Product pictures Product Overview: Emerson SP5402 Parameter Specification Manufacturer Emerson Order Number SP5402 Product Name Heavy-duty AC drive / variable speed inverter Series / Family Unidrive SP (neighbouring codes include SP5401, SP4402, SP4403 and SP6401) Application & Fault Scenarios Built for 400V three-phase motors on cranes, rolling mills, large conveyors, crushers, test benches and heavy process lines needing precise torque and speed regulation. Common problems: