Product pictures Product Overview: Emerson SPMD1401 Parameter Specification Manufacturer Emerson Order Number SPMD1401 Product Name High-performance AC drive / variable speed inverter Series / Family Unidrive SP (neighbouring codes include SP3402, SP3403, SP2401 and SP4401) Application & Fault Scenarios Used in 400 V modular drive systems where DC/AC inversion is required, especially common DC bus, AFE, regenerative braking and multi-module cabinet builds. Typical faults: no