Festo SME-8M-DS-24V-K-5,0-OE 543863 Magnetic Reed Proximity Sensor

Festo SME-8M-DS-24V-K-5,0-OE (543863) is a magnetic reed proximity sensor for pneumatic cylinder end-position detection. Installed in the T-slot from above, the sensor sits flush with the cylinder profile and requires no additional mounting brackets. Contact-based NO triples the current-carrying capacity beyond electronic switches and can switch both AC and DC loads, making it suitable for industrial controls with varying load types. Integrated yellow LED indicates switching status. 5 m open-end PUR cable for flexible wiring.

Applications:

• End-position detection for pneumatic cylinders with T-slot (e.g., DSNU, DNC, ADN series)

• Gripper position monitoring in pick-and-place systems

• Factory automation and packaging machinery

• Conveyor systems and material handling equipment

• Suited for energy chains and robotic applications

Core Specifications:

• Measuring principle: Magnetic reed

• Slot compatibility: T-slot (insertion from above, flush mounting)

• Switching element function: N/O contact (normally open)

• Switching output: Contact-based, bipolar (AC/DC capable)

• Max. output current: 500 mA (80 mA when used with mounting kit)

• Max. switching capacity DC: 10 W / AC: 10 VA

• Operating voltage range: 5‑30 V DC/AC

• Electrical connection: 5 m PUR cable, open end (3‑wire)

• Switching status indication: Yellow LED

• Degree of protection: IP65 / IP68

• Ambient temperature (fixed installation): -40 °C … +70 °C

• Housing material: PA (polyamide), high‑alloy stainless steel

• Corrosion resistance class (CRC): 2 – moderate corrosion stress

• Oil‑resistant, free of copper and PTFE, RoHS compliant

• Weight: approx. 58 g (with 5 m cable, 3‑wire)

Advanced Specifications:

• Maximum switching frequency: 480 Hz

• Repetition accuracy: ≤ 0.2 mm

• Switching times: ≤ 1.8 ms (on/off)

• Voltage drop: < 1.5 V

• Energy chain suitability: tested > 5 million cycles at 75 mm bending radius

• Cable sheath material: TPE-U(PUR)

• LABS (PWIS) conformity: VDMA24364‑B2‑L

• Approvals: c UL us listed (OL), RCM, CE, UKCA

System Integration:

• Insert from above into the T-slot of any compatible pneumatic cylinder (Festo DSNU, DNC, ADN series). Secure by screw‑clamping (tightening torque 0.8 Nm max.).

• The 5 m open‑end cable (3 wires, conductor cross‑section 0.14 mm²) can be connected directly to a PLC input or junction box.

• For detailed installation and wiring diagrams, refer to the product hardware manual.

Standards & Compliance:
Refer to manufacturer official documentation for detailed certification and compliance information.

Related Products (logical chain):

• SME-8M-DS-24V-K-0,3-M8D (543861) – 0.3 m cable with M8 connector

• SME-8M-DS-24V-K-2,5-OE (543862) – 2.5 m cable, open end

• SME-8M-ZS-24V-K-2,5-OE (543872) – N/C output (normally closed)

• SME-8-S-LED-24 (150857) – standard reed sensor for T‑slot (lower switching frequency)