7.5 kW at 380-440 V — what the headline numbers mean on the Lexium 18
The Schneider LXM18MPDU75N4X is a motion servo drive in the Easy Lexium 18 family (device short name LXM18M), listed at 7.5 kW nominal power on a 380-440 V three-phase supply and rated 25.7 A continuous output current at the 8 kHz switching frequency. That 25.7 A continuous figure is the rating the integrator sizes the cabinet and the upstream breaker against, while the 65 A 3-second peak lets the drive handle accel/decel surges on cyclic loads without tripping. Line current draws 21 A at 380-440 V three phase, so on a 400 V industrial service this sits comfortably on a 32 A breaker and leaves margin for the inrush during pre-charge.
Mains input envelope and supply limits
Supply voltage limits are 342-484 V three phase, matching the 380-440 V -10...10 % rated window, with 50/60 Hz tolerance of -5...5 % and a network frequency acceptance of 47.5-63 Hz — the drive tolerates the wobble seen on a plant bus without dropping out.
Interface mix: Modbus, digital/analog I/O, PTI and PTO
The drive carries Modbus plus integrated digital I/O, analog I/O, PTI (pulse-train input) and PTO (pulse-train output) on the same unit — a position-following machine can wire step/direction into PTI and echo the encoder through PTO without an extra indexer card.
Cabinet footprint, thermal envelope and EMC posture
IP20 rating means the drive goes inside an enclosed cabinet, not on the machine surface, and ambient operation is 0...45 °C with no condensation — the standard panel-internal envelope.