Product Description:

The 175Z0149 frequency converter is manufactured by Danfoss within the VLT 5000 Frequency Converters series. The unit operates as an adjustable-speed drive that modulates AC input to regulate induction motor torque and speed for pumps, fans, or conveyors in automated installations. Its compact design allows integration into control cabinets where space is limited. Using internal power electronics, the converter maintains process stability, reduces mechanical stress, and supports energy-efficient operation across a broad range of industrial loads.

Energized by a 380–500 V three-phase supply, the drive can be installed on typical industrial mains without step-down transformers. Under a 110% overload condition, it delivers 5.5 kW of output power, providing headroom for transient torque demands, while at 160% overload, the continuous rating is 3.7 kW, matching moderate duty cycles with tighter thermal limits. The electronics are housed in a compact IP20 enclosure, so the unit must be mounted inside a closed cabinet to protect it from dust and prevent contact with live parts. To limit conducted emissions, an integrated Class A1 and Class B filter attenuates switching noise at the line terminals, helping the system meet EMC requirements in industrial areas.

Control functions are executed by a process control card, which provides standard analog and digital I/O for closed-loop regulation without additional plug-in options. Parameter changes can be made locally through the front-mounted keypad, while a supplied display shows status information, setpoints, and alarms during setup or service. The converter uses non-coated boards, so it requires installation in a dry, clean environment that will not expose the electronics to moisture or airborne contaminants. The lack of a fieldbus option means remote control signals must be wired through the terminal strips rather than communicated through PROFIBUS or another fieldbus module.