Product Description:

The 178B8587 is a low-voltage variable-speed drive produced by Danfoss for the VLT 2800 Low Voltage Drives series. The unit converts constant three-phase mains power into a controlled output that regulates induction motor speed in pump, fan, and conveyor applications within automated process lines. By integrating modulation electronics and motor protection functions inside a compact chassis, the drive provides a single-component solution for energy-efficient motion control tasks. Its output control allows connected equipment to operate at speeds suited to changing process demands rather than remaining at full speed continuously.

The drive delivers a mechanical output of 20 HP, which corresponds to a continuous electrical rating of 15.0 kW. It accepts a supply range of 380–480 V AC at 50/60 Hz, allowing installation on common industrial feeders without transformers. Operation requires a three-phase network, so balanced line conductors are necessary for full-load current sharing. The IP20 enclosure provides finger protection when the unit is installed inside a control panel. The lack of an internal RFI stage means that an external filter must be added when the installation requires control of conducted electromagnetic emissions. The drive is supplied without fieldbus or application options, making it suitable for dedicated process duties where drive-level networking is unnecessary.

The book-style housing allows multiple inverters to be mounted side by side while preserving airflow in shallow cabinets. Parameter access is provided through the built-in display (SLCP), which offers local readouts and keypad programming without requiring external tools. The electronics use a standard design with a brake, permitting connection of a braking resistor for applications that require rapid deceleration. A protective coating on the circuit boards helps resist humidity and airborne contaminants that could otherwise affect electronic components. The narrow housing format reduces the amount of panel space required for installations with several controlled motors. Local controls also provide direct access to operating values and adjustable parameters when network communication is not installed.