Inverters & Converters

About this product 7.5 kW 34 A 10 HP Frequency Inverter: This frequency inverter converts a single-phase AC input of 220-240 V into a three-phase AC output of 220-240 V, enabling speed control of many three-phase motors where only a single phase is available at the point of use. The output frequency is adjustable from 0 to 400 Hz, and the input frequency is either 50 or 60 Hz. Smooth ramps for starting and stopping reduce mechanical stress on belts, bearings, and gears, while stable control ensures smooth motor operation. Suitable for applications such as compressors, fans, pumps, lathes, or milling machines where precise torque and speed adjustment is required. Note: External braking resistors are not supported. The 34 A rating is suitable for motors up to 7.5 kW at 220 V, depending on the load profile and parameter settings. ``` Control panel with 7.9" cable: The intuitive keypad with its easy-to-read display allows for quick parameterization of motor and ramp values, as well as direct frequency setting via the controller. For systems where the inverter is located in a control cabinet, the control panel can be detached and routed to an accessible location using the 7.9" connection cable. This allows for convenient control of start, stop, direction of rotation, and frequency from the operator's position without opening the control cabinet. The included manual provides support for typical settings such as acceleration and deceleration times, minimum and maximum frequencies, motor data, and control mode. This makes the device suitable for both retrofits and new machine installations where clear operating logic is required. The remote display is also practical for maintenance procedures, as status and messages are immediately visible. Protection functions and circuit board coating: The inverter features a multi-stage protection package against overcurrent, overload, overvoltage, phase failure, and other typical motor operating disturbances. This helps prevent failures caused by power fluctuations, incorrect wiring, or unexpected load peaks. Additionally, the circuit board is triple-coated for increased resistance to dust and moisture – a significant advantage in workshop environments or when installed near machinery. Together with clear terminal labeling and robust connections, this ensures reliable long-term operation. For trouble-free operation, the power supply, motor wiring, and grounding should be professionally installed, and the motor data should be entered correctly. For frequent starts, a suitable ramp-up time is recommended to further smooth current peaks. Cooling and ventilation: A powerful fan quickly dissipates heat during extended use, ensuring stable operation of the electronics even under heavy load. The housing features multiple ventilation openings to promote airflow and heat dissipation from various directions. Simultaneously, the fan design is optimized for quiet operation – ideal for workshops, garages, or utility rooms. Thanks to its compact design and a net weight of approximately 3.5 kg, the frequency converter can be easily mounted in a control cabinet or on a wall. For optimal cooling performance, sufficient should be maintained around the ventilation surfaces, and the ambient temperature should be within the permissible range of 10 to 40 °C. This ensures that the temperature reserve is maintained even under fluctuating loads and high output frequencies. Applications for three-phase motors: Whether compressor, lathe, fan, milling machine, conveyor technology, or other three-phase applications – the VFD enables finely graduated speed control, which can improve energy consumption and process control. The freely selectable output frequency also allows for the implementation of special speeds, for example, for material processing or test benches. The 7.5 kW and 34 A rating is compatible with many 220 V motors; a larger power reserve may be beneficial for high starting torques or highly variable loads. Please note: A connection for external braking resistors is not provided. For applications with frequent rapid stops, suitable deceleration ramps and appropriate mechanical components should be used. This makes the device particularly suitable for conversions from fixed speed to variable speed operation. Specifications Item Model Number: AT1-7500X Power: 7.5 kW Power (HP): 10 HP Rated Current: 34 A Input Voltage: AC 220-240 V single-phase Output Voltage: AC 220-240 V three-phase Input Frequency: 50 or 60 Hz Output Frequency: 0-400 Hz Operating Temperature: 10-40 °C Net Weight: 3.5 kg ± 3% Scope of Delivery 1 x 10 HP Frequency Inverter 1 x User Manual