Overview
The SMC D-M9PSAPC auto switch is a solid-state, general-purpose pneumatic switch designed for direct mounting on MH, MX, CQ2, NCQ2, and NCQ8 cylinders. Unlike traditional reed switches, this PNP (3-wire) switch uses magnetic detection with an electronic circuit for precise, repeatable actuation with minimal power consumption. The D-M9PSAPC features a 0.5 m lead wire with M8-3 pin connector and is rated IP67 for water resistance.
Key Features
- Solid-state magnetic sensing — Hall Effect detection with no moving parts; faster response and higher reliability than mechanical switches
- 3-wire PNP output — Compatible with standard relay, PLC, and IC circuit loads; 40 mA maximum load current
- Direct mounting — Mounts directly to cylinder without external brackets; reduces assembly time and footprint
- IP67 water resistance — Grommet electrical entry and sealed design suitable for washdown and damp environments
- Compact dimensions — 4.6 mm H × 4 mm W × 22 mm L; fits tight spaces in pneumatic automation layouts
- 28 VDC rated — Low-voltage, industrial-grade performance with 2-color LED indication
Technical Specifications
- Series: D-M9 (General Purpose Solid State)
- Switch Type: 3-Wire PNP
- Electrical Rating: 28 VDC, 40 mA max load
- Operating Temperature: −10 °C to +60 °C
- Lead Length: 0.5 m (standard); M8-3 pin circular connector
- Mounting Style: Direct (C-slot on cylinder piston rod)
- Sensing Method: Magnetic (Hall Effect)
- Enclosure Rating: IP67
- Dimensions: 4.6 mm H × 4 mm W × 22 mm L
- Weight: 12 g
- Certifications: CE, IEC 529, IEC 947-5-2, JIS C 4524, JIS C 4525, NECA 0402
- Applicable Loads: IC circuits, relays, PLCs
Typical Applications
- Assembly line end-of-stroke detection on pneumatic cylinders
- Automated clamping and ejection systems requiring position feedback
- Industrial air gripper position monitoring
- PLC and relay control integration in factory automation
- Washdown and humid environment installations (food, beverage, automotive manufacturing)
Compatibility & Replacements
Compatible With
- SMC MH cylinder series
- SMC MX cylinder series
- SMC CQ2 compact cylinder series
- SMC NCQ2 and NCQ8 cylinder series
- Standard 28 VDC relay and PLC modules
- IC circuit and microcontroller inputs rated for 28 VDC PNP logic
Replaces / Drop-In Replacement For
- SMC D-M9 series reed switches (mechanical) as direct upgrade to solid-state
- Verify exact model compatibility with OEM documentation or contact technical support for legacy cylinder revisions
Works With
- Pneumatic control systems and valve manifolds using 28 VDC supply
- Industrial PLC platforms: Allen-Bradley CompactLogix/ControlLogix, Siemens S7, Mitsubishi FX series
- Standard industrial relays with 40 mA or higher coil rating
- IP67 grommet entry compatible with standard control panel wiring practices
