Overview
The SMC D-H7PW is a solid state auto switch designed for magnetic position detection on pneumatic and hydraulic actuators. This band-mounted 24V unit integrates a 2-color LED indicator—red illuminates during the operating range, and green indicates the optimum detection zone. The D-H7PW is a 3-wire PNP output configuration delivering switching control for IC circuits, relays, and PLCs.
Key Features
- 2-Color LED Indication: Red shows operating range; green shows optimal position—eliminating guesswork during setup
- PNP Output (3-Wire): 80 mA maximum load current capability
- Wide Supply Range: 5, 12, 24 VDC (4.5 to 28 VDC)
- Low Internal Voltage Drop: 0.8 V or less at 10 mA load current
- IP67-Rated: Sealed to IEC 60529 criteria for oil and water resistance
- Compact Band Mounting: Direct installation on cylinder tubes without drilling
Technical Specifications
- Output Type: 3-Wire PNP
- Power Supply: 5, 12, 24 VDC (4.5 to 28 VDC)
- Applicable Load: IC circuit, Relay, PLC
- Load Current: 80 mA or less (PNP)
- Load Voltage: 28 VDC or less
- Voltage Drop: 0.8 V or less
- Leakage Current: 100 µA or less at 24 VDC
- Lead Wire: 2 cores (Brown/Blue), oil-resistant vinyl insulation
- Mounting Style: Band mounting (direct on cylinder)
- Indicator Light: 2-Color LED (Red/Green)
- Operating Temperature: -10 to 60 °C
- Enclosure Rating: IP67
- Impact Rating: 1000 m/s²
- Standards: CE/UKCA marked
Typical Applications
- Pneumatic and hydraulic cylinder position detection and control
- Automated machinery and assembly line equipment
- Air gripper position sensing
- PLC and relay-based logic control
- Industrial automation requiring visual feedback during commissioning and troubleshooting
Compatibility & Replacements
Compatible With
- SMC band-mounting actuators and cylinders (D-H7A1/A2, D-H7B, D-H7BW, D-H7BA)
- IC circuits, relays, and PLC input modules
- 24V DC industrial control systems
- Standard pneumatic and hydraulic manifolds
Replaces / Drop-In Replacement For
- D-H7NW (3-wire NPN variant with same mounting and specifications)
- D-H7BW (2-wire relay-type variant for alternative applications)
- Verify compatibility with your system integrator before ordering for other switch models.
Works With
- SMC pneumatic cylinders and actuators with band-mount capability
- PLC input modules (24V DC compatible)
- Industrial relay circuits and control panels
- Standard 24V DC power supplies (4.5–28 VDC range)
- PROFIBUS, PROFINET, and EtherNet/IP gateway systems (through PLC)
