Keyence PZ-G102N Diffuse Reflective Sensor

Product Introduction

The Keyence PZ-G102N belongs to the PZ-G series of built-in amplifier photoelectric sensors. Keyence designed this rectangular diffuse reflective model for reliable short-range detection in automated machinery. Specifically, the sensor detects targets from 5 mm to 45 mm with a red LED light source and an approximately 2 mm spot at 40 mm. Therefore, it fits presence checks, part positioning, and small-object sensing on packaging and assembly lines.

Additionally, the PZ-G102N provides a 500 µs maximum response time and a 1-turn trimmer for sensitivity adjustment. Users can select LIGHT-ON or DARK-ON operation through a switch. The NPN open collector output handles up to 30 V and 100 mA. Meanwhile, the glass-fiber reinforced PBT housing and acrylic lens cover resist daily industrial wear. Finally, the IP67/IP69K rating, wide temperature range, and 2 m cable make this sensor ready for demanding production environments.

Technical Specifications

Detection Performance

The PZ-G102N uses a red LED light source and works as a diffuse reflective or definite reflective sensor. Its detecting distance spans 5 to 45 mm (0.20 to 1.77 in). At a 40 mm detecting distance, the spot diameter measures approximately 2 mm. This small spot supports precise detection of narrow parts and edges. Moreover, the 500 µs maximum response time keeps pace with fast production cycles.

Electrical Characteristics

The sensor accepts a supply voltage of 10 to 30 VDC nominal, including ripple (P-P) 10%. Current consumption stays at 34 mA or less. The PZ-G102N delivers an NPN open collector output rated at 30 V maximum and 100 mA maximum. Residual voltage remains at 1 V maximum. Besides, built-in protection circuits cover reversed polarity, overcurrent, and surge absorption. Interference suppression supports up to 2 units through polarization filters or the automatic different frequency function.

Adjustment and Indicators

A 1-turn trimmer with 230° rotation allows sensitivity adjustment. The operation mode switch selects LIGHT-ON or DARK-ON. An orange LED indicates output status, while a green LED shows stable operation. These indicators help technicians confirm alignment and detection state during setup. Therefore, commissioning stays quick and straightforward.

Mechanical and Environmental Parameters

Housing and Mounting

The housing uses glass-fiber reinforced PBT, and the lens cover is acrylic (PMMA). The rectangular shape simplifies mounting on brackets and fixtures. Mounting torque must not exceed 0.5 N·m at the mounting hole part. The cable model weighs approximately 60 g. PZ-G102N dimensions (H×W×D) are not available in the source data. Please confirm the drawing with our sales team before final design work.

Environmental Ratings

The operating temperature range runs from -20 to +55 °C with no freezing. Relative humidity must stay between 35 and 85 % RH with no condensation. The protection rating covers IEC IP67, NEMA 4A, 6, 12, and DIN IP69K. Ambient light resistance reaches 5,000 lux maximum for incandescent lamps and 20,000 lux maximum for sunlight. Furthermore, vibration resistance covers 10 to 55 Hz with 1.5 mm double amplitude for 2 hours in each X, Y, Z direction. Shock resistance reaches 1,000 m/s², 6 times in each X, Y, Z direction.

Installation Guide

First, confirm the supply voltage and wiring polarity before powering the sensor. Connect the 2 m cable according to the NPN open collector output diagram. Next, mount the PZ-G102N on a stable bracket and tighten the mounting screw to no more than 0.5 N·m. Keep the sensing face clean and free of dust or oil film.

Then, set the operation mode switch to LIGHT-ON or DARK-ON as your control logic requires. Place a target at the working distance and rotate the 1-turn trimmer until the orange output LED responds reliably. Meanwhile, watch the green stable operation LED to confirm margin. Finally, test the sensor across the full 5 to 45 mm range and at production speed. For multi-unit installations, use the polarization filter option or the automatic different frequency function to limit interference to 2 units.

Packaging List

• 1 × Keyence PZ-G102N photoelectric sensor

• 1 × Mounting bracket set (as supplied)

• 1 × Installation and operation manual

• 1 × Protective carton packaging

Shipping: Fedex, UPS, DHL.

FAQ

Q1: What is the detecting range of the PZ-G102N?
A: The sensor detects targets from 5 to 45 mm (0.20 to 1.77 in). The spot diameter is about 2 mm at a 40 mm distance.

Q2: Does the PZ-G102N support both LIGHT-ON and DARK-ON modes?
A: Yes. A switch on the sensor selects LIGHT-ON or DARK-ON operation. The orange LED shows the output state.

Q3: What output type does this sensor provide?
A: It provides an NPN open collector output rated at 30 V and 100 mA maximum. Residual voltage is 1 V maximum.

Q4: Can I use the PZ-G102N in washdown areas?
A: The sensor carries IP67, NEMA 4A/6/12, and DIN IP69K ratings. It suits washdown and dusty areas when mounted correctly.

Q5: How many units can run side by side without interference?
A: Up to 2 units can operate together. Use polarization filters or the automatic different frequency function to suppress interference.