-reflector distance 300 mm) |
| Light source | Red laser diode, 655 nm, Class 1; reflector required (sold separately) |
| Laser safety class | Class 1 (JIS, IEC/EN, FDA, GB/T) |
| Output | PNP open collector; open collector; 100 mA max.; 26.4 V DC max. load supply |
| Response time | 1 ms max. |
| Operation mode | Selectable Light-ON / Dark-ON |
| Power supply | 12–24 V DC ±10%; 10% max. peak-to-peak ripple |
| Current consumption | 30 mA max. |
| Connection | 2 m pre-wired cable |
| Operating temperature | −10 to 55 °C (no icing or condensation) |
| Storage temperature | −25 to 70 °C (no icing or condensation) |
| Relative humidity | Operating 35–85%; storage 35–95% (no condensation) |
| IP rating | IP67 (IEC 60529) |
| Housing material | PBT case; lens material varies by sensing family |
| Physical Weight (kg) | 0.065 kg (approx., packed state) |
| Dimensions L x W x H (cm) | Approx. 3.1 × 1.2 × 2.54 cm; see manufacturer drawing for orientation |
Suggested applications
Engineering suggestions require suitability checks for your installation.
1. Conveyor object detection
Detect and count passing items using laser retro-reflective with msr function in a machine or conveyor station.
Potential use
The 15 m with E39-R1 reflector (minimum sensor-to-reflector distance 300 mm) rating provides a basis for layout; validate alignment, target properties, sensing margin and reflector requirements at the installation.
LR
15 m with E39-R1 reflector (minimum sensor-to-reflector distance 300 mm)
PNP
IP67
2. Machine station presence sensing
Monitor part presence or passage at a guarded packaging or assembly station.
Potential use
Use the selectable Light-ON / Dark-ON output and 2 m pre-wired cable; confirm wiring, target geometry and environmental suitability during commissioning.
Class 1 laser
2 m pre-wired cable
12–24 V DC
1 ms max.
