KEYENCE PS-N Series Digital Photoelectric Sensor
| Brand | KEYENCE |
|---|---|
| Origin | Japan |
| Manufacturer Type | Manufacturer |
| Origin Category | Imported |
| Model | PS-N Series |
| Pricing | Upon Request |
Overview
The KEYENCE PS-N Series Digital Photoelectric Sensor is an industrial-grade, microprocessor-controlled optical sensing system engineered for reliable presence, absence, and position detection in demanding manufacturing and automation environments. Operating on the principle of modulated visible red or infrared light transmission and reception, the PS-N Series employs digital signal processing to deliver high immunity to ambient light interference, temperature drift, and electrical noise. Unlike analog sensors, its fully digital architecture enables precise threshold calibration, real-time signal monitoring, and deterministic response timing—critical for high-speed assembly lines, packaging machinery, and robotic cell safety interlocks. Designed with robust IP67-rated housings and wide operating temperature ranges (−25°C to +55°C), the series meets stringent requirements for durability in wet, dusty, or vibration-prone settings typical of automotive, food & beverage, and electronics production facilities.
Key Features
- NEO Preset Function: Enables one-touch setup of sensitivity thresholds using a teach-in button—eliminating manual potentiometer adjustment and reducing commissioning time by up to 70%.
- NEO MEGA Mode: Dynamically optimizes detection stability across varying target reflectivity or surface finish without recalibration—ideal for mixed-product lines handling matte black plastics and glossy metals.
- Sleep & Pause Functions: Reduces power consumption during idle cycles while maintaining fast wake-up response (<10 ms), supporting energy-efficient machine design compliant with ISO 50001 guidelines.
- DATUM Function: Stores and recalls up to four independent detection reference points per sensor, facilitating multi-stage part verification (e.g., orientation + height + presence) within a single device.
- Open Fieldbus Compatibility: Supports CC-Link IE TSN, EtherNet/IP, and PROFINET via optional I/O modules—enabling seamless integration into Industry 4.0 architectures with time-synchronized diagnostics.
- Cable Extension Capability: Sensor head cables use standardized 2-conductor unshielded power wiring; field-extendable up to 10 m via soldering or certified metal junction boxes—reducing conduit costs and simplifying retrofit installations.
- Interference Prevention Technology: Implements frequency-hopping modulation and synchronized emitter-receiver pairing to suppress crosstalk in dense sensor arrays (e.g., conveyor belt side-by-side mounting).
Sample Compatibility & Compliance
The PS-N Series detects opaque, translucent, and reflective targets—including metal, plastic, glass, paper, and composite materials—with consistent repeatability (±0.1 mm positional accuracy under stable lighting). It complies with IEC 60947-5-2 (industrial proximity sensors), UL 508 (industrial control equipment), and EMC Directive 2014/30/EU. All models support GLP/GMP-aligned configuration logging when used with KEYENCE’s NX-FA software, enabling audit-ready change tracking per FDA 21 CFR Part 11 requirements for regulated pharmaceutical or medical device manufacturing.
Software & Data Management
Configuration, diagnostics, and firmware updates are performed via KEYENCE’s free NX-FA Engineering Software (Windows-based), which provides graphical signal waveform visualization, real-time IO status mapping, and exportable CSV logs for statistical process control (SPC). The software supports version-controlled parameter backups, role-based user access levels, and automated report generation aligned with ISO 9001 clause 8.5.2 (identification and traceability). Remote monitoring is enabled through embedded web server functionality (HTTP/HTTPS), allowing secure access to live status and historical event logs via standard browsers—no proprietary client required.
Applications
- High-speed bottle/can presence verification on beverage fill lines
- Lead frame positioning and coplanarity check in semiconductor packaging
- End-of-travel detection for CNC machine tool doors and safety curtains
- Label presence and print registration validation in flexographic printing presses
- Stack height monitoring in automated palletizing cells
- Component orientation verification prior to robotic pick-and-place
FAQ
What is the maximum allowable extension length for the PS-N sensor head cable?
Up to 10 meters using approved mechanical splicing or soldered connections with proper strain relief and insulation integrity.
Does the PS-N Series support IO-Link communication?
No—PS-N models are designed for discrete I/O and fieldbus integration only; for IO-Link, consider KEYENCE’s IV Series or LJ-V line scanners.
Can the PS-N detect transparent objects such as PET film or glass vials?
Yes—when configured in retro-reflective or diffuse-mode with NEO MEGA optimization, it achieves stable detection of low-contrast transparent targets.
Is firmware update capability available in the field?
Yes—updates are delivered via NX-FA software over USB or Ethernet; no hardware modification is required.
Are replacement lenses or mounting brackets available as spare parts?
Yes—KEYENCE offers a full catalog of accessories including stainless-steel mounting clamps, polarization filters, and lens cleaning kits (part numbers listed in the official PS-N Accessories Manual).
