Product Description:

The 178B2377 is a wall-mounted frequency converter manufactured by Danfoss for the FCD 300 Micro Drives series. Classified as an FCD 300 product, it combines an inverter, local controls, and protective functions in one housing that installs directly on equipment. The unit is intended for processing applications where decentralized speed control reduces cabinet wiring and simplifies system expansion. By managing acceleration, deceleration, and basic input and output functions at the point of use, it supports mixers, conveyors, and dosing equipment on production lines.

Electrical capability centers on a three-phase input of 3 x 380–480 V, allowing direct connection to standard industrial power systems. The power module delivers up to 0.75 kW of continuous output, corresponding to a shaft rating of 1.0 HP for compatible induction motors. A molded enclosure rated at IP66 blocks dust and powerful water jets, so the converter can be installed near washdown zones without an additional cabinet. For networked control, an integrated Profibus DP V0/V1 interface operating at 12 Mbaud exchanges setpoints and diagnostic data with higher-level PLCs. Conducted emissions are attenuated by the integral 1A filter, supporting compliance with industrial electromagnetic compatibility limits without an external filter.

The converter has the Extended option with an external 24 V supply, which keeps the control electronics energized during a loss of mains power so fieldbus communication can remain active. Connections are accessed through a wall-mounted terminal box with metric threads, simplifying cable-gland selection for installations that use metric fittings. The converter has no integrated display, so configuration and monitoring are performed through the network or a compatible remote keypad. A standard protective coating guards the internal circuit boards against airborne moisture and chemical residue commonly found in processing facilities.