A/990FS Multi-Turn Absolute Encoder
- Manufacturer: ELCIS Encoder
- Category: Encoder, Absolute Encoder, Multi-turn Absolute Encoder, SENSORS
El ELCIS 990FS (A/990FS) es un encoder absoluto SSI multivuelta de eje hueco con acoplamiento interno patentado en forma de estrella (como el mod. 72), que absorbe hasta ±3 mm axiales, ±0,05 mm radiales y ±2° angulares, y ofrece hasta 30 bit en 16384 vueltas. Codifica en Gray o binario y transmite el dato por SSI (RS422), con reloj externo de 100 kHz a 1 MHz y opción de preset (S1). Monta carcasa de aluminio y eje hueco de acero inoxidable, con rodamientos sellados opcionales para IP66, trabaja entre -40 y +85 °C (-5…+70 °C con salida por cable) y resiste impactos de 30 G y vibraciones de 10 G.
As an SSI absolute encoder with a hollow shaft and patented internal star coupling (like the Mod. 72), the A/990FS absorbs up to ±3 mm of axial displacement, ±0.05 mm radial displacement, and ±2° angular displacement. It encodes position in Gray or Binary, with a resolution of up to 30 bits in 16384 revolutions, and transmits data via an SSI serial interface (RS422), with an external clock from 100 kHz to 1 MHz and a preset function option (S1).
It features an aluminum housing and a hollow stainless steel shaft, with optional sealed bearings for IP66, operates between -40 and +85 °C (-5…+70 °C with cable output) and withstands shocks of 30 G (11 ms) and vibrations of 10 G (10–1000 Hz).
- Resolution of up to 30 bits in 16384 laps (Gray or Binary code).
- Star coupling with axial compensation ±3 mm, radial of ±0.05 mm and angular of ±2°.
- Serial interface SSI (RS422), with an external clock of 100 kHz a 1 MHz and preset function option.
- Impact resistance of 30 G (11 ms) already vibrations of 10 G (10–1000 Hz).
Technical Frequently Asked Questions
What compensation does the star coupling of the A/990FS allow?
According to the manufacturer, the coupling allows a maximum compensation of ±3 mm axial, ±0.05 mm radial and ±2° angular.
What resolutions does the A/990FS offer?
Up to 30 bits in 16384 turns, with steps per turn of 4096, 8192, 16384, 32768 or 65536, in Gray or Binary code.
How is the position transmitted and what is the difference between SL and S1?
Via SSI serial interface (RS485/RS422): the value is stored in the encoder and transmitted starting with the most significant bit using an external clock from 100 kHz to 1 MHz. The (S1) version adds a preset function compared to the (SL) version.
Properties
| Feature | Specification |
|---|---|
| Mechanics | |
| Housing | Aluminum (carcasa personalizable bajo pedido) |
| Weight | 1400 g |
| Axis | Hole Ø10 H7 (op. Ø6, Ø8, Ø9.52 or on request), stainless steel · internal star coupling |
| Electric | |
| Exit-side protection | IP65 |
| Feeding | 10–30 VDC |
| Max. consumption. | 1 W (SL) · 1.5 W (S1) |
| Exit codes | Gray, Binary |
| Max resolution. | 30 bit in 16384 laps |
| Number of turns | 4096, 16384 |
| Step frequency | 800 kHz |
| Protection and environment | |
| axle-side protection | IP65 standard · IP66 sealed |
| max. continuous RPM | 5000 standard · 2500 sealed (intermittent: +30 %) |
| Impact resistance | 30 G (11 ms) |
| Vibration resistance | 10 G (10–1000 Hz) |
| Operating temperature | -40 … +85 °C (with wired output: -5…+70 °C) |
| Reference | Configuration |
|---|---|
| A/990FS-12-12-10-G-SL-0-PRLA990FS121210GSL0PRL | 4096 steps/revolution · Turns: 4096 · Ø10 · Gray · SSI · 12-pin radial connector · IP65 |
| Other combinations of resolution, power supply, electronics and connection are available upon request: please contact us and we will confirm the exact reference. | |
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