Manufacturer: Sony   Model: SA55 Optical semi-absolute feedback scale   Travel: 120mm to 2270mm   Accuracy: +/- 3µm   Resolution: 0.1µm , 0.5µm, 1µm   Reference points: 1 point within measuring length (standard is centre position)   Measuring system: Optical, infrared LED   Max response speed: Depends on model (12 to 60m/min)   Protection design grade: To IP53   Air purge: Yes   Signal pitch: 40µm   Cable length: 1m head cable   Output type: A/B phase absolute information by battery backup interface signal with zero point signal by differential line driver (eg Fanuc16/18 control)

A high accuracy feedback scale for high accurcay NC machines tools or measuring equipment. High accuracy, medium profile semi-absolute optical encoder with air purge facility. Compatible CNC control system Fanuc 16/18 series. Absolute battery back-up uses 4 'D' type alkaline battery cells which last approximatley 1 year when used 12 hours/day for 3 axes.   Compatibility: Control systems with A/B phase input (Fanuc 16/18 series)