A90H incremental encoder
The A90H Ø90 mm Incremental Encoder is a high-precision optical angle encoder designed for demanding industrial and automation applications. It delivers up to 1,800,000 pulses per revolution, ensuring accurate and repeatable position feedback.
This encoder features a hollow shaft with integrated stator coupling and supports two mounting options: via shaft collar or central screw. With an accuracy of ±5 arc. sec, it provides exceptional reliability for high-performance motion control.
Key Features
Ø90 mm optical incremental encoder
Up to 1,800,000 output pulses per revolution
Hollow shaft with integrated stator coupling
Two mounting options: shaft collar or central screw
High accuracy: ±5 arc. sec
Maximum shaft speed: 3,000 rpm
Robust IP64 protection for industrial environments
Compact and lightweight design
Mechanical & Electrical Data
| Parameter | Specification |
|---|---|
| Number of output pulses per revolution | 18,000 – 1,800,000 |
| Line number on disc (z) | 18,000 |
| Reference signal | Standard: 1 per revolution; distance-coded: 36 per revolution |
| Permissible mechanical speed | ≤ 3,000 rpm |
| Max. operating speed | 600 – 1,000 rpm |
| Accuracy grades | ± 5.0 arc. sec |
| Permissible shaft runout | Axial: 0.02 mm; Radial: ±0.02 mm |
| Starting torque at 20°C | ≤ 0.08 Nm |
| Rotor moment of inertia | < 0.6×10⁻⁴ kg·m² |
| Protection (IEC 529) | IP64 |
| Maximum weight without cable | 1.2 kg |
| Operating temperature | 0…+70 °C |
| Storage temperature | –30…+85 °C |
| Maximum humidity (non-condensing) | 98% |
| Permissible vibration (55–2000 Hz) | ≤ 100 m/s² |
| Permissible shock (11 ms) | ≤ 300 m/s² |
