134H2365 by Danfoss

The 134H2365 is a low-voltage variable frequency drive manufactured by Danfoss for the VLT 2800 Low Voltage Drives series. The unit adjusts AC motor speed electronically, so pumps, fans, and conveyors can match process demand without mechanical gear changes. It varies output frequency and voltage together so connected induction motors can produce usable torque across a controlled speed range. Through pulse-width modulation, it supports steady acceleration and speed regulation while helping reduce startup current in automated equipment.

Its continuous output is 0.55 kW, which suits small pumps and conveyors without oversizing the supply network. Its motor output is also listed as 0.75 HP, providing a familiar horsepower reference for motor selection. Line terminals accept 380-480 V ±10% at 50 or 60 Hz, so the same unit can operate from common industrial supplies. The IP20 housing protects against accidental finger contact, and the slim Bookstyle frame minimizes panel width in enclosed panels. Because the enclosure is intended for cabinet installation, surrounding airflow remains important for heat removal. This variant includes a built-in SLCP display for local viewing of operating values and a factory-installed brake circuit for quicker deceleration of light rotating loads.

Communication is available through Profibus DP 12 MBaud, allowing parameter access and status messaging over standard twisted-pair cabling. The drive requires a three-phase input, which helps balance the rectifier and reduce harmonic content on plant mains. To limit conducted emissions, the unit includes an EN 55011 Class A1 RFI filter, so additional external filtering is often unnecessary in typical switchboard layouts. The electronics have a protective coating, which helps shield circuit boards from airborne humidity and fine dust. Networked control allows operating status and parameter changes to be exchanged with higher-level automation equipment. This supports installations where the drive is monitored as part of a distributed control system.