Product Description:

The VACONX4C40250C variable frequency drive is manufactured by Danfoss within the Low Voltage VACON X Drives series. Designed for panel or machine-mounted installations, it converts fixed mains power into a modulated output that allows control systems to match motor speed to process demand. By adjusting frequency and voltage in real time, the unit supports conveyor, pump, and mixer applications that require accurate torque regulation and reduced inrush current in industrial automation environments.

Electrical protection functions are centered on the DC link. The internal brake chopper activates at 776 Vdc, diverting excess energy to an external resistor. If regenerative energy continues to rise, the drive trips on overvoltage at 814 Vdc to protect its power devices. A shutdown occurs below 397 Vdc to prevent control loss during brownouts. The module carries a high-overload current rating of 27 A, allowing short bursts beyond the nominal load, and it can supply up to 15 kW of mechanical power in that mode. Forced-air cooling moves heat across finned surfaces, while the T2 frame designation indicates the mounting arrangement used for the drive.

The housing measures 442 mm in height, 273 mm in width, and 201 mm in depth. Its mass is 13.38 kg, allowing placement inside compact enclosures without heavy reinforcement. For continuous duty, the drive operates in the low-overload range, providing 34 A of output current and 18.5 kW of shaft power while remaining within the thermal limits supported by forced-air cooling. The input section withstands a mains voltage variation of ±15% and remains synchronized when the line frequency varies by ±2 Hz. This tolerance allows connected machinery to continue operating during common variations in plant power. The stable electrical output supports general-purpose motors used in processes that require consistent torque under changing supply conditions.