A/958SS Multi-Turn Absolute Encoder
- Manufacturer: ELCIS Encoder
- Category: Encoder, Absolute Encoder, Multi-turn Absolute Encoder, SENSORS
The ELCIS 958SS (A/958SS) is a 58 mm diameter, 30-bit, 16,384-turn SSI absolute multi-turn encoder with an RS422/RS485 line driver output stage and a clock frequency of 100 kHz to 1 MHz. For general industrial use, it is servo-mounted using front-mounted clamps or screws, and features a 6 mm diameter (10 mm diameter) stainless steel shaft (optional) that supports radial loads of 40 N and axial loads of 110 N. It offers standard IP64 or sealed IP66 protection, resistance to 30 G of impact and 10 G of vibration, and operation between -40 and +85 °C (with cable: -5…+70 °C).
The A/958SS is a multi-turn absolute encoder with optical readout via an IR photodiode array. It allows selection of 4096, 8192, 16384, 32768, or 65536 steps per revolution and 4096 or 16384 revolutions, with a maximum resolution of 30 bits at 16384 revolutions. It transmits position via an SSI serial interface (RS422 line driver) with a clock frequency of 100 kHz to 1 MHz, in Gray code or binary code, and is available in preset (S1) and preset push-button (S4, with radial output only) variants.
Manufactured with a Ø58 mm aluminum body and a Ø6 f6 stainless steel shaft (Ø10 optional), it supports radial loads of 40 N and axial loads of 110 N. It features standard IP64 or sealed IP66 protection, withstands impacts of 30 G and vibrations of 10 G, and operates in a thermal range of -40 to +85 °C (with cable: -5 to +70 °C).
- Maximum resolution of 30 bit in 16384 turns.
- Serial interface SSI with line driver RS422 and watch 100 kHz a 1 MHz.
- Variants with preset function (S1) or with a preset button (S4, (radial output only).
- Temperature range of -40 a +85 °C with protection up to IP66.
Technical Frequently Asked Questions
What resolutions and lap times does the A/958SS offer?
It allows you to choose 4096, 8192, 16384, 32768 or 65536 steps per revolution and 4096 or 16384 revolutions, with a maximum resolution of 30 bits at 16384 revolutions.
What are the differences between the SSI interface options (SL, S1, and S4)?
The SL is the standard SSI interface. The S1 is the same as the SL, but with a preset function. The S4 is the same as the SL, but with a preset button, and is only available with a radial output.
What connectors and cables are available?
It is supplied with a 1 m cable with IP65 rating in axial (CAW) or radial (CRW) output, or with 12-pin circular connectors with IP65 rating in axial (PAL) or radial (PRL) configuration.
Properties
| Feature | Specification |
|---|---|
| Mechanics | |
| Weight | 300 g |
| Axis | Ø6 f6 stainless steel (optional Ø10) |
| max radial/axial load. | 40 / 110 N |
| Exit stage | Line driver (according to RS422 / RS485) |
| Electric | |
| Exit-side protection | IP65 according to connection |
| Feeding | 10–30 V DC |
| Max. consumption. | 1 W (SL) · 1.5 W (S1) |
| LSB pitch frequency | 800 kHz |
| Exit codes | Gray, Binary |
| Max resolution. | 30 bit / 16384 laps |
| Output interface | SSI (SL) · SSI with preset (S1 / S4) |
| 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 | -40 … +85 °C (with wired output: -5…+70 °C) |
| Reference | Configuration |
|---|---|
| A/958SS12-12-06-G-S4-0-PRLA958SS121206GS40PRL | 4096 steps/rev. · revolutions: 4096 · standard Ø6 mm shaft · Gray · SSI + preset push button (radial only) · 12-pin radial connector · IP65 |
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