Single-turn Absolute Encoder A/790A
- Category: Encoder, Absolute Encoder, Single-turn Absolute Encoder, SENSORS
In critical industrial environments, position sensors must withstand vibration, dust, and oil without losing accuracy. The A/790A Single-Turn Absolute Encoder addresses the need for immediate angle readings without requiring an initial reference pulse, ensuring mechanical stability in heavy machinery.
The solution integrates a robust metal housing that protects the internal electronics and offers multiple output interfaces such as SSI, Analog, or Push-Pull. With programmable resolution up to 13 bits and flexible power supply between 5V and 30V, it adapts to existing control systems without requiring changes to the equipment's electrical architecture.
Built with long-life bearings and a stainless steel shaft, it supports radial/axial loads of 15 kg and operating temperatures from -20 to +85 °C. Its IP65 protection on the outlet side ensures reliability in wet or dirty conditions. Available in guemisa.es.
- Anodized metal casing that protects against oil, dust, and moisture.
- Bearing life of 1.5 x 10^9 revolutions at 1000 rpm with reduced load.
- Proven mechanical resistance to 50 G impacts and 12 G vibrations.
- Multiple output options: Parallel, SSI, Analog or Push-Pull for flexible integration.
Technical Frequently Asked Questions
What alignment precautions does the A/790A shaft require during installation?
The standard shaft is made of stainless steel Ø 11 h7. It is crucial to ensure that the coupling does not exceed the radial/axial load of 15 Kg and to avoid excessive axial loads so as not to compromise the bearing life, especially in environments with vibrations up to 2000 Hz.
What connectors and output options are available for the A/790A?
Connectors such as MS310A18-1P IP65, DB25P IP64, or CV cable are available. Outputs include Parallel (RS422), SSI with Preset, Analog (Current/Voltage), and 70mA Push-Pull, allowing you to choose the most suitable interface for your programmable logic controller.
What are the operating and storage limits for this encoder?
The standard operating temperature range is -20 to +85 °C, with heating permitted up to +75 °C for 72 hours. Storage supports temperatures between -30 and +85 °C, maintaining the integrity of the unbreakable disk and phototransistor optical sensors.
How does the A/790A integrate with existing control systems?
Integration is straightforward via its programmable interfaces. The parallel output requires an external clock, while the analog output converts position into current (4–20 mA) or voltage (0–10 V). It also features parity and latch options to ensure the integrity of transmitted data.
Properties
| Feature | Specification |
|---|---|
| Sensor Type | Optical (Phototransistors) |
| Maximum Resolution | 1 to 12 bits (2 to 4096 positions) |
| Vcc Power Supplies | 5V ± 5% / 15V ± 5% / 8÷30V |
| Standard Axle | Stainless Steel Ø12h7 |
| Shaft Diameter Options | 8, 9.52, 12, 12.7 mm on request |
| Weight | 850 g |
| Maximum Radial/Axial Load | 15 Kg |
| Bearing Life | 1.5 × 10⁹ revolutions |
| Maximum Continuous RPM | 6.000 / 3.000 / 8.000 |
| Starting Torque | 90 / 150 gcm |
| Operating Temperature | -20 – +85 °C |
| IP Protection Output | IP65 / IP66 (depending on the connector) |
| Impact Resistance | 40 G x 11 ms |
| Vibration Resistance | 12 G (10 – 2000 Hz) |
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