Keyence PZ-G51CP Photoelectric Sensor

Keyence PZ-G51CP Thrubeam Sensor PNP M8

Product Introduction

The PZ-G51CP belongs to the Keyence PZ-G series. This built-in amplifier photoelectric sensor adopts a thrubeam structure for stable long-distance sensing. Moreover, it achieves a maximum detecting distance of 20 m. The unit uses a red LED light source and delivers a PNP open collector output. Additionally, an M8 connector keeps wiring simple on dense production lines. Its rectangular body mounts easily with standard brackets. Meanwhile, IP67 and IP69K ratings resist dust, water, and washdown cleaning. Therefore, the PZ-G51CP fits material handling, logistics, and packaging systems.

Technical Specifications

The PZ-G51CP provides a detecting distance of 20 m maximum, which equals 65.6 ft. Sensitivity adjustment relies on a 1-turn trimmer with a 230° span. Besides, the response time remains at 500 µs maximum for rapid triggering. Operation mode toggles between LIGHT-ON and DARK-ON. Four LED indicators assist setup and diagnostics. Specifically, power shows orange, output shows orange, stable operation shows green, and light receiving shows red. The lens cover uses polyarylate for long service life. Spot diameter information is not available from the supplier.

Communication and Electrical Data

For communication, the PZ-G51CP offers no built-in ports and no supported protocols. However, the M8 connector covers all wiring requirements. The supply voltage spans 10 to 30 VDC nominal with 10% ripple. Current consumption is 20 mA or less for the transmitter and 28 mA or less for the receiver. Output type is PNP open collector with 30 V maximum and 100 mA maximum. Residual voltage stays at 1 V maximum. Furthermore, protection circuits include reversed polarity, overcurrent, and surge absorption. Interference suppression handles up to 2 units through polarization filters or automatic frequency switching.

Mechanical and Environmental Parameters

The operating temperature range is -20 to +55 °C without freezing. Relative humidity stays between 35 and 85 % RH without condensation. Protection ratings cover IEC IP67, NEMA 4A / 6 / 12, and DIN IP69K. Ambient light resistance reaches 5,000 lux for incandescent lamps and 20,000 lux for sunlight. Vibration resistance spans 10 to 55 Hz with 1.5 mm double amplitude across X, Y, and Z axes. Shock resistance reaches 1,000 m/s² six times per axis. The housing uses glass-fiber reinforced PBT. Weight is approximately 10 g for the rectangular connector model. Mounting torque must stay at 0.5 N·m or below.

Installation Guide

First, mount the transmitter and receiver units directly opposite each other. Next, align both lenses until the red beam strikes the receiver center. Then, tighten the brackets with a torque of 0.5 N·m or less. After that, connect the M8 plug to the supply and output lines. Furthermore, adjust the sensitivity with the 1-turn trimmer while monitoring the indicators. Finally, select LIGHT-ON or DARK-ON mode to match your control logic. For dense installations, activate the automatic frequency function to prevent crosstalk. Besides, keep the lens cover clean because dust weakens the beam. The IP69K rating allows washdown, yet the connector must stay sealed.

Packaging List

• 1 x Keyence PZ-G51CP transmitter and receiver set

• 1 x M8 connector cable (if ordered)

• 1 x Mounting bracket set

• 1 x Instruction sheet

Shipping methods include Fedex, UPS, and DHL.

FAQ

Q1: What is the detecting distance of the PZ-G51CP?
A: The PZ-G51CP reaches 20 m maximum, which equals 65.6 ft. This supports long conveyor and gate applications.

Q2: What output type does this sensor use?
A: It uses a PNP open collector output. Maximum voltage is 30 V, and maximum current is 100 mA.

Q3: How fast is the response time?
A: The PZ-G51CP responds within 500 µs maximum, so it tracks fast-moving objects reliably.

Q4: Can I use the PZ-G51CP in a washdown area?
A: Yes. It carries IEC IP67, NEMA 4A / 6 / 12, and DIN IP69K ratings for harsh environments.

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