178B2139
by Danfoss
The 178B2139 is a decentral-mount AC drive produced by Danfoss within the FCD 300 Micro Drives series. Installed close to the motor it commands, this unit converts fixed mains power into variable frequency output so that conveyors, mixers, and other processing equipment can match speed to load without extra control cabinets. By embedding the power electronics in an IP-rated housing, the manufacturer eliminates long motor leads and reduces electromagnetic interference in automated process lines.
The drive connects to three-phase mains between 3x380-480V and converts that supply into a regulated output limited to 0.37 kW of electrical power. An IP66 enclosure rating allows direct wash-down on machinery frames without secondary enclosures, protecting the internal inverter against dust and high-pressure water. System controllers interface through Profibus DP V0/V1 3 Mbaud; this fieldbus link transports setpoints and status words at cycle times suited for synchronous process loops. Conducted emissions toward the mains are attenuated by a built-in integral 1A filter, which helps panels meet typical industrial EMC limits.
Mechanical output is defined as .50 HP, a value that aligns with auxiliary pumps or small augers often found in food and chemical plants. The board set is the Extended 24 V ext. hardware variant, giving an external 24 V backup so field I/O and bus communication stay active during mains drops. Operators rely on a host PLC because there is No display on the drive itself, a choice that simplifies the front cover and maintains the high seal rating. Field wiring passes straight through molded glands; there is No terminal box, which shortens installation time. Standard epoxy coating and a processing-application duty profile round out the package, making the unit suitable for continuous throughput environments where local mounting and minimal maintenance are priorities.
