Overview
The Eaton E52-18RU04-CN rectangular inductive proximity sensor delivers dependable contact-free object detection in space-constrained mounting environments. Eaton’s E52 rectangular-style inductive proximity sensors feature a compact, space-saving design for applications where tubular sensors cannot be used. These 3-wire DC devices are constructed with robust PBT housings for corrosion resistance, and they are epoxy filled to withstand shock and vibration. The E52-18RU04-CN is designed for general-purpose industrial automation, assembly line detection, and motion control systems requiring unshielded sensing performance.
Key Features
- Compact rectangular form factor — optimized for tight spaces where cylindrical sensors do not fit
- 3-wire DC configuration — simplifies wiring and integration into DC control circuits
- PNP output with 1NO contact — open-collector switching for direct PLC and controller input
- 4mm sensing distance — reliable detection range for standard industrial metal and non-metal objects
- LED status indicator — bright indicator LEDs are available on all models to clearly show sensor status
- IP66 environmental rating — sealed construction for washdown and dust environments
Technical Specifications
- Supply Voltage: 10-30V DC
- Output Type: PNP Open Collector
- Output Configuration: 1NO (Normally Open)
- Switching Frequency: 500 Hz
- Load Current (max): 100 mA
- Sensing Distance: 4mm
- Sensing Accuracy: < 1% accuracy
- Connection Type: Cable connection, 2m (6.5 ft.)
- Wiring: 3-Wire DC Unshielded
- Housing Material: PBT
- Dimensions: 0.71 x 1.18 x 0.39 in. (18.0 x 30.0 x 10.0 mm)
- Temperature Range: -13°F to +131°F (-25°C to +55°C)
- Environmental Rating (NEMA): NEMA 4, 12
- Environmental Rating (IEC): IP66
- Series: E52 R18
Typical Applications
The Eaton E52-18RU04-CN serves a wide range of industrial automation functions:
- Machine tool position and part detection
- Conveyor belt and assembly line object sensing
- Packaging machinery and material handling systems
- Industrial press and stamping equipment monitoring
- Robotic pick-and-place and material flow control
- Washdown and wet environment applications requiring IP66 protection
Compatibility & Replacements
Compatible With
- Allen-Bradley CompactLogix, ControlLogix, and MicroLogix PLC input modules
- Siemens S7-1200, S7-1500, and S7-300 series PLCs via standard 24 VDC input cards
- Mitsubishi FX and Q-series programmable controllers
- Omron CP, NJ, and CJ-series controllers
- Schneider Electric Modicon and Automation platforms
- All standard industrial DC 24V control systems with PNP input capability
- EtherCAT, EtherNet/IP, and PROFINET I/O networks via compatible gateway modules
Replaces / Drop-In Replacement For
The E52-18RU04-CN is part of the broader Eaton E52 rectangular sensor family. It directly replaces earlier production versions of the same part number and is interchangeable with other E52-18RU models featuring identical voltage (10-30 VDC), output type (PNP), and sensing range (4mm). Verify connector type and cable length with your system requirements before ordering.
Works With
- PLC input modules with 10-30 VDC rated PNP open-collector inputs
- Direct wiring to DC control relays and solenoid coils (with appropriate current limiting)
- Industrial automation software platforms: Studio 5000 (Allen-Bradley), TIA Portal (Siemens), GX Works (Mitsubishi)
- Protocol-agnostic DC sensing circuits — no special networking required for basic applications
- Discrete I/O terminal blocks and industrial communication gateways supporting 24 VDC discrete I/O
