Product Description:

The 178B3026 is a Danfoss AC variable-frequency drive supplied within the VLT 2800 Low Voltage Drives series. It modulates the speed of small-to-medium induction motors used in process equipment, allowing controllers to match pump or fan output to real-time demand while operating from standard utility power. By synthesizing a variable three-phase output waveform, the unit can improve energy efficiency and reduce mechanical wear in automated installations.

This model is rated for a single-phase mains connection at 200–240 V AC, so it fits facilities where only light-duty service power is available. The electronics sit in a narrow book-style housing that conserves panel width, and the assembly carries an IP20 protection rating that helps prevent accidental contact with live parts when the drive is installed inside an enclosure. A Profibus DP interface operating at up to 12 MBaud lets a PLC issue start, stop, and speed commands over the plant fieldbus, reducing the need for hardwired I/O. The compact enclosure and network connection support installation in ordinary control cabinets that provide suitable protection from contaminants.

An internal RFI stage meets EN 55011 Class A1 emission limits, so additional filters are normally unnecessary when the motor cable is short. Parameters are set through the built-in display (SLCP), which shows speed, operating status, and alarms without requiring external tools. The drive has a standard configuration with a brake, allowing a dynamic brake resistor to absorb regenerated energy during rapid deceleration. Its uncoated circuit boards make the drive appropriate for clean, dry control rooms rather than corrosive environments. The process application profile has no dedicated application option installed, leaving the controls suitable for a range of general-purpose duty cycles.