The 3AXD50001002718: The drive carries separate current ratings for three duty cycles: normal use at 5.6 A, light-overload at 5.3 A, and heavy-duty at 4 A. For a constant-torque HVAC load like a cooling tower fan, size against the heavy-duty figure — the 4 A rating gives you the thermal headroom for starting torque and sustained overload. The standby loss sits at 14 W, which matters for energy code compliance when the drive is idle but powered. Power factor is 0.98, so no external PF correction is needed for the drive itself. Efficiency is IE2 class, meeting the minimum for most commercial HVAC specs in Europe and APAC.
Built-in I/O and BACnet for BAS integration
This drive ships with 2 analog inputs, 2 analog outputs, and 6 digital inputs / 3 digital outputs — enough for a typical AHU or chiller pump sequence without an add-on I/O module. Communication is BACnet by default, which is the standard protocol for building automation systems. Note there is no onboard Industrial Ethernet port (0 hardware interfaces for that), so if your BAS backbone is BACnet/IP over Ethernet you will need the optional fieldbus adapter. The control unit is included in the package, so no separate ordering for the keypad.