Overview

This document provides detailed technical specifications, ordering information, and mechanical data for cylindrical inductive sensors housed in metal casings. These sensors are designed for industrial applications requiring reliable proximity detection with robust construction and standardized electrical interfaces.

Sensor Types and Electrical Configurations

• Switching Types: Normally Open (NO), Normally Closed (NC), and combined NO + NC outputs.
• Output Types: NPN (negative switching) and PNP (positive switching).
• Connector: Standard M12 x 1 female connector output for easy integration.

Mechanical Specifications

• Housing Diameters: Available in 8 mm, 12 mm, 18 mm, 30 mm, and 45 mm diameters.
• Housing Materials: Stainless steel for 8 mm diameter; nickel-plated brass for 12 mm and larger diameters.
• Sensing Face: Made of durable plastic.
• Mounting: Options for flush and non-flush mounting.
• Connector and Nut Sizes: M8 x 1, M12 x 1, M18 x 1, M30 x 1.5, M45 x 1.5 with corresponding wrench sizes (SW13 to SW55) and recommended tightening torques.

Electrical and Performance Specifications

• Supply Voltage (UB): Varies by diameter:
  • 8 mm: 7 to 30 Vdc
  • 12 mm: 5 to 40 Vdc
  • 18 mm: 5 to 60 Vdc
  • 30 and 45 mm: 7 to 60 Vdc
• Maximum Ripple: 10%
• No-load Supply Current (Io): ≤ 10 mA
• Voltage Drop (Ud): ≤ 1.5 V for smaller diameters, ≤ 2.2 V for larger diameters
• Operating Temperature Range: -25°C to +75°C
• Thermal Drift of Sensing Distance (Sr): ±10%
• Repeat Accuracy (R): 2%
• Switching Hysteresis (H): 10%
• Degree of Protection: IP67 (dust tight and protected against water immersion)
• Switch Status Indicator: Yellow LED for visual confirmation
• Protection Features: Short-circuit and overload protection, reverse polarity protection, suppression of initial false impulses
• Electromagnetic Compatibility (EMC): Compliant with EN60947-5-2
• Shock and Vibration Resistance: Tested according to EN60068-2-27 and EN60068-2-6

Nominal Sensing Distances and Switching Frequencies

The sensors have nominal sensing distances (Sn) ranging from 5 mm to 50 mm depending on the housing size and model. Maximum switching frequencies range from 60 kHz for smaller sensors up to 400 kHz for larger diameter sensors, supporting fast response times in automation applications.

Ordering Information

Part numbers are structured to indicate diameter, switching type, and output configuration. For example, changing the last digit from 9 to 8 in a part number switches between NPN and PNP output types (e.g., DCA8/4309KS to DCA8/4308KS).

Summary of Key Parameters by Diameter

Best Practices and Recommendations

• Ensure correct wiring according to the color codes provided for NO, NC, and combined outputs to avoid damage.
• Use recommended tightening torques and wrench sizes to prevent mechanical damage during installation.
• Verify supply voltage compatibility with sensor diameter specifications to ensure proper operation.
• Consider environmental conditions within the specified temperature range and IP67 protection for reliable sensor performance.
• Utilize the LED indicator to confirm switch status during setup and troubleshooting.

Conclusion

The cylindrical inductive sensors described offer versatile options for industrial proximity sensing with robust metal housings, multiple sizes, and electrical configurations. Their compliance with international standards and protective features make them suitable for demanding automation environments.