Product Description

The Keyence PZ-51L is a high-performance photoelectric sensor designed for precise object detection in industrial automation applications. Operating as a through-beam (thrubeam) model, it utilizes an infrared LED light source to detect objects within a specified range. This sensor features a built-in amplifier, simplifying installation and reducing wiring complexity. With a compact design and a 2-meter cable connection, it offers flexibility in various setups. The PZ-51L supports both LIGHT-ON and DARK-ON operation modes, selectable via a switch, and includes a 1-turn sensitivity adjustment trimmer for fine-tuning. Its robust design ensures reliable performance in harsh environments, with an enclosure rating of IP67, making it suitable for applications exposed to dust and water.

Technical Specifications

• Feature Specification
• Model PZ-51L
• Type Thrubeam model
• Light Source Infrared LED
• Detecting Distance 7 meters
• Detectable Object Opaque material with an area of 8 mm² or more
• Sensitivity Adjustment 1-turn trimmer (240°)
• Response Time 1.5 ms max.
• Operation Mode LIGHT-ON/DARK-ON (switch-selectable)
• Indicator Lamp Output and power: red LED; stable operation: green LED
• Control Output Maximum NPN open-collector output: 100 mA or less (40 V or less)
• Stability Output Maximum NPN open-collector output: 50 mA or less (40 V or less)
• Protection Circuit Reversed polarity, overcurrent protection, surge absorber
• Power Supply Voltage 12 to 24 VDC ±10 %, Ripple (P-P) 10 % or less
• Current Consumption Transmitter: 20 mA or less, Receiver: 25 mA or less
• Enclosure Rating IP67
• Ambient Light Resistance Incandescent lamp: 5,000 lux or less, Sunlight: 20,000 lux or less
• Ambient Temperature -20 to +55 °C (No freezing)
• Relative Humidity 35 to 85 % RH
• Vibration Resistance 10 to 55 Hz, Double amplitude 1.5 mm, 2 hours in each of the X, Y, and Z directions
• Case Material Fiberglass reinforced plastic
• Weight Transmitter: Approx. 60 g, Receiver: Approx. 70 g (including 2-m cable)