Name: Omron E3Z-R61 2M Photoelectric Retro-reflective Sensor - INOSAKI
SKU: Omron-E3Z-R61 2M
Price: 38.87 USD
Availability: InStock

Technical Overview

The Omron E3Z-R61 2M is a compact, retro-reflective photoelectric sensor designed for reliable industrial automation and detection tasks. Housed in a durable IP67-rated PBT cuboid casing, it operates effectively in harsh environments. This sensor features a polarized red LED light source (660 nm) and is equipped with a built-in amplifier and M.S.R. (Mirror Surface Rejection) function, allowing it to accurately detect shiny objects up to a 4-meter sensing distance. It provides an NPN open-collector output with selectable Light-ON/Dark-ON operation modes, a fast 1 ms response time, and includes a 2-meter pre-wired cable for convenient installation.

Key Features

Retro-reflectivesensingwithM.S.R.(MirrorSurfaceRejection)functionforstabledetectionofshinytargets[1.1].
Sensing distance of 100 mm to 4,000 mm using an E39-R1S reflector.
Fast 1 ms response time for high-speed industrial applications.
Selectable Light-ON / Dark-ON operation modes.
NPN open-collector output rated for 26.4 VDC max.
IP67-rated ingress protection with highly durable PBT polymer housing.
Pre-wired connection via a 2-meter cable with bare end flying leads.
Polarized red LED light source (660 nm) for easy optical axis alignment.

Technical Specification Matrix

Parameter	Value
Output Type	NPN [1.1]
Sensing Method	Retro-reflective with M.S.R. function
Sensing Distance	0.1 to 4 m (with reflector)
Supply Voltage	12 - 24 VDC
Light Source	Polarized Red LED (660 nm)
Response Time	1 ms
Connection Method	Pre-wired (2 m cable)
Degree of Protection	IP67
Operation Mode	Light-ON / Dark-ON (Selectable)
Dimensions	10.8 mm (W) x 31 mm (H) x 20 mm (D)
Current Consumption	30 mA max.
Housing Material	PBT (Polybutylene Terephthalate)
Ambient Temperature Range	-25 to 55 Degrees C

Industrial Applications

1. High-SpeedBottlingLineDetection

Detectingtransparentorshinybottles(suchasglassorPET)onafast-movingconveyorbelt.

Problem Solved

Standardphotoelectricsensorsoftenstruggletoaccuratelydetecthighlyreflectivesurfaceslikeglassorplasticbottles, whichcancausefalsetriggers.TheE3Z-R61utilizesitsbuilt-inM.S.R.(MirrorSurfaceRejection)functionandpolarizedredLEDtoensureshinytargetsdonotreflectlightdirectlybacktothereceiver[1.1]. Furthermore, the 1 ms response time guarantees precise detection even on the fastest high-speed bottling lines.

M.S.R. function [1.1]1 ms response timeRetro-reflectiveIP67 ratingPolarized red LED

2. Automated Material Handling and Wide Conveyor Monitoring

Monitoring the continuous presence of boxes or pallets across wide conveyor sections before automated robotic palletization.

Problem Solved

Industrial conveyors require optical sensors capable of shooting across wide spans to reliably confirm product presence. The E3Z-R61 provides an extended 4-meter sensing distance, easily bridging the width of most standard conveyor segments. Its robust PBT polymer housing and IP67 rating fully protect the internal electronics from dust, debris, and moisture commonly found in busy material handling facilities.

4 m sensing distance [1.1]PBT housingIP67 protectionNPN output12-24 VDC

3. Packaging Machinery and Shrink-Wrap Detection

Verifying the passage of cartons or shrink-wrapped goods through automated access gates in secondary packaging stations.

Problem Solved

In continuous packaging stations, sensors must detect irregularly shaped or shrink-wrapped objects whose glare can confuse standard optical sensors. By utilizing a polarized red LED light source, this sensor easily targets the corresponding reflector through transparent shrink wrap without being blinded by the plastic film's surface reflection. The selectable Light-ON/Dark-ON modes allow control engineers to easily integrate the sensor's NPN logic directly into existing PLC gating systems.

Polarized red LED [1.1]Light-ON/Dark-ON selectableNPN open-collectorShrink-wrap detection