Product pictures Product Overview: Emerson SP3402 Parameter Specification Manufacturer Emerson Order Number SP3402 Product Name High-performance AC drive / variable speed inverter Series / Family Unidrive SP (neighbouring codes include SP3402, SP3403, SP2401 and SP4401) Application & Fault Scenarios Suitable for 400V three-phase motors on winding, printing, packaging, textile and material handling drives requiring stable speed and precise torque. Typical faults: no display on