Product Description:

The RZR01.2-RD52-0610-S-R-FW is a frequency converter controller produced by Bosch Rexroth Indramat for the RZR Frequency Converters series. It acts as a regenerative mains inverter, returning surplus motor energy to the utility line during braking sequences. In automated handling or conveyor stations, this reduces resistor-bank heat and lowers overall energy use. It manages energy flow on a common DC bus so braking energy from connected axes can be fed back to the line instead of being dissipated as heat. The device is design version 2 in line 01 of the platform, and it uses single-path power electronics to coordinate drive modules connected to the same DC bus.

This model works from a control supply of 24 V ± 5%, which powers the gate drivers and logic before the main link is energized. This control supply also supports startup checks and status monitoring before the power section is enabled. Its power module can deliver up to 610 A of phase current, allowing short-term regeneration into shared DC links. Vector calculations are executed by a digital signal processor that implements field-oriented vector control, enabling direct torque regulation under changing loads. The housing has an IP20 protection class suitable for cabinet environments. Even with this capability, the converter weighs only 6.5 kg, so it can be mounted without additional support frames.

Operation is specified for ambient conditions between 0 – 40 °C, which helps limit thermal stress on semiconductor junctions and filter capacitors. Compliance with environmental category 3K3 (DIN IEC 721-3-3) means the unit tolerates moderate humidity and limited dust typical of control rooms. A single power channel draws a continuous auxiliary current of 12 A, so control-supply wiring can remain light while still supporting startup and diagnostic cycles. This arrangement suits regenerative multi-axis systems that share a common DC bus.