The Schneider VW3A3401 is a high-precision encoder interface card designed for Altivar 61 and Altivar 71 variable speed drives, enabling advanced closed-loop motor control using RS422 differential encoder signals. It allows drives to process real-time speed and position feedback from rotary encoders, significantly improving torque accuracy, dynamic response, and low-speed performance in demanding industrial applications.
This module is widely used in vector control systems, lifting equipment, and high-performance motor applications where precise feedback is critical.
Technical Specifications
| Specification | Detail |
|---|---|
| Model | VW3A3401 |
| Module Type | Encoder Interface Card |
| Compatible Drives | Altivar 61 / 61Q / Altivar 71 / 71Q / Lift |
| Communication Type | RS422 differential encoder input |
| Encoder Supply Voltage | 5 V DC (5–5.5 V range) |
| Input Signals | A, B, /A, /B channels |
| Maximum Frequency | 300 kHz |
| Max Pulses per Revolution | Up to 10,000 PPR (drive dependent) |
| Cable Distance | Up to 50 m |
| Input Impedance | ~440 Ω |
| Protection Functions | Short-circuit and overload protection |
| Power Supply | Powered via drive backplane |
| Installation Type | Internal plug-in option card |
| Diagnostics | Status LEDs on drive interface |
| Dimensions (L×W×H) | 160×90×40 mm |
| Weight | 0.20 kg |
| Operating Temperature | 0 °C to 50 °C |
| Storage Temperature | −25 °C to 70 °C |
| Protection Rating | Installed inside drive enclosure |
Recommended Related Models
| Model | Why It’s Recommended |
|---|---|
| VW3A3307 | Profibus communication card for fieldbus integration |
| VW3A3327 | PROFINET Ethernet communication card |
| VW3A3316 | Modbus TCP communication module |
| Altivar 71 | High-performance vector control drive platform |
Popular Schneider Altivar Drives
| Model | Key Strength |
|---|---|
| Altivar ATV61 | Process control and HVAC applications |
| Altivar ATV71 | High-performance torque and speed control |
| Altivar ATV320 | Compact machine automation drive |
| Altivar ATV900 | Advanced process automation system |
