Product Description

The Keyence PZ-M31P is a compact, built-in amplifier photoelectric sensor designed for precise object detection in industrial automation systems. Featuring a square reflective cable type with a PNP output, it utilizes a red LED light source to detect objects within a range of 5 to 300 mm, based on a 100 x 100 mm white matte paper target. The sensor offers a fast response time of 1 ms and is equipped with a 1-turn trimmer for sensitivity adjustment over a 230° range. Its operation mode is switch-selectable between LIGHT-ON and DARK-ON, providing flexibility for various applications. With an IP67 enclosure rating, the PZ-M31P ensures reliable performance in harsh environments, including resistance to dust and water ingress. This sensor is ideal for applications requiring precise and reliable object detection in compact spaces.​

Technical Specifications

• Model: PZ-M31P
• Type: Intelligent reflective
• Output: PNP
• Detecting Distance: 5 to 300 mm (100 x 100 mm white matte paper)
• Setting Distance: 40 to 300 mm (100 x 100 mm white matte paper)
• Light Source: Red LED
• Sensitivity Adjustment: 1-turn trimmer (230°)
• Response Time: 1 ms max.
• Operation Mode: LIGHT-ON/DARK-ON (switch-selectable)
• Control Output: 100 mA (24 V) max., Residual voltage: 1 V max.
• Protection Circuit: Reversed polarity, overcurrent protection, surge absorber
• Power Supply Voltage: 12 to 24 VDC ±10 %, Ripple (P-P) 10 % or less
• Power Consumption: 30 mA max.
• Environmental Resistance:
• Enclosure Rating: IP67
• Ambient Light:
• Incandescent lamp: 5,000 lux max.
• Sunlight: 20,000 lux max.
• Ambient Temperature: -20 to +55 °C (No freezing)
• Relative Humidity: 35 to 85 % RH (No condensation)
• Vibration Resistance: 10 to 55 Hz, Double amplitude 1.5 mm, 2 hours in each of the X, Y, and Z directions
• Shock Resistance: 1,000 m/s², 6 times in each of the X, Y, and Z directions
• Case Material: Glass-fiber reinforced plastic
• Weight: Approx. 55 g (including 2-m cable)​