Product Description:

The RZR01.1-RD52-0880-S-R-FW frequency converter controller is produced by Bosch Rexroth Indramat within the RZR Frequency Converters series. In industrial automation, it functions as a regenerative mains inverter that channels returned energy from braking drives back to the supply instead of dissipating it as heat. The controller provides bidirectional power flow to support multi-axis machines, packaging lines, and test benches that require precise speed regulation together with energy recovery. It interfaces between the plant’s three-phase drives and the incoming mains so recovered power is synchronized, conditioned, and fed safely into the distribution network.

Electrically, the converter uses a single circuit topology that simplifies bus connections and minimizes wiring. Current and voltage vectors are processed by field-oriented vector control, so torque-producing and flux-producing components are regulated independently for fast dynamic response. The internal control boards are supplied from a logic rail that accepts 24 V ± 5%, while the power stage can return up to 880 A of regenerated current to the mains during peak deceleration events. The unit is identified as Design 1 and belongs to Line 01, which are compatibility identifiers used within the series. This arrangement supports controlled power feedback during repeated braking cycles without relying on resistor-based energy dissipation.

The unit draws a maximum control-side current of 12 A and is intended for continuous operation at ambient temperatures from 0 to 40 °C. The open housing has an IP20 protection class, so it guards against accidental contact but is not intended to block airborne dust. Conformity with 3K3 (DIN IEC 721-3-3) sets the allowable humidity and installation altitude for non-condensing atmospheres. With a mass of 6.5 kg, the assembly can be mounted on standard backplanes, and its thermal profile remains within range when forced convection is provided through the enclosure airflow channels.