Parameters (Specifications) Brand: Emerson (Control Techniques) Model Number: US11R-0020 Product Series: Unidrive ES / Unidrive Standard (US series) Product Type: AC Variable Speed Drive / Inverter Power Rating: 2.2 kW (3 HP) (typical for "0020" designation) Input Voltage: 200-240 VAC single-phase or three-phase (Check specific model for exact voltage range) Output Voltage: 0-240 VAC (proportional to input) Output Frequency: 0-400 Hz (typical) Number of Phases: 3-phase output Control Mode: V/Hz (Volts per Hertz) or sensorless vector (depending on model) Overload Capacity: 150% for 60 seconds (typical) Protection Rating: IP20 (for enclosure mounting) Cooling: Forced air cooling with internal fan I/O Configuration: Digital Inputs: 4-6 (configurable) Digital Outputs: 2 (relay or transistor) Analog Inputs: 1-2 (0-10V, 4-20mA configurable) Analog Output: 1 (0-10V or 4-20mA) Communication: Built-in Modbus RTU (RS-485) standard Braking: Built-in braking transistor (external resistor required) Ambient Temperature: 0°C to 40°C (32°F to 104°F), derated above Certifications: CE, UL, cUL (depending on region) Mounting: Panel mount (DIN rail or through-panel options may be available) Keypad: Integrated LED or LCD keypad for configuration and monitoring