Overview
The Eaton E57-12GU04-GDB is a barrel-style inductive proximity sensor from Eaton’s E57 Global series. It detects ferrous metal objects without physical contact using electromagnetic field sensing technology. This 3-wire sensor provides reliable NO (normally open) switching output at 4mm sensing distance, making it ideal for industrial automation control systems, motion detection, and proximity-based machine control.
Key Features
- 4mm sensing distance – Optimal range for compact machine assembly and positioning tasks
- 3-wire DC operation – Simple power and signal wiring; 10–30 Vdc supply range
- PNP open-collector output – NO (normally open) logic; 100 mA maximum load current at 30 Vdc
- M12 4-pin connector – Standard industrial interface for quick connect/disconnect
- Unshielded design – Cost-effective for non-ferrous material environments
- IP67 enclosure rating – Sealed against dust and moisture for harsh plant floors
- 12mm barrel diameter – Compact form factor fits tight mounting spaces
- 1000 Hz switching frequency – Responsive detection for fast-moving machinery
- Nickel-plated brass housing – Corrosion resistance in chemical or washdown environments
Technical Specifications
- Sensing Range: 4 mm
- Output Type: PNP open collector, normally open (NO)
- Supply Voltage: 10–30 Vdc
- Output Current (max): 100 mA at 30 Vdc
- Wiring: 3-wire DC
- Connector: M12 (4-pin micro DC connector)
- Barrel Diameter: 12 mm
- Mounting Style: Threaded barrel, straight orientation
- Shielding: Unshielded
- Enclosure Rating: IP67
- Switching Frequency: 1000 Hz (max)
- Sensing Accuracy: <1.0% of sensing range
- Operating Temperature Range: −25 to +70 °C (−13 to +158 °F)
- Housing Material: Nickel-plated brass
- Sensing Face Material: Nonmetallic
- Series: E57 Global
Typical Applications
- Conveyor systems and belt position detection
- Part presence and part counting in assembly lines
- Machine tool positioning and limit switching
- Pneumatic and hydraulic actuator feedback
- Parts feeder indexing and material handling
- Door and gate open/close sensing
- Production line speed and motion verification
Compatibility & Replacements
Compatible With
- Allen-Bradley PLCs and CompactLogix controllers with 24 Vdc I/O modules
- Siemens S7-1200 and S7-1500 PLC systems
- Omron CJ-series and NX-series PLCs
- Mitsubishi FX and iQ-R series controllers
- Generic 10–30 Vdc industrial control systems with PNP sensor input cards
- Standard 24 Vdc DC power supplies in industrial control cabinets
- Eaton and third-party sensor networks operating on discrete 24 Vdc I/O
Replaces / Drop-In Replacement For
The E57-12GU04-GDB is a direct replacement for other Eaton E57 4mm sensors with matching M12 connectors and 3-wire PNP output in general-purpose configurations. Verify exact connector type and wiring before substitution.
Works With
- Eaton sensor cables and M12 connectors (standard industrial catalog)
- Studio 5000 (Allen-Bradley) discrete input modules
- TIA Portal (Siemens) digital input configuration
- Standard EIA RS-422/485 gateway modules for networked sensor integration
- Discrete 24 Vdc switching logic and relay control circuits
- Industrial control software platforms using standard PNP sensor logic
