178B8582 by Danfoss

The 178B8582 is an AC variable frequency drive manufactured by Danfoss and positioned in the VLT 2800 Low Voltage Drives series. As a motor controller, the unit adjusts the speed of three-phase induction motors used in process lines, pumps, and conveyors, allowing plants to match motor torque to load and reduce energy waste. It integrates the control electronics and power stage in a compact chassis for installation inside standard control panels.

Its output is rated at 4.0 HP, which corresponds to 3.0 kW. The input mains window of 380-480 V ±10 % 50/60 Hz lets the same drive operate on common industrial low-voltage networks without tap changes. Internally, the converter rectifies a three-phase supply, so single-phase sources are not supported. An IP20 protection rating indicates that fingers and similar solid objects are barred from live parts while the enclosure remains open to natural cabinet airflow. Because the unit carries no application option card, no fieldbus plug-in, and no RFI filter, all wiring is done with standard terminal blocks and any EMC mitigation must be handled externally.

Physical layout follows the Bookstyle format, so multiple modules can mount side by side with minimal panel depth. A conformal layer is applied to the circuit boards, and the electronics package is supplied with a protective coating to reduce moisture-driven leakage currents in humid or dusty rooms. Operators interact through the built-in display (SLCP), which provides parameter entry and real-time readouts without an external keypad. For dynamic stop requirements, the hardware is supplied in a standard configuration with brake, ready to connect an external braking resistor. The drive targets process-oriented machinery, and because it lacks a fieldbus board, the local display and hard-wired I/O remain the primary command channels.