Nidec Variable Frequency AC Drive / Servo Drive - Input Phase 3, Supply Voltage 380/480 V ac, 7-1/2 hp Normal Duty, Output Current 11 A Normal Duty, IP 20 Rating, 50/60 Hz, Open Loop Vector Control, Closed Loop Induction Motor Control, Regenerative Control, Servo Control, V/Hz Control, Rotor Flux Control