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The ELM35-0CA0A024A is a compact, high-resolution multiturn encoder developed by SICK, designed for precise motor feedback applications. It features a BiSS C digital interface, which enables power and high-speed data transmission over a single cable—ideal for reducing wiring in modern servo systems. With a 35 mm housing diameter, it fits well in tight motor assemblies.

Key Technical Specifications

• Interface: BiSS C (digital single-cable communication)

• Resolution:

  • Singleturn: 24-bit (16,777,216 steps per revolution)

  • Multiturn: Supported (exact bit depth not specified, typically 12-bit)

• System Accuracy: ±25 arcseconds

• Signal Noise: ±1 arcsecond (at 25 °C)

• Startup Time: ≤500 milliseconds

• User Memory: 8,192 bytes

• Temperature Sensor Compatibility: Supports NTC and PTC sensors

• Electrical Connection: 4-pin male connector

• Power Supply: 7 to 12 V DC

• Current Consumption: ≤150 mA

• Weight: ≤100 g

Mechanical & Environmental Characteristics

• Shaft Type: Blind hollow shaft

• Max Speed: 12,000 rpm

• Max Angular Acceleration: ≤250,000 rad/s²

• Permitted Shaft Movement:

  • Radial: ±0.1 mm (static), ±0.025 mm (dynamic)

  • Axial: ±1 mm (static)

• Operating Temperature: –20 °C to +105 °C

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

• Shock Resistance: 100 g for 6 ms

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

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

• Protection Rating: IP40 (with connector and cover properly closed)

• MTTFD (Mean Time to Dangerous Failure): 145 years

Typical Applications

• Industries:

  • Robotics

  • Packaging machinery

  • General industrial automation

• Use Cases:

  • Precise rotary position tracking with multiturn capability

  • Motors in compact or harsh environments

  • Systems utilizing BiSS C interface for fast, reliable communication