This user guide provides detailed instructions for installing and configuring the DeviceNet communication card (VW3 A3 309) for Altivar 61/71 drives. The manual covers hardware setup, network wiring, configuration methods using both drive HMI and network tools, diagnostics, and troubleshooting. It includes information on supported DeviceNet objects, assembly configurations, and programming examples for PLC integration. The guide helps users establish proper communication between Altivar drives and DeviceNet networks with various control profiles including ODVA AC drive profile and Allen-Bradley drive profile. AI-assisted summary (Full document authored and validated by Schneider Electric experts).