4 Wire DC

A 4-wire DC inductive proximity switch is a type of sensor that detects metal objects without physical contact. It has four wires for connection: two for power supply (DC voltage) and two for output signal (normally open and normally closed contacts). When a metal object enters the sensing range, the switch activates, sending a signal to control devices like PLCs, relays, or motors. These switches are widely used in industrial automation, manufacturing, and machinery for object detection, position sensing, and process control. They offer reliable and accurate detection in harsh environments.

Typical Applications

  • Industrial Automation: Object detection, conveyor systems.

  • Machinery: Position sensing (e.g., cylinders, rotating parts).

  • Safety Systems: Non-contact detection in high-vibration areas.

Advantages

✔ Reliable in dirty/wet conditions (IP68).
✔ Fast response (1 kHz switching).
✔ Dual output (NO+NC) for flexible integration.

Key Features & Specifications

  1. Wiring Configuration:

    • 2 wires for power: 10–30V DC (polarity protected).

    • 2 wires for output: Normally Open (NO) + Normally Closed (NC) contacts.

  2. Detection Range:

    • Rated switching distance: 1–50 mm (selectable).

    • Hysteresis: 5–10% of sensing distance (prevents chatter).

    • Repeatability: ±5–10% of sensing distance.

  3. Electrical Ratings:

    • Current consumption: <10 mA at 30V DC.

    • Max switching current: 300 mA (resistive load).

    • Short-circuit protection: Yes.

  4. Performance:

    • Switching frequency: Up to 1 kHz (fast response).

    • LED indicator: Shows operational status.

  5. Durability & Protection:

    • Housing: Chrome-plated brass (corrosion-resistant).

    • IP rating: IP68 (dust/waterproof for harsh environments).

  6. Installation:

    • Mounting: Flush or non-flush (depends on application).

    • Cable: Standard 4-core, 2-meter (custom lengths available).