178B8577 Danfoss
Wake Industrial LLC is not an authorized distributor of this product.
MPN: VLT2805PT4B20SBR0DBF00A00C1
The Danfoss 178B8577 is part of the VLT 2800 Low Voltage Drives series and has a power rating of 0.55 kW, supporting 0.75 HP at 380-480V, 3 phase, 50/60Hz mains voltage. This drive features a built-in display, bookstyle enclosure, standard hardware with brake, and IP20 protection rating.
Internal Product Review
The Danfoss 178B8577 is a VLT 2800 low-voltage drive configured for process duty with a standard brake package. Three-phase 380-480 V input and IP20 protection make the unit a practical choice for controlled panel installations.
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Product Description:
The 178B8577 is an AC variable frequency drive developed by Danfoss for the VLT 2800 Low Voltage Drives series. It converts fixed-frequency three-phase power into a controlled output so plant controllers can regulate motor speed and torque in conveyors, pumps, and other process equipment. The drive belongs to the VLT product group and is tuned for process duties, providing proportional-integral control modes that support stable flow and pressure loops.
The drive is rated at 0.75 HP, making it suitable for light pump or fan loads, while its continuous motor output power is 0.55 kW. It accepts a mains supply of 380–480 V ± 10%, 50/60 Hz and is intended for three-phase installations, allowing direct connection to common industrial feeders without autotransformers. Thermal design, creepage distances, and venting correspond to an IP20 enclosure, so the installation must provide additional shielding where airborne liquids or conductive dust are present. The proportional-integral control functions help maintain stable process variables when motor speed must respond to changing demand. Because the internal RFI filter is omitted, an external line filter or suitable cabinet shielding is required whenever compliance with electromagnetic compatibility directives is mandatory.
The book-style housing keeps the unit narrow, enabling dense side-by-side mounting without derating. Electronic assemblies have a protective coating that resists moisture and corrosive vapors commonly found in washdown areas. The drive is equipped with a standard brake chopper, providing a path for energy dissipation during rapid deceleration events. Operator interaction is handled through the built-in display (SLCP), which shows frequency, current, operating status, and alarm codes on the front panel. No application option is installed, and the fieldbus bay is vacant, so communication relies on hardwired input and output connections. Front-panel access allows operating values and fault information to be viewed without opening the surrounding electrical enclosure.
