Product Overview

The SRM50-HFA0-K22 is part of SICK’s high-end SRS/SRM50 feedback system lineup, designed for precision rotor position sensing with an absolute rotary encoder featuring HIPERFACE® interface. Ideal for high-speed and high-demand motion control systems, it combines exceptional accuracy with rugged mechanical design.motionworld.comsick.com

Key Specifications & Performance

Absolute Positioning

• Resolution: 1,024 sine/cosine periods per revolution with interpolation yielding up to 134,217,728 total steps (via multiturn).motionworld.com

• Measuring Step: 0.3 arc seconds (with 12-bit interpolation).motionworld.com

• System Accuracy: ±52″ (seconds) typical.motionworld.com

Speed and Memory

• Operating Speed: Up to 6,000 rpm for absolute position generation.motionworld.com

• Max Speed: Up to 12,000 rpm mechanical.motionworld.com

• Memory: Onboard EEPROM with 1,792 bytes available.motionworld.com

Interface & Communication

• Output Format: HIPERFACE® with differential analog channels (SIN, COS, REFSIN, REFCOS) plus parameter channel via RS-485 (Data +/–).motionworld.com

• Connector: 8-pin male radial connector.motionworld.com

Electrical Specs

• Supply Voltage: 7–12 V DC (recommended 8 V DC).motionworld.com

• Current Consumption: ~80 mA (no-load).motionworld.com

• Frequency Bandwidth: Up to 200 kHz analog output.motionworld.com

Mechanics & Durability

• Rotor Inertia: 10 g·cm²

• Shaft: Tapered; mounting via spring plate coupling.motionworld.com

• Mechanical Robustness:

  • Angular acceleration: ≤ 200,000 rad/s²

  • Shock: 100 g (6 ms); Vibration: 20 g, 10 Hz–2 kHz

  • Permitted shaft misalignment: radial ±0.6 mm, axial ±0.95 mm (static); dynamic ±0.1 mm / ±0.2 mm respectivelymotionworld.com

• Durability: Ball bearing life rated at 3.6 × 10⁹ revolutions.motionworld.com

Environmental & Reliability Ratings

• Temperature Range: –30 °C to +115 °C operating; –40 °C to +125 °C storage.motionworld.com

• Protection Class: IP40 (with connector inserted).motionworld.com

• MTTFd: Approximately 235 years (EN ISO 13849, assuming 90% diagnostic coverage).motionworld.comcdn.plc-trade.com

Engineering Insights

• High-Resolution Absolute Feedback
  With analog HIPERFACE® interface and high interpolation resolution, this unit ensures supreme positional fidelity—ideal for robotics, precise motion axes, or safety-critical applications.

• Robust Mechanics for Industrial Use
  High permissible shaft misalignment, strong acceleration tolerance, and extended bearing life deliver reliability even under dynamic loads and challenging service conditions.

• Compact Design with Wide Thermal Range
  Small form factor and broad temperature tolerance make it versatile across engine cabinets and demanding environments.

• Reliable Interface & Diagnostics
  Multi-channel communication (analog + RS-485) supports comprehensive data exchange and diagnostics—integrates seamlessly into modern motion control networks.

Suggested Product Page Description

SICK SRM50-HFA0-K22 — HIPERFACE® Rotary Feedback Encoder (Multi-turn)
An advanced absolute encoder system delivering precise positioning with 134 million effective steps, deployed via HIPERFACE® interface. Built for high-performance automation, it supports up to 12,000 rpm, resists shock and vibration, and operates from –30 °C to +115 °C with IP40 integrity. High reliability is underscored by a 235-year MTTFd rating, while its compact design and powerful features make it ideal for robotics, servo drives, and safety applications.