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Schneider Electric VW3A3420 Altivar RS422 Digital Encoder Interface Module VFD Accessory
Schneider Electric VW3A3420 Altivar RS422 Digital Encoder Interface Module VFD Accessory
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- Description
The Schneider Electric VW3A3420 is a digital encoder interface module that connects an RS422-compatible incremental encoder, SSI absolute encoder or EnDat 2.2 encoder to Altivar Process ATV900, Altivar Process Modular and Altivar Machine ATV340 drives. It supplies 5 V, 12 V or 24 V DC to the encoder and accepts feedback through a female SUB-D15 connector, at an operating frequency of up to 1000 kHz.
Technical Specifications
| Reference | VW3A3420 |
| Brand | Schneider Electric |
| GTIN | 3606485441252 |
| Range | Altivar |
| Product or Component Type | Digital encoder interface module |
| Range Compatibility | Altivar Process ATV900, Altivar Process Modular, Altivar Machine ATV340 |
| Communication Port Protocol | RS422 |
| Encoder Type | EnDat 2.2, A/B/I incremental (type R or type X), SSI absolute (type SG or type SB) |
| Rated Supply Voltage (Us) | 5 V DC (4.75-5.25 V), 12 V DC (11.4-12.6 V), 24 V DC (22.8-25.2 V) |
| Maximum Supply Current | 0.25 A at 5 V DC, 0.1 A at 12 V DC, 0.1 A at 24 V DC |
| Protection Type | Short-circuit protection, overload protection |
| Maximum Cable Distance | 100 m (A/B/I and SSI), 50 m (SSI at 300 kHz, EnDat 2.2 without compensation) |
| Maximum Operating Frequency | 1000 kHz |
| Input Impedance | 121 Ohm |
| Connector Type | 1 female high-density SUB-D 15 |
| Net Weight | 0.15 kg |
Selection Notes
Choose the VW3A3420 when the motor feedback device outputs a digital RS422 signal - incremental A/B/I, EnDat 2.2 or SSI absolute - rather than an analog SinCos or resolver signal. The module's 1000 kHz maximum operating frequency and up to 100 m cable run make it suitable for high-resolution position loops on ATV900 and ATV340 applications.