Overview
The Balluff BES-516-325-BO-C is a precision-engineered inductive proximity sensor designed for reliable non-contact metal detection in industrial automation systems. This compact sensor combines rugged construction with proven performance across manufacturing, material handling, and quality control applications. The PNP normally-open output integrates directly with standard PLC input modules and industrial controls.
Key Features
- M12x1 threaded housing (Ø 12 x 60 mm) — flush-mount compatible
- 10-30VDC operating voltage with broad supply compatibility
- PNP normally-open (NO) switching output
- 2 mm sensing distance — proven range for most metallic targets
- 3000 Hz switching frequency — responsive detection for high-speed applications
- Short-circuit protected and wear-free operation
- Robust performance in contaminated or harsh environments
Technical Specifications
- Housing Type: M12x1 threaded, cylindrical
- Dimensions: Ø 12 mm × 60 mm length
- Sensing Distance: 2 mm
- Operating Voltage: 10–30 VDC
- Output Type: PNP normally-open
- Switching Frequency: 3000 Hz
- Installation: Flush-mount M12 connector
- Operating Principle: Inductive proximity sensing (no physical contact)
- Series: BES 516 (Balluff Global Sensors)
Typical Applications
- Metal part detection on assembly lines and conveyor systems
- Material handling and object position sensing
- Quality control and inspection station monitoring
- Press and stamping equipment safety interlocks
- Packaging machinery and fill-level detection
- Automation systems requiring non-contact, wear-free sensing
Compatibility & Replacements
Compatible With
- Allen-Bradley CompactLogix, ControlLogix, MicroLogix PLC input modules
- Siemens S7-1200, S7-1500, and legacy Simatic controllers
- Omron Sysmac and related automation platforms
- Mitsubishi MELSEC PLC series
- Generic 10-30VDC PLC input cards and relay logic systems
- Industrial ethernet and standard 24VDC switched input circuits
Replaces / Drop-In Replacement For
- BES-516-325-BO-C-02 (same series, different voltage code)
- BES-516-325-BO-C-03 (variant)
- BES-516-325-BO-C-05 (variant)
- BES-516-325-BO-C-07 (variant)
- BES-516-325-BO-C-PU (buffered cable variant)
Works With
- M12 A-coded connector ecosystems
- Standard PNP digital input modules
- Balluff IO-Link gateways and smart sensor platforms (if configured with IO-Link variants)
- Control systems using 10–30VDC supply rails
- Non-IP67 and standard enclosure-mounted installations





