HNA05.1N-WR02F5-A4-A-NNNN

The HNA05.1N-WR02F5-A4-A-NNNN mains filter is produced by Bosch Rexroth Indramat for the HNS Mains Filter series. The unit is installed between the plant supply and the DC bus of Rexroth drive systems to smooth line disturbances, limit inrush current, and provide controlled energy storage for regenerative events in industrial automation cells. It occupies space in the converter panel and integrates with drive controllers to stabilize the intermediate-circuit voltage during rapid motor braking or acceleration. This arrangement reduces stress on upstream circuit breakers and helps protect sensitive electronics from voltage fluctuations.

The filter connects to a three-phase line rated at 400 V AC, and its internal logic is powered by a 24 V control supply that enables charging-circuit sequencing. A minimum line inductance of 40 µH is required to keep the input current within applicable electromagnetic compatibility limits. During normal operation, the assembly dissipates 50 W, while dissipation can reach 150 W during the initial charging cycle. Cabinet ventilation must accommodate the additional heat produced during this temporary operating condition. Continuous loading on the DC side is limited to 10 A, and upstream protection should use the recommended 16 A fuse. An IP20 housing protects against accidental contact and permits installation inside a standard electrical enclosure.

The energy-handling section supports capacitance values from 1 mF through 2.5 F when the bus voltage does not exceed 808 V. It can store 625 kWs of energy and complete a full recharge within the stated 240-second interval. An upper DC-bus limit of 900 V protects connected drives from excessive voltage. The filter measures 390 mm in height and 124.5 mm in width, allowing it to fit vertically within a converter cabinet. It bolts directly to the rear panel and operates without external fans, leaving adjacent cabinet space available for drive controllers and other system modules.