Product Description:

The HNF01.1A-M900-R0094A-A-480-NNNN is a three-phase mains filter manufactured by Bosch Rexroth Indramat and supplied within the HNF Mains Filters series. The component is installed between a plant’s supply transformer and its drive controllers, where it attenuates high-frequency interference generated by pulse-width-modulated inverters and limits the feedback of switching energy to the utility line. By presenting low impedance for fundamental power frequencies and high impedance for unwanted noise, the filter helps sensitive automation electronics operate reliably on a shared distribution network. This arrangement also reduces the amount of electrical noise that can travel through the facility power system and affect nearby control hardware, sensors, and communication devices.

Rated for a nominal line current of 94 A, the HNF01.1A-M900 filter carries the full converter load without exceeding its thermal envelope. Its EMC performance is classified as C3, and the design follows the limiting values in DIN EN 61800-3, so conducted emissions remain below the thresholds accepted in industrial zones. One filter can serve motion systems with up to 15 axes, and the permissible combined motor cable and feedback cable length can reach 900 m. This supports layouts with long machine sections, remote motor locations, and centralized cabinets that supply multiple drive units from one line-side connection.

According to the supply system rating, the unit is intended for regenerative devices only, enabling controlled energy feedback when drives decelerate. The unit uses Design version 1, while internal coding places the device in generation 01 of the HNF platform. The mounting pattern and terminal assignment remain consistent across the filter range. This layout supports integration in cabinets that use coordinated multi-axis drive hardware and shared line-side components without requiring a different physical arrangement at the line input.