The Delta VFD185CP43B-21 is a CP2000-series fan/pump vector control drive rated for 18.5 kW (22 HP) motor capacity at 38 A output, fed from a 460 V 3-phase line.
The CP2000 series is Delta's dedicated fan/pump vector control platform, meaning the VFD185CP43B-21 carries pre-loaded pump curves and multi-pump cascade logic out of the box — no external PLC needed for basic pressure or level control. The 38 A continuous rating at 460 V matches a standard 18.5 kW induction motor; expect the DC bus to handle moderate overloads typical of centrifugal loads without the braking resistor that a constant-torque drive would need.