Magnescale RS97 Absolute Rotary Encoder

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High‑Accuracy Absolute Rotary Encoder for CNC and Precision Motion Control

The RS97 is a high‑accuracy absolute rotary encoder designed for precision position feedback in CNC machine tools and advanced motion control systems. Communicates directly via FANUC, Mitsubishi and SIEMENS (DRIVE‑CLiQ) without requiring an amplifier.

Featuring a contactless magnetic measurement system and rotor–stator separated design, the RS97 delivers stable, reliable performance even in harsh industrial environments.

Key features

High‑accuracy absolute positioning – Provides angular accuracy of ±2.5 arcseconds for precise rotary measurement
High‑resolution output – Up to 23‑bit resolution (8,388,608 pulses per revolution) for fine position control
Direct interface to CNC systems – Communicates directly via FANUC, Mitsubishi and SIEMENS (DRIVE‑CLiQ) without requiring an amplifier
Resistant to harsh environments – Magnetic detection allows operation in environments with oil, condensation and contamination
Flexible mechanical integration – Large through‑hole diameters (96 mm / 180 mm) for easy mounting
Improved measurement stability – Dual‑head configuration reduces the effect of axial runout errors

RS97 Rotary Encoder Magnescale configuration

How it works

The RS97 uses a magnetic, non‑contact absolute measurement principle:

Rotor–stator separated structure enables flexible installation
Magnetic sensing ensures stable signal quality even in difficult environments
Dual read heads improve measurement consistency by compensating mechanical variation
This results in:
Reliable angular position feedback
High noise immunity
Long‑term system stability