The RSF Elektronik SZ 312-110 is a high-precision linear encoder delivering accurate position and motion feedback for industrial automation and metrology. It features an enclosed design with sputtered chrome-on-glass graduation, solid-state LED illumination, and silicon photodetectors for reliable operation in machine tool and production environments. The encoder outputs differential voltage signals, sinusoidal waveforms, and RS 422 square wave options, making it compatible with both analog and digital control systems.
Technical Specifications
Output Signals
• Track signals (differential): 0.6–1.2 Vpp (typical 1 Vpp)
• Reference mark (differential): 0.8–1.2 V square wave (typical 1 V)
• Sinusoidal voltage: 1 Vpp
• RS 422 line driver square wave signals available
• A1/A2 phase shift: 90° ±10° electrical
• Reference voltage: V+/2 (approximately 2.5 V)
Graduation
• Material: Float glass with sputtered chrome
• Scale grating pitch options: 10 µm, 20 µm, or 100 µm
• Glass thickness: 2 ±0.2 mm
• Thermal expansion coefficient: approximately 8.5×10⁻⁶/K
• Grating design: Equal line and space widths
Accuracy
• Specified as ± tolerance in µm/m across the entire measuring length for distances under 1000 mm
Reference Marks
• Optical scanning evaluation
• Distance-coded reference marks available (K-suffix models) for absolute positioning within 20 mm travel
• Multiple marks require minimum 50 mm n×50 mm spacing
Environmental & Cable
• Cable jacket: PUR material, resistant to commercial coolants and lubricants
• Fixed mounting temperature: –20 °C to +70 °C
• Continuous flexing temperature: –5 °C to +70 °C
• Standard cable length: 3 m; detachable versions to 9 m (custom lengths available)
• Metallic armor protection recommended for harsh environments with hot metal chips
– Key Features
• Flexible adhesive-film scale mounting compensates for thermal expansion mismatch
• Solid-state LED and silicon photodetector design eliminates mechanical wear
• Multiple electrical output formats support legacy and modern control architectures
– Typical Applications
• Machine tool position feedback
• Industrial automation systems
• Precision metrology installations
• Production technology control
– Compatibility & Integration
The encoder accepts detachable PUR-jacketed cables in standard and extended lengths. Differential voltage, sinusoidal, and RS 422 outputs allow integration with analog counters, digital displays with preset/reset functions, and modern CNC/PLC systems.
