A/790 Multi-Turn Absolute Encoder
- Manufacturer: ELCIS Encoder
- Category: Encoder, Absolute Encoder, Multi-turn Absolute Encoder, SENSORS
The ELCIS 790 (A/790) is a programmable multi-turn absolute encoder with up to 65,536 steps (16-bit) in 4,096 turns (12-bit), featuring an SSI interface and incremental Sine/Cosine outputs at 1024 ppr or RS422 outputs of up to 16,384 pulses per turn. It has a Ø10 h7 stainless steel shaft with a 5 kg radial/axial load capacity, resistance to 40 G of impact and 12 G of vibration, and operates between -20 and +85 °C with a 10–30 V power supply.
As an optical multi-turn absolute encoder with an OptoASIC sensor, the A/790 is programmable up to 65,536 steps (16-bit) in 4,096 turns (12-bit), with Gray code or binary output via SSI serial interface with preset. It also supports Sine/Cosine output of 1024 ppr or incremental RS422 output of up to 16,384 pulses per turn, and, with the PR option, can be programmed via PC using USB or RS422 in ASCII code.
It has a Ø10 h7 stainless steel shaft with a radial/axial load capacity of 5 kg, impact resistance of 40 G (11 ms) and vibration resistance of 12 G (10–2000 Hz), and operates between -20 and +85 °C with a power supply of 10 to 30 V.
- Programmable resolution up to 65536 steps in 4096 turns.
- Serial interface SSI with Preset and additional incremental output RS422 up to 16384 pulses/turn.
- Programmable (PR option) via PC software by USB, or via interface RS422 in code ASCII.
- Impact resistance of 40 G (11 ms) already vibrations of 12 G (10–2000 Hz).
Technical Frequently Asked Questions
What interface does the A/790 use to transmit position?
A synchronous serial SSI interface with clock, address (DIR) and preset inputs, with RS422 output electronics. The value is transmitted starting from the most significant bit (MSB).
Can the encoder resolution be programmed?
Yes, with the Programmable (PR) option (max. 8192 div/revolution), the output code (Gray or Binary), resolution (up to the encoder's maximum physical resolution), preset value, and counting direction can be set using PC software connected via USB, or via an RS422 interface in ASCII code. The software and cable are available upon request.
What additional outputs does it support besides the SSI interface?
The A/790 supports Sin/Cos output of 1024 ppr (option S) or incremental RS422 output of up to 16384 pulses per revolution (options I1 to I5: 1024, 2048, 4096, 8192 or 16384).
Properties
| Feature | Specification |
|---|---|
| Mechanics | |
| Weight | 750 g |
| Axis | Ø10 h7 stainless steel (optional Ø8, Ø12, Ø12.7 or on request) |
| max radial/axial load. | 5 kg |
| Electric | |
| Exit-side protection | IP65 or IP66 according to connector |
| Exit codes | Gray, Binary (programmable) |
| Max resolution. | 65536 steps (16 bit) |
| max. number of turns. | 4096 (12 bit) |
| Feeding | 10–30 V |
| Max. consumption. | 200 mA |
| Maximum frequency (clock) | 500 kHz |
| Protection and environment | |
| axle-side protection | IP65 standard · IP66 sealed |
| max. continuous RPM | 6000 standard · 3000 sealed (intermittent: +30 %) |
| Impact resistance | 40 G (11 ms) |
| Vibration resistance | 12 G (10–2000 Hz) |
| Temp. func. / warehousing. | -20 … +85 °C / -30 … +85 °C |
| Reference | Configuration |
|---|---|
| A/790-MG-4096-1030-S1-PR-CV-RA790MG40961030S1PRCVR | Multiturn · Gray · (B) · Resolution: 4096 · 10–30 V · SSI with Preset · Programmable (max. 8192 div/turn) · 1 m cable · IP65 · Output: R |
| 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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