Name: Panasonic EX-28A-PN Ultra-Compact Photoelectric Sensor - INOSAKI
SKU: Pananonic-EX-28A-PN
Price: 72.00 USD
Availability: InStock

Technical Overview

Ultra-compact reflective photoelectric sensor with 45-115mm range, 12-24VDC, PNP output, 0.5ms response, and IP67 rating for demanding industrial detection.

Key Features

Narrow view reflective and long-distance spot beam sensing with side detection capability
Sensing range of 45 to 115 mm
Operates on a supply voltage of 12 to 24 V DC
Fast response time of 0.5 ms or less
IP67 ingress protection rating for harsh environments
Wide operating temperature range from -25 to 55 °C
Compact block body style with 2m cable connection
Features a Red LED light source and an Orange LED operation indicator
Constructed with a polyethylene terephthalate enclosure and polyalylate lens
Equipped with reverse supply polarity, reverse output polarity, and output short-circuit protection circuits
Conforms to UL, CE, Korean S Mark, EMC Directive, and RoHS standards

Technical Specification Matrix

Parameter	Value
Series	EX-20
Sensing Method	Reflective, Diffuse (Narrow View, Long Distance Spot Beam, Side Sensing)
Sensing Range	45 to 115 mm
Output Type	PNP Open Collector
Supply Voltage	12 to 24 V DC
Max Operating Current	50 mA
Response Time	0.5 ms (500µs)
Indicator Type	Orange LED (lights up when output is ON)
IP Rating	IP67
Operating Temperature Range	-25 to 55 °C
Relative Humidity	35 to 85 %
Connection Method	Cable
Cable Length	2 m (78.74")
Enclosure Material	Polyethylene Terephthalate
Lens Material	Polyalylate
Light Source	Red LED (650 nm peak emission wavelength)
Standards Met	UL, CE, Korean S Mark, EMC Directive, RoHS
Physical Weight (kg)	0.02
Dimensions L x W x H (cm)	2.5 x 0.82 x 1.23

Industrial Applications

1. Automated Assembly Line Part Detection

This sensor can reliably detect small to medium-sized components moving on a conveyor belt or within an assembly jig. Its narrow view and reflective sensing method make it suitable for precise positioning verification and presence detection in automated manufacturing.

Problem Solved

Ensures accurate component feeding and placement in high-speed assembly, preventing jams or errors due to missing parts. The fast response time (0.5 ms) is crucial for maintaining throughput on rapid production lines.

Reflective sensingPart presenceObject detectionHigh-speed assembly12-24V DCPNP outputCompact

2. Packaging Machine Product Counting/Verification

In a packaging environment, this compact sensor can be mounted in tight spaces to accurately count products as they enter a package or verify that a specific number of items are present before sealing. Its IP67 rating protects it from dust and occasional moisture.

Problem Solved

Guarantees correct product quantity per package, reducing waste and improving quality control. The robust IP67 rating ensures longevity and reliable operation in typical industrial packaging conditions.

Product countingPackage verificationIP67Compact sizePNP output45-115mm sensing

3. Robotic Gripper Object Detection

Integrated into robotic grippers, the EX-28A-PN can detect the presence of an object before gripping, ensuring proper engagement and preventing damage to delicate items or the gripper itself. Its ultra-compact size is ideal for minimizing bulk on robotic end-effectors.

Problem Solved

Enables intelligent gripping operations, confirming an object is within reach and correctly positioned for pickup, thereby enhancing robotic precision and operational safety. The small dimensions are critical for maintaining the robot's dexterity in tight spaces.

Robotic automationObject grippingPresence detectionCompactSide sensing12-24V DC