The VW3A3E315 is a BACnet communication card for the Altivar 61 Plus drive series. It plugs into the drive's option slot to give the drive a BACnet MS/TP fieldbus connection over a 9-way female SUB-D connector. Two LEDs on the face — one for COM (network traffic) and one for ERR (fault) — give you a quick visual on link status without needing to pull up the drive keypad.
Mounting is straightforward: the card slides into the dedicated communication slot on the Altivar 61 Plus controller. The 9-way female SUB-D connector is the BACnet MS/TP physical layer — standard twisted-pair RS-485 wiring, polarity-sensitive. If you're commissioning a replacement, make sure the drive firmware is recent enough to recognize the BACnet option; older firmware revisions may need an update before the card initializes.
