Overview
The SMC D-F7PW is a compact solid state auto switch designed for detecting cylinder and pneumatic actuator positions in industrial automation systems. This PNP sensor combines reliable magnetic field detection with integrated diagnostics, making it ideal for machine vision systems, assembly automation, and process control applications where position feedback is critical.
Key Features
- 2-color LED indicator (Red for outside operating range, Green for proper operating point) enables quick diagnostics without external equipment
- Solid state design with no moving parts ensures extended service life and resistance to vibration
- PNP 3-wire output configuration compatible with standard industrial PLCs and controllers
- Oilproof heavy-duty lead wire rated for hydraulic and pneumatic environments
- CE marking and RoHS compliance for global market acceptance
- Compact rail-mounting form factor with grommet entry simplifies installation
Technical Specifications
- Output Configuration: PNP, 3-wire (Brown, Blue, Black conductors)
- Supply Voltage: 5 to 24 VDC
- Maximum Load Current: 80 mA
- Voltage Drop: 0.8 V (typical at 10 mA load current)
- Hysteresis Voltage: 1.5 V maximum
- Cable Type: Oilproof vinyl, heavy-duty insulation
- Cable Outer Diameter: ø3.4 mm
- Cable Length: 0.5 m (standard); 3 m and 5 m options available
- Minimum Bending Radius: 21 mm
- Operating Temperature: −10 to +60 °C
- Dimensions: 11 mm H × 15 mm W × 27.6 mm L
- Weight: 13 g (0.5 m cable configuration)
- Certifications: CE mark, RoHS
Typical Applications
The SMC D-F7PW is commonly deployed in:
- Pneumatic cylinder position sensing in assembly automation
- Rotary actuator end-of-stroke detection
- Pick-and-place machines and handling systems
- Industrial packaging and material handling equipment
- Process verification and interlocking systems
- Machine tool automation and CNC operations
Compatibility & Replacements
Compatible With
- Allen-Bradley CompactLogix and ControlLogix PLC input modules
- Siemens S7-1200 and S7-1500 digital input terminals
- Omron CJ, NJ series controllers
- Mitsubishi FX, Q series PLC inputs
- Standard 24 VDC industrial relay and terminal blocks
- Any controller with 5–24 VDC compatible digital input
Replaces / Drop-In Replacement For
- D-F79W (2-core NPN variant with similar form factor)
- D-J79W (alternative sensor series with same mounting interface)
- Earlier SMC D-F7 generation sensors with 0.5 m cable
Works With
- SMC D-F series cylinder and actuator switches
- Pneumatic automation software: Fluid Simulation, Automation Studio
- Standard PLC programming languages: Ladder Logic, Structured Text (ST)
- Industrial protocols: EtherNet/IP gateway modules, PROFINET adapters
- IEC 61131-3 compliant control systems
