HMF01.1A-N0K2-D0145-A-500-NNNN Bosch Rexroth Indramat
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MPN: R911305856
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The Bosch Rexroth Indramat HMF01.1A-N0K2-D0145-A-500-NNNN is part of the HMF Motor Filters series and supports a continuous output current of 145 Amps. This filter has a maximum output voltage of 1.2 kV and a maximum output current of 210 Amps. It measures 400 mm in height, 350 mm in width, and 260 mm in depth, with a mass of 20 kg.
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Product Description:
The HMF01.1A-N0K2-D0145-A-500-NNNN is a three-phase motor output filter produced by Bosch Rexroth Indramat for its HMF Motor Filters series. Mounted downstream of an IndraDrive inverter, the filter shapes the voltage waveform delivered to the motor windings so that insulation stress and conducted emissions stay within prescribed limits. Within automated machining cells or handling axes, the device’s primary role is to protect cable insulation and motor bearings while helping the drive system meet electromagnetic compatibility targets. It is passive and needs no external supply.
The filter is dimensioned for a continuous output current of 145 A, which matches high-power servo modules operating at their rated load. For acceleration peaks, it can accommodate up to 210 A without exceeding thermal limits. The output bus may rise to a maximum of 1.2 kV, yet the internal inductive network limits the dv/dt to less than 1 kV/µs; this mitigation prevents premature winding aging and reduces capacitive discharge in cable shields. Designed to pair with drives that switch at 4 kHz, the filter’s inductive reactance smooths the pulse-width-modulated waveform and maintains a harmonic-free line-to-line voltage. An insulation resistance of 1 MΩ provides a basic verification of dielectric integrity under these conditions.
The housing measures 400 mm high, 350 mm wide, and 260 mm deep, and the assembly weighs 20 kg. When bolting the terminals, a connection torque of 25 Nm secures the conductor lugs against vibration. Internally, each phase presents an inductance of 3 × 50 µH, allowing the filter to suppress switching products up to the controller’s maximum motor frequency of 200 Hz. Under steady-state loading, the core and windings dissipate 220 W, and that heat must be removed by enclosure airflow to keep internal temperature within operating limits.
