Overview
The SMC D-H7PW is a solid state auto switch designed for accurate position detection on pneumatic actuators and air grippers. With 3-wire PNP output and 2-color LED indication (red/green), this band-mounted sensor provides reliable magnetic detection across DC 5–24V supply ranges. The D-H7PW is ideal for controlling actuator endpoints in industrial automation, machine tool applications, and pneumatic systems requiring diagnostics and visual feedback.
Key Features
- 3-Wire PNP Output: Supports IC circuits, relays, and PLC loads
- 2-Color Indication: Red LED illuminates outside operating range; green LED in proper operating range for simplified diagnostics
- Low Power Consumption: 10 mA or less supply current
- High Load Current: Supports up to 80 mA output
- Band Mounting Style: Direct clamp attachment to pneumatic cylinders and grippers
- Compact & Rugged: Sealed solid state design with no moving parts
Technical Specifications
- Wiring Type: 3-wire
- Output Type: PNP
- Power Supply Voltage: 5, 12, 24 VDC (4.5 to 28 VDC)
- Supply Current: 10 mA or less
- Load Voltage: 28 VDC or less
- Load Current (Max): 80 mA or less
- Voltage Drop (Internal): 0.8 V or less at 10 mA load current
- Leakage Current: 100 µA or less at 24 VDC
- Lead Wire: 2-core (Brown/Blue), oilproof vinyl heavy insulation cable, 0.5 m standard
- Mounting Method: Band mount with grommet electrical entry
- Certifications: CE marking, RoHS compliant
Typical Applications
- Pneumatic cylinder position detection and control
- Air gripper stroke sensing for robotic automation
- Machine tool end-of-stroke confirmation
- Industrial actuator endpoint feedback in PLC/relay control circuits
- Automated assembly and material handling equipment
Compatibility & Replacements
Compatible With
- SMC pneumatic cylinders and grippers across all bore sizes (20, 25, 32 mm+)
- PLC inputs (24 VDC logic)
- Relay coils (24 VDC rated)
- IC circuits and digital logic (5–24 VDC)
- Band mounting brackets for direct actuator mounting
Replaces / Drop-In Replacement For
- D-H7NW (NPN variant)
- D-H7BW (2-wire variant)
- Other SMC D-H7 series position sensors requiring PNP 3-wire configuration
Works With
- SMC pneumatic system components (cylinders, grippers, manifolds)
- Standard 24 VDC industrial control panels
- Allen-Bradley, Siemens, Omron, and other major PLC platforms
- Relay logic control circuits
- Industrial automation and machine control systems
