E3S-CT66-D

Overview of Omron E3S-CT66-D

The Omron E3S-CT66-D is a rugged, long-distance photoelectric sensor designed for industrial use. It is a receiver unit (part of a through-beam sensor pair) that supports detection distances of up to 30 meters with opaque materials. The sensor features selectable NPN or PNP output types (open collector), with adjustable sensitivity and built-in protection against output short circuits and reversed polarity. The sensor is rated IP67, offering dust-tight and water-resistant durability for harsh environments.

Key Features

• Type: Photoelectric Sensor (Receiver unit)
• Mounting: M4 screw holes, compact size
• Detection Method: Through-beam (with emitter)
• Sensing Distance: Up to 30 m (opaque objects)
• Output Type: NPN or PNP open-collector selectable
• Power Supply Voltage: 10 to 30 VDC
• Response Time: ON 1 ms max, OFF 1 ms max with NPN output, 2 ms max for PNP
• Control Output Current: Max 100 mA
• Indicators: Red LED for light ON, Green LED for stability indicator
• Protection: IP67, NEMA 4X, 6P rated
• Operating Temperature: -25°C to 55°C
• Cable Length: 2 m prewired cable
• Adjustable Sensitivity: 3/4 turn knob with indicator

Technical Specifications

Applications

This sensor is ideal for factory automation, packaging machinery, conveyor systems, and other industrial applications requiring reliable long-distance object detection with rugged environmental protection.