Keyence PZ-G42EP Diffuse Reflective Sensor

Keyence PZ-G42EP Diffuse Reflective Sensor

Product Introduction

The Keyence PZ-G42EP belongs to the PZ-G series of built-in amplifier photoelectric sensors. Specifically, this model uses diffuse reflective sensing with a short-range design. It detects targets up to 300 mm away when using 10 × 10 cm white paper. Meanwhile, the red LED light source provides a clear and stable beam for daily detection tasks.

Additionally, the rectangular housing fits tight mounting spaces. The PZ-G42EP suits conveyor positioning, presence detection, and packaging line control. Furthermore, its M12 pigtail connector simplifies wiring during installation. Therefore, maintenance teams can replace units quickly with minimal downtime. Besides, the PNP output matches positive-common control systems common in European and Japanese machinery.

Technical Specifications

The sensor delivers a response time of 500 µs maximum. Besides, a 1-turn trimmer with 230° rotation allows simple sensitivity adjustment. Operators can switch between LIGHT-ON and DARK-ON modes as needed. The output uses a PNP open collector rated at 30 V and 100 mA maximum, with residual voltage of 1 V maximum.

For instance, the supply voltage ranges from 10 to 30 VDC nominal, including 10% ripple (P-P). Current consumption stays at 34 mA or less. Moreover, built-in protection covers reversed polarity, overcurrent, and surge events. Interference suppression supports up to 2 units through polarization filters or the automatic different frequency function.

Indicator LEDs help during setup and operation. Specifically, an orange LED shows output status, while a green LED confirms stable operation. The lens cover uses polyarylate (PAR) material for optical durability. In addition, the PNP output sinks current to ground when active, which suits many PLC input modules.

Mechanical and Environmental Parameters

The housing material is glass-fiber reinforced PBT for rugged use. The mounting torque should not exceed 0.5 N·m at the mounting hole. Meanwhile, the unit weighs approximately 30 g for the rectangular M12 pigtail model. The M12 pigtail connector provides a secure and detachable cable interface.

Environmental ratings are strong. The Keyence PZ-G42EP operates from -20 to +55 °C without freezing. Relative humidity of 35 to 85% RH is acceptable without condensation. Furthermore, the protection rating meets IEC IP67 and DIN IP69K, plus NEMA 4A, 6, and 12. Ambient light resistance reaches 5,000 lux for incandescent lamps and 20,000 lux for sunlight.

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, tested 6 times in each axis. Therefore, the sensor performs well on moving machinery and outdoor equipment. However, avoid direct high-pressure spray on the connector seam during washdown.

Installation Guide

First, select a mounting position that faces the target within the 300 mm range. Keep the sensing face clean and free of obstruction. Next, secure the sensor using the mounting hole and tighten to 0.5 N·m maximum. Over-tightening may damage the housing threads.

Then, connect the M12 pigtail connector to the power supply and load. Confirm the wiring polarity before power-on, because the PNP output requires a sinking PLC input. After that, adjust the 1-turn trimmer to set sensitivity for the target material. Finally, select LIGHT-ON or DARK-ON mode according to your control logic. The green stable LED should remain lit during normal detection.

Packaging List

• 1 × Keyence PZ-G42EP photoelectric sensor

• 1 × M12 pigtail connector cable (attached)

• 1 × Mounting bracket and screws

• 1 × Product instruction sheet

FAQ

Q1: What is the maximum detection distance of the PZ-G42EP?
A: The PZ-G42EP detects up to 300 mm when using 10 × 10 cm white paper as the target.

Q2: How does the PNP output differ from the NPN version?
A: The PNP output sources current to the load, which suits positive-common PLC wiring and many European control systems.

Q3: Does this sensor support both LIGHT-ON and DARK-ON operation?
A: Yes, users can switch between LIGHT-ON and DARK-ON modes directly on the unit.

Q4: Can the sensor withstand washdown environments?
A: Yes, it carries IEC IP67 and DIN IP69K ratings, so it handles wet and washdown areas.

Q5: How do you ship the PZ-G42EP?
A: We ship via FedEx, UPS, and DHL with tracking for every order.