178B1434
by Danfoss
The 178B1434 is an AC variable frequency drive produced by Danfoss for the VLT 2800 Low Voltage Drives series. It serves as the speed-control interface between a three-phase induction motor and the mains supply, allowing continuous process lines to match motor torque and speed to real-time load demands. The drive fits the VLT product group’s goal of compact, panel-mounted regulators that streamline cabinet layouts and simplify integration in decentralized automation.
This model accepts a mains window of 380-480 V ±10% 50/60 Hz on a 3 phase supply and converts it into a variable output that supports a mechanical load up to 1.0 HP. The electrical rating translates to a continuous shaft power of 0.75 kW, aligning with small pumps, fans, and conveyor stations. Installation depth is minimized by the Bookstyle enclosure, enabling dense side-by-side mounting in narrow control sections. The hardware configuration is supplied as standard, there is no application option installed, and the unit is delivered without a fieldbus option, so control is handled through conventional terminal I/O.
Environmental protection is listed at IP20, so the drive requires placement inside a closed cabinet and it is shipped without coating on the electronics. Conducted emissions are mitigated by the integrated EN 55011 A1 (IT-mains) RFI filter, which helps meet industrial EMC limits when long motor leads are present. Operators interface through a Built In Display (SLCP) that shows output frequency, status, and basic fault codes without external tools. The dedicated application flag is set to Process, indicating parameter sets that favor constant-torque loads common in mixers, agitators, and similar equipment.
