A/958S Multi-Turn Absolute Encoder
- Manufacturer: ELCIS Encoder
- Category: Encoder, Absolute Encoder, Multi-turn Absolute Encoder, SENSORS
The ELCIS 958S (A/958S) is a 58 mm diameter, 25-bit, 4096-turn absolute multi-turn encoder with a 20 mA push-pull parallel output and a 200 kHz LSB step rate. For general industrial use, it is servo-mounted using front-mounted clamps or screws. It features a 6 mm diameter (10 mm diameter) stainless steel shaft that supports radial and axial loads of 40 and 110 N, IP64 protection on the shaft side (IP66 in the sealed version), resistance to 30 G of impact and 10 G of vibration, and operation between -30 and +70 °C.
The A/958S is a multi-turn absolute encoder with optical readout via LED and IR photodiode array. It allows selection of 4096, 8192, or 65536 steps per revolution and 16, 256, or 4096 revolutions, with a maximum resolution of 25 bits at 4096 revolutions. It outputs the position in Gray or Binary code via a parallel (PP) or parallel with preset (P1) interface, with a 20 mA push-pull output stage and a 200 kHz LSB step rate.
Built with a Ø58 mm aluminum housing and a Ø6 f6 stainless steel shaft (Ø10 optional), it supports radial and axial loads of 40 and 110 N. It has IP64 protection on the shaft side (IP66 in the sealed version), withstands impacts of 30 G and vibrations of 10 G, and operates in a thermal range of -30 to +70 °C.
- Maximum resolution of 25 bit in 4096 turns.
- Exit codes Gray and Binary with accuracy up to ±½ LSB (<13 bit).
- Parallel output interface (PP) or parallel with preset function (P1).
- Push-pull output stage of 20 mA fed to 10–30 V DC with 200 kHz LSB.
Technical Frequently Asked Questions
What resolutions and lap times does the A/958S allow you to configure?
It allows you to choose 4096, 8192 or 65536 steps per revolution and 16, 256 or 4096 revolutions, with a maximum resolution of 25 bits at 4096 revolutions.
What is the difference between PP and P1 interfaces?
The PP interface displays the angular value on the output connector in parallel; the number of conductors is proportional to the resolution and the code type. The P1 interface is the same as the PP interface, but with a preset function.
What mechanical and sealing options are available?
The standard version offers IP64 protection on the shaft with bearings for 6000 rpm continuous operation. The W option incorporates sealed bearings with IP66 protection at 3000 rpm, and the Q option is manufactured entirely from stainless steel.
Properties
| Feature | Specification |
|---|---|
| Mechanics | |
| Housing | Aluminum (customizable upon request) |
| Weight | 400 g |
| Axis | Ø6 f6 stainless steel (optional Ø10) |
| max radial/axial load. | 40 / 110 N |
| Electric | |
| Exit-side protection | IP65 according to connection |
| Feeding | 10–30 V DC |
| Max. consumption. | 100–400 mA according to bits |
| LSB pitch frequency | 200 kHz |
| Exit codes | Gray, Binary |
| Max resolution. | 25 bit / 4096 laps |
| Interface / Output | Parallel (PP) · Parallel with preset (P1) · Push-pull 20 mA |
| Protection and environment | |
| axle-side protection | IP64 standard · IP66 sealed |
| max. continuous RPM | 6000 standard · 3000 sealed (intermittent: +30 %) |
| Impact/vibration resistance | 30 G (11 ms) 10 G (10–1000 Hz) |
| Operating/storage temperature | -30 … +70 °C / -40 … +85 °C |
| Reference | Configuration |
|---|---|
| A/958S-12-12-06-B-P1-0-CVA958S121206BP10CV | 4096 steps/rev. · revolutions: 4096 · standard Ø6 mm shaft · Binary · Parallel + Preset · 1 m axial cable · max. 25 bits · IP65 |
| Other combinations of resolution, power supply, electronics and connection are available upon request: please contact us and we will confirm the exact reference. | |
Related documentation, cases, and guides
Other products
