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The EKM36-2KF0B018A is a compact, high-resolution multiturn motor feedback encoder made by SICK. It uses the HIPERFACE DSL® digital interface, allowing both power and data to be transmitted through a single cable, which simplifies wiring and reduces installation time. Its small 36 mm diameter makes it well-suited for tight spaces and motor integration.

Key Technical Specifications

• Interface: HIPERFACE DSL® (digital single-cable)

• Resolution:

  • Per Revolution: 18-bit (262,144 steps)

  • Multiturn: 12-bit (4,096 revolutions)

• System Accuracy: ±120 arcseconds

• Signal Noise: ±5 arcseconds at 25 °C

• Startup Time: ≤500 milliseconds

• User Memory: 8,192 bytes (freely available)

• Temperature Sensor Support: Compatible with NTC/PTC sensors

• Connection: 4-pin male connector

• Power Supply: 7 V to 12 V (8 V recommended)

• Current Consumption: ≤150 mA

• Weight: 0.1 kg

Mechanical & Environmental Specifications

• Shaft Type: Tapered shaft

• Max Speed: 9,000 rpm

• Max Angular Acceleration: ≤500,000 radians/s²

• Permitted Shaft Movement:

  • Radial:

    • Static: ±0.1 mm

    • Dynamic: ±0.05 mm

  • Axial:

    • Static: ±0.5 mm

    • Dynamic: ±0.1 mm

• Operating Temperature: –20 °C to +115 °C

• Storage Temperature: –40 °C to +125 °C

• Shock Resistance: 100 g for 6 milliseconds

• Vibration Resistance: 50 g from 10 Hz to 2,000 Hz

• EMC Compliance: Fulfills EN 61000-6-2, EN 61000-6-4, and IEC 61326-3

• Protection Rating: IP40 (when cover is closed and connector is attached)

• MTTFD (Mean Time to Dangerous Failure): 500 years

Functional Safety Features

• SIL Level: SIL 2 (IEC 61508), SILCL 2 (EN 62061)

• Performance Level: PL d (EN ISO 13849)

• Category: Cat 3

• Test Interval: Every 1 hour

• Maximum Demand Rate: 216 µs

• Safety Resolutions:

  • Channel 1: 18-bit or 20-bit

  • Channel 2: 9-bit

• Mission Time (TM): 20 years

Typical Applications

• Industries:

  • Packaging

  • Robotics

  • Factory Automation

• Use Cases:

  • High-precision rotary position and speed measurement

  • Feedback for servo motors in compact environments

  • Systems with functional safety requirements (e.g., SIL2/PL d certified applications)