Omron E3Z-LS61 2M Photoelectric Sensor
Omron E3Z-LS61 2M is a distance-settable photoelectric sensor using background suppression across a specified 20 to 200 mm sensing range. Its 670 nm red LED supplies the optical source, while the BGS principle helps separate the intended target from surfaces positioned beyond the selected sensing point. The NPN output communicates the switching state to compatible industrial control equipment, while Light-ON or Dark-ON operation can be selected according to the required logic. The sensor operates from 12 to 24 VDC and includes a 2 m pre-wired cable. Current consumption is specified at 30 mA maximum, response time at 1 ms maximum, and a one-turn adjuster supports sensitivity setting. Within the E3Z Series, the E3Z-LS61 2M provides adjustable NPN sensing within the BGS photoelectric sensor range across the Omron Sensor Range.

| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3Z-LS61 2M |
Omron E3Z-LS61 2M Photoelectric Sensor – 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 |
| Output Configuration | NPN |
| Connection Method | Pre Wired, Cable Length 2M |
| Current Consumption | 30 mA max. |
| Operation Mode | Light-ON/Dark-ON |
| Response Time | Operate or reset: 1 ms max |
| Sensitivity Adjustment | One-turn adjuster |
| Ambient Illumination | Incandescent lamp: 3,000 lx max.; Sunlight: 10,000 lx max. |
| Ambient Temperature Range | Operating: −25 to 55°C, Storage: −40 to 70°C (with no icing or condensation) |
| Ambient Humidity Range | Operating: 35% to 85%, Storage: 35% to 95% (with no condensation) |
| Insulation Resistance | 20 MΩ 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) |
| Material | PBT (polybutylene terephthalate) |
| Weight | Approx. 65 g |
The Omron E3Z-LS61 2M Photoelectric Sensor uses distance-settable sensing with a background-suppression setting across a specified 20 to 200 mm range. Its 670 nm red LED supplies the optical source, while the BGS principle helps separate the intended target from surfaces positioned beyond the selected sensing point. The NPN output communicates the switching state to compatible industrial control equipment, while Light-ON or Dark-ON operation can be selected according to the required logic. The sensor operates from 12 to 24 VDC and includes a 2 m pre-wired cable. Current consumption is specified at 30 mA maximum, operate or reset time is 1 ms maximum, and a one-turn adjuster supports setting. Ambient-light resistance reaches 3,000 lx under incandescent light and 10,000 lx under sunlight.
For an Omron background-suppression sensor requiring NPN output and a 20 to 200 mm adjustable working range, the applicable model is the E3Z-LS61. Operating temperature extends from -25 to 55°C, while storage covers -40 to 70°C without icing or condensation. Insulation resistance is specified at 20 MΩ minimum at 500 VDC, while dielectric strength is 1,000 VAC for one minute. Reverse supply polarity, output short-circuit, and mutual-interference protection are included. PBT is listed as the housing material. Its adjustable working area also suits searches for an Omron NPN BGS sensor and Omron 200 mm distance-settable sensor. For another E3Z-LS61 variant using a five-turn endless adjuster and 2 m pre-wired cable, see the E3Z-LS61-UL 2M.


