Omron E3Z-LS61 Distance-settable Photoelectric Sensor
Omron E3Z-LS61 2M is a distance-settable photoelectric sensor designed to detect objects while reducing background interference in industrial automation systems. It uses background suppression technology with an adjustable sensing distance of 20 to 200 mm. The sensor features an NPN transistor output, red LED light source at 670 nm, and selectable Light-ON/Dark-ON operation. Operating from 12 to 24 VDC, it provides a maximum response time of 1 ms. Its rectangular PBT housing offers IP67 protection, while the 2 m pre-wired cable provides electrical connectivity. The E3Z LS61 belongs to the E3Z series of Background Suppression Photoelectric Sensors used in automated machinery. Omron Industrial Sensing Products support object detection in packaging and conveyor systems.
| Brand | Omron |
| Product | Photoelectric Sensor |
| Model Number | E3Z-LS61 2M |
Omron E3Z-LS61 Distance-settable Photoelectric Sensor – Technical Overview
| Specification | Value |
|---|---|
| Sensing Method | Background suppression (distance-settable) |
| Sensing Distance | 20 to 200 mm |
| Output | NPN |
| Connection Method | Pre-wired Cable, 2 m Length |
| Operation Mode | Light-ON / Dark-ON |
| Light Source | Red LED (670 nm) |
| Response Time | 1 ms max. |
| Power Supply | 12 to 24 VDC |
| Degree of Protection | IP67 |
| Material | PBT (polybutylene terephthalate) |
The Omron E3Z-LS61 2M photoelectric sensor uses distance-settable background suppression technology to detect objects within a specified 20 to 200 mm sensing range. Unlike conventional diffuse-reflective sensors that primarily respond to reflected light intensity, this model is designed to distinguish targets according to the selected detection distance, helping reduce unwanted detection of objects behind the target. The Omron E3Z LS61 incorporates a 670 nm red LED light source and an NPN transistor output for compatible industrial control inputs. Selectable Light-ON and Dark-ON modes determine the output response, while its maximum 1 ms response time supports object presence monitoring in packaging machines, conveyor systems, and assembly equipment.
Its compact rectangular PBT housing provides IP67 enclosure protection, while the pre-wired 2 m cable supports electrical connection to compatible control circuits. Operating from a 12 to 24 VDC supply, the sensor allows the detection distance to be adjusted according to the target position and surrounding background. For applications requiring a PNP transistor output with the same 20 to 200 mm distance-setting range, an alternative output configuration within the E3Z series is available in the E3Z-LS81 2M.
Industrial applications include detecting components against nearby machine surfaces, confirming product presence at assembly stations, and monitoring objects on automated production lines. Background suppression is particularly useful when equipment surfaces are positioned behind the intended detection point. The E3Z-LS61 is intended for shorter-distance detection where the background must be considered. Target reflectivity, distance adjustment, output compatibility, and operating mode influence the detection performance. For conventional diffuse-reflective sensing over a longer distance, a 1 m sensing range with an NPN output and infrared LED light source is available in the E3Z-D62 2M.