Keyence PZ-G Series: Self-Contained Threaded Photoelectric Sensors

The Keyence PZ-G Series offers advanced self-contained threaded photoelectric sensors designed for robust industrial applications. These sensors combine enhanced performance features with user-friendly installation and adjustment capabilities.

Key Features

MEGA POWER: Offers significantly longer detection distances compared to conventional models, enabled by advanced LED technology.
EASY ADJUSTMENT: Features a front light-receiving indicator for straightforward optical axis alignment, simplifying setup and troubleshooting.
EASY INSTALLATION: Utilizes one-touch mounting brackets that eliminate the need for screws, reducing installation time and effort.
Enhanced User-Friendliness: Includes standard M8 and M12 quick-disconnects for easier replacement, oil-resistant cables for harsh environments, and a variety of mounting options.
High-Speed Detection: Capable of detecting targets at response speeds up to 500 µs, suitable for high-speed production lines.
Interference Suppression: Built-in functions help prevent interference between multiple sensors.
Bipolar Output: Available in NPN and PNP configurations, compatible with various input devices.

Model Overview

The PZ-G Series includes several types of sensors:

Thrubeam: High-power dual IR LED (PZ-G52) with up to 40m detection range, and 4-element red LED (PZ-G51) with up to 20m detection range.
Reflective: Diffuse reflective (PZ-G41, PZ-G42), Narrow-view reflective (PZ-G101), and Definite reflective (PZ-G102) types, all utilizing high-intensity 4-element red LEDs for visible beam spots and easy alignment.
Retro-reflective: Standard PZ-G61 with P.R.O. function for reliable detection of metallic targets, offering long-range detection up to 4.2m.
Transparent Object Detection: PZ-G62 uses a DEX circuit for stable detection of transparent objects, with detection distances up to 1m.

Specifications Summary

Key specifications include:

Detecting Distances: Vary by model, ranging from 0.1m up to 40m.
Light Source: Red LED or Infrared LED (x2).
Response Time: Typically 500 µs.
Power Supply: 10 to 30 VDC.
Current Consumption: Varies by model, typically around 20-35 mA max.
Output: Open collector output, NPN, PNP, or Bipolar (NPN+PNP).
Environmental Resistance: IEC IP67 / NEMA 4x, 6, 12 / DIN IP69K enclosure rating. Resistant to ambient light up to 5,000 lux (incandescent) or 20,000 lux (sunlight). Operating temperature range: -20 to 55 °C.
Materials: Housing typically made of Glass-fiber reinforced PBT or Polyamide.
Weight: Varies by model and connector type, generally ranging from approximately 10g to 170g.

Detailed specifications for each model variant, including output types (NPN, PNP, Bipolar), connector types (M8, M12), and cable options, are available in the full datasheet.

Options and Accessories

A wide range of optional accessories are available to enhance sensor functionality and mounting flexibility:

Mounting Brackets: Various types including L-shaped, side-mounting, landscape, and one-touch brackets are offered for rectangular and threaded models to suit different installation requirements.
Attachments: Slits and polarization filters can be attached to modify sensor performance, such as improving interference suppression or beam resolution.
Cables: M8 and M12 connector cables are available in PVC and PUR (oil-resistant) materials, with straight and L-shaped connector options, and various lengths.
Reflectors: Specific reflectors (R-2L, R-3, R-5) and reflective tape are available for retro-reflective and other sensor types.

Diagrammatic Information

The document includes detailed diagrams illustrating:

Sensor Head Lineups: Visual representations of different sensor types and their configurations.
Model Variations: Tables and diagrams showing specific model numbers and their corresponding features.
Dimensions: Precise measurements for each sensor model, connector, and mounting bracket, provided in millimeters and inches.
Input/Output Circuits: Wiring diagrams showing pin arrangements for M8 and M12 connectors and typical output circuit configurations (NPN, PNP, Bipolar).
Characteristics Graphs: Visualizations of sensor performance metrics such as receiver excess gain vs. detecting distance, interference area, parallel displacement of optical, optical axis angle, and operating distance vs. detecting distance. These graphs help in understanding sensor behavior under various conditions.

Model Variations Table

A comprehensive table details the sensor head lineup and model variations, categorizing sensors by detection method (Thrubeam, Reflective, Retro-reflective, Transparent object detection), design (Rectangular, Threaded), output type (NPN, PNP, Bipolar), light source, and cable options. This table aids in selecting the appropriate model for specific applications.

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