Name: Omron E2S-Q21 1M Super-Compact Inductive Proximity Sensor - INOSAKI
SKU: Omron-E2S-Q21 1M
Price: 33.59 USD
Availability: InStock

Technical Overview

The Omron E2S-Q21 1M is a super-compact, rectangular inductive proximity sensor designed for tight industrial spaces. It features a front-sensing unshielded design with a 2.5 mm nominal sensing distance and operates on a 2-wire DC system with a Normally Open (NO) output. Housed in a durable 8x8x23mm polyarylate resin body, it offers IP67 protection and a 1 kHz response frequency, making it ideal for high-speed, space-constrained automation applications.

Key Features

Super-compact 8x8x23mm rectangular block design [1.1]
2.5 mm nominal sensing distance, unshielded front sensing
DC 2-wire with Normally Open (NO) operating mode
High-speed 1 kHz response frequency
Polyarylate resin housing with IP67 protection rating
Pre-wired with a 1-meter cable

Technical Specification Matrix

Parameter	Value
Sensor Type	Inductive Proximity Sensor [1.1]
Sensing Distance	2.5 mm ±15%
Output Configuration	DC 2-wire, NO (Normally Open)
Supply Voltage	10 to 30 VDC
Response Frequency	1 kHz
Dimensions	8 mm x 8 mm x 23 mm
Degree of Protection	IP67
Operating Temperature	-25°C to +70°C
Housing Material	Polyarylate resin
Connection Method	Pre-wired, 1m cable

Industrial Applications

1. High-Speed Rotary Cam Detection in Packaging Machinery

Using the sensor to detect the position of metallic cams on high-speed rotating shafts in space-constrained packaging machines.

Problem Solved

Standard cylindrical sensors often cannot fit in dense machine heads. The E2S-Q21's miniature 8x8x23mm size fits into extremely tight clearances [1.1], while its 1 kHz switching frequency ensures precise detection of fast-moving cam lobes without signal drop.

1 kHz switching frequency8x8x23mm form factor2.5 mm sensing distanceInductive detection

2. Robotic End-Effector Gripper Jaw Position Verification

Mounting the proximity sensor directly onto a robotic gripper to verify that metallic jaws are fully opened or closed before moving.

Problem Solved

Adding sensors to robotic end-effectors increases payload and snag risks. The ultra-compact polyarylate resin body minimizes weight and footprint, and the pre-wired 1m cable allows easy routing. The IP67 rating ensures reliable operation in harsh environments.

IP67 protectionPolyarylate resin housingPre-wired 1m cableCompact rectangular design

3. Miniature Conveyor Pallet Tracking in Automated Assembly

Detecting the presence of small metallic workpiece carriers or pallets as they pass specific workstations on a micro-assembly conveyor.

Problem Solved

On micro-assembly lines, mounting hardware for traditional sensors disrupts the track design. The front-sensing 8x8mm face allows for flat, low-profile mounting alongside the conveyor belt. The 2-wire DC configuration simplifies wiring back to the PLC.

Front sensing2-wire DC configuration10-30 VDC supplyNormally Open (NO) output