The HEIDENHAIN 684658‑03 (ROD 430 600 28S08‑HY) is an incremental rotary encoder with integral bearing, offering 600 signal periods per revolution, a maximum scanning frequency of 200 kHz, and a wide supply voltage range of 10.8–26.4 V. It is designed for precision industrial applications requiring robust shaft coupling and high reliability.

⚙️ Key Specifications

• Model / Part Number: 684658‑03
• Series: ROD 430 (part of ROD 600 family)
• Type: Incremental rotary encoder with integral bearing
• Signal Periods: 600 per revolution
• Scanning Frequency: Up to 200 kHz
• Supply Voltage: 10.8–26.4 V DC
• Operating Temperature: −20 °C to +80 °C
• Interfaces: TTL / HTL depending on configuration
• Housing Diameter: ≈ 66 mm (ROD 600 family standard)
• Protection Rating: IP66 (dust‑tight, protected against strong water jets)
• Accuracy: Positioning accuracy down to ±13 arc seconds (system accuracy depends on grating period)
• Mechanical Design: Solid shaft with separate shaft coupling to compensate axial/radial misalignment and prevent bearing stress

📊 Product Highlights

• Precision: High signal quality with up to 600 periods per revolution, suitable for CNC, robotics, and automation.
• Durability: Integral bearing and IP66 protection make it suitable for harsh industrial environments.
• Flexibility: Supports both TTL and HTL interfaces, allowing integration into diverse control systems.
• Reliability: Designed to prevent premature wear by using compensatory rotor coupling, ensuring long service life.