Heidenhain RCN 2380 7KS12-W9 is a circular encoder (optical rotary encoder) introduced by HEIDENHAIN. It is widely used in high-precision machine tools, automation systems, and instruments such as spectrometers where accurate angular or position measurement is required. The main technical specifications and features of this model are as follows:

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Basic Specifications

• Model: RCN 2380 7KS12-W9 (corresponding product ID 667785-01)
• Type: Circular encoder (incremental rotary encoder)
• Measuring range: 360° (one full revolution)
• Resolution: Optional from ±5 arcsec (approx. 0.0014°) down to ±1 arcsec (approx. 0.00028°), meeting high-precision requirements
• Repeatability: ≤ 0.5 arcsec (approx. 0.00014°)
• Output signals: Incremental square-wave signals (A/B), available with TTL or HTL levels
• Supply voltage: +5 V DC (standard)
• Operating temperature: −20 °C to +60 °C (industrial environment)

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Mechanical Design

• Shaft diameter: 12 mm (the “12” in 7KS12-W9)
• Shaft length: Approx. 70 mm (customizable upon request)
• Design: Hollow-shaft structure for direct coupling to the machine drive shaft
• Bearings: Integrated bearings for low-friction operation and long service life
• Stator coupling: Optional, enabling rigid mechanical connection

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Functional Safety and Diagnostics

• Supports functional safety features (in accordance with IEC 61508 / IEC 61511)
• Built-in self-monitoring and error diagnostics for real-time signal integrity supervision

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Typical Applications

• High-speed CNC machine tools (turning, milling, grinding)
• Printing machines, spectrometers, and optical measuring instruments
• Other automation equipment requiring high-precision angular measurement