Product Description

The Keyence PZ-V31 is a compact, built-in amplifier photoelectric sensor designed for precise detection of both transparent and opaque objects in industrial automation systems. This square-shaped, reflective sensor utilizes a red LED light source and achieves a detection distance ranging from 5 to 300 mm when using a 100 x 100 mm white matte paper target. It features automatic push-button sensitivity adjustment and offers selectable LIGHT-ON/DARK-ON operation modes. The sensor is equipped with an NPN output capable of sourcing up to 100 mA, with a residual voltage of 1 V or less. Housed in a glass-fiber reinforced plastic casing, it boasts an IP67 enclosure rating, ensuring reliable performance in harsh environments. With a response time of 1 ms and a current consumption of 37 mA or less, the PZ-V31 is an efficient choice for high-speed detection applications. Please note that this model has been discontinued, and the recommended replacement is the PZ-G31.​

Technical Specifications

• Model: PZ-V31
• Type: Reflective photoelectric sensor
• Detection Distance: 5 to 300 mm (with 100 x 100 mm white matte paper)
• Setting Distance: 40 to 300 mm (with 100 x 100 mm white matte paper)
• Light Source: Red LED
• Sensitivity Adjustment: Automatic push button
• Response Time: 1 ms maximum
• Operation Mode: LIGHT-ON/DARK-ON (switch-selectable)
• Control Output: NPN, 100 mA max. (24 V), residual voltage: 1 V max.
• Power Supply Voltage: 12 to 24 VDC ±10%, ripple (P-P) 10% or less
• Current Consumption: 37 mA or less
• Digital Monitor: 7-segment, 3-digit red LED
• Enclosure Rating: IP67
• Ambient Light Resistance: Incandescent lamp: 5,000 lux max., sunlight: 20,000 lux max.
• Ambient Temperature Range: -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
• Housing Material: Glass-fiber reinforced plastic
• Weight: Approx. 55 g (including 2-meter cable)​