The Schneider VW3A3420 is a high-performance digital encoder interface module designed for Altivar Process ATV900, Altivar Machine ATV340, and Altivar Modular drive systems. It enables advanced closed-loop motor control by supporting multiple encoder technologies, including incremental, SSI, and EnDat 2.2 encoders, making it one of the most flexible feedback solutions in the Altivar range.
This module significantly improves speed accuracy, torque stability, and dynamic response, especially in demanding industrial automation and process control applications.
Technical Specifications
| Specification | Detail |
|---|---|
| Model | VW3A3420 |
| Module Type | Digital Encoder Interface Module |
| Compatible Drives | ATV900 / ATV340 / Altivar Modular |
| Communication Type | RS422 / TTL encoder interface |
| Supported Encoder Types | EnDat 2.2 / SSI absolute / Incremental A/B/I |
| Supply Voltage | 5 V / 12 V / 24 V DC selectable |
| Voltage Range | 4.75–5.25 V / 11.4–12.6 V / 22.8–25.2 V |
| Max Supply Current | ≤0.25 A (5 V), ≤0.1 A (12 V), ≤0.05 A (24 V) |
| Max Operating Frequency | Up to 1000 kHz |
| Cable Distance | Up to 100 m (varies by encoder type) |
| Connector Type | 1 × high-density SUB-D 15 female |
| Input Signals | A+/A-, B+/B-, I+/I-, Data+/Data- |
| Protection Functions | Short-circuit + overload protection |
| Installation | Internal plug-in option card |
| Power Supply | Provided by drive backplane |
| Dimensions (L×W×H) | 160×90×40 mm |
| Weight | 0.15 kg |
| Operating Temperature | 0 °C to 50 °C |
| Storage Temperature | −25 °C to 70 °C |
| Protection Rating | Internal installation (drive enclosure) |
Recommended Related Models
| Model | Why It’s Recommended |
|---|---|
| VW3A3401 | RS422 encoder card (simpler incremental feedback) |
| VW3A3407 | 24 V push-pull encoder interface option |
| VW3A3307 | Profibus DP communication card |
| VW3A3327 | PROFINET communication card |
Popular Schneider Altivar Drives
| Model | Key Strength |
|---|---|
| Altivar ATV900 | Advanced process automation platform |
| Altivar ATV340 | High-performance machine control drive |
| Altivar ATV71 | Heavy-duty torque and motion control |
| Altivar ATV61 | Process and HVAC optimization drive |
