Omron E3FA-RN21 NPN 0.1 to 4 m with E39-R1S Photoelectric Sensor

USD 43.61

Omron E3FA-RN21: retro-reflective with msr, 0.1 to 4 m with E39-R1S, NPN output, M12 connector.

SKU Omron-E3FA-RN21 Category
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Omron E3FA-RN21 M18 Retro-reflective with MSR Photoelectric Sensor

BrandOmron
Model IdentifierE3FA-RN21
Official Part NumberE3FA-RN21

Technical Overview

The Omron E3FA-RN21 is an E3FA retro-reflective with msr photoelectric sensor with a nominal sensing distance of 0.1 to 4 m with E39-R1S. This M12 connector model uses Red LED, 624 nm and NPN open-collector output; the through-beam version is a matched emitter and receiver set. Omron specifies 10–30 VDC, 0.5 ms response and IP67/IP69K protection. E39-R1S reflector required and ordered separately Confirm target characteristics and controller compatibility for the installation.

M18 Omron E3FA retro-reflective with msr sensor with 0.1 to 4 m with E39-R1S range, NPN output and M12 connection.

Key Features

  • Retro-reflective with MSR
  • 0.1 to 4 m with E39-R1S nominal sensing distance
  • Red LED, 624 nm
  • NPN open-collector output
  • M12 connector
  • 10 to 30 VDC supply
  • 0.5 ms response
  • IP67/IP69K protection
  • E39-R1S reflector required and ordered separately

Retro-reflective with MSR | 0.1 to 4 m with E39-R1S | NPN | M12 connector

Technical Specification Matrix

ParameterValue
ManufacturerOmron
SeriesE3FA
Product typeM18 photoelectric sensor
Sensing methodRetro-reflective with MSR
Sensing distance0.1 to 4 m with E39-R1S
OutputNPN open collector
ConnectionM12 connector
Housing materialABS plastic
Light sourceRed LED, 624 nm
Operation modeLight-ON / Dark-ON selectable by wiring
Response time0.5 ms
Rated supply voltage10 to 30 VDC
Maximum load current100 mA
Degree of protectionIP67/IP69K
Sensor-only weightApprox. 10 g
Required reflectorE39-R1S reflector required and ordered separately
Physical Weight (kg)Not stated in the checked manufacturer product data.
Dimensions L x W x H (cm)See manufacturer dimensional data; no complete overall L × W × H value stated.
Supply statusUnknown; exact specifications are confirmed, current supply status was not established.

Suggested applications

Engineering suggestions require suitability checks for your installation.

1. Conveyor presence detection

Detect products as they pass a machine or conveyor sensing point.

Potential use

Position the retro-reflective with msr sensor within its rated 0.1 to 4 m with E39-R1S range and connect the NPN output to a compatible input.

conveyor presence detection

2. Part counting and sequence confirmation

Provide a photoelectric switching point for counting or sequence confirmation in an automated station.

Potential use

Use the M12 connector and red led, 624 nm configuration; verify any specified reflector and set Light-ON or Dark-ON logic by wiring.

part counting machine automation
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