A/759UMA Multi-Turn Absolute Encoder
- Manufacturer: ELCIS Encoder
- Category: Encoder, Absolute Encoder, Multi-turn Absolute Encoder, SENSORS
The 759UMA model addresses the need for precise absolute positioning in industrial motors where traditional couplings introduce play, mechanical error, and require excessive axial space. Its spring-loaded mounting system absorbs motor expansion and vibrations without losing absolute reference after shutdowns or power outages.
It features a high-resolution programmable SSI interface (up to 65536 x 4096 rotations) synchronized by Clock and additional incremental Sin/Cos outputs at 1024 ppr or RS422. The internal electronics, based on OptoAsic technology, allow data transmission frequencies of up to 500 kHz without degradation.
Constructed with an anodized aluminum base and a hollow stainless steel shaft up to Ø 15 mm, it supports high asymmetrical mechanical loads of up to 4 kg. Its design protects the components against dust and moisture according to industry standards. Available in guemisa.es.
- Absolute resolution of 65536 x 4096 programmable rotations for maximum precision.
- SSI synchronous transmission with Preset, operating at frequencies of 500 kHz.
- Stainless steel shaft Ø 6÷15 mm with spring (spring) for direct mounting and vibration absorption.
- Certified industrial bearings for radial/axial loads of 4 Kg at 6000 RPM.
Technical Frequently Asked Questions
What precautions should be taken when mounting the encoder with the spring?
The device is applied directly to the motor shaft without an external coupling. The spring is designed to compensate for axial movement; it must be ensured that the motor shaft tolerance meets UNI ISO 2768-mk standards.
Is it suitable for environments with fluid contamination?
The standard version offers IP64 sealing, but can be ordered with sealed bearings (option Z, stagno 66) raising the protection to IP66 and adjusting the starting torque to 90 gcm.
What are the environmental and mechanical operating limits?
The operating temperature ranges from -20 to +85 °C. It withstands mechanical peaks of 50 G and continuous vibrations of 12 G without degrading the internal optical sensors.
Properties
| Feature | Specification |
|---|---|
| Vcc Power Supply | 10 ÷ 30 V DC |
| Axle Type | Stainless Steel Cable Ø 6 ÷ 15 mm with spring |
| Total Weight | 340 g |
| Max. Radial/Axial Load | 4 Kg |
| Absolute Resolution | 65536 x 4096 spins (16×12 bit) |
| Max Clock Frequency | 500 kHz |
| Functional Temperature | -20 – +85 °C |
| IP protection | IP64 (std) / IP66 (stgno) |
| Maximum Continuous RPM | 6000 (Intermittent) / 3000 (Continuous) |
| Starting Torque | 60 / 90 gcm |
| Impact Resistance | 50 G x 11 ms |
| Vibration Resistance | 12 G (10 – 2000 Hz) |
| Available Interface | SSI with Preset / RS422 |
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