Product Description:

The RZR01.2-RD52-0880-S-R-FW frequency converter controller is manufactured by Bosch Rexroth Indramat as part of the RZR Frequency Converters series. Installed between the drive DC bus and the plant mains, it channels regenerated power back to the supply instead of dissipating it in braking resistors. This role supports energy recovery and reduces heat inside automated machining cells, conveyors, and test stands that require controlled bidirectional power flow during deceleration and overhauling operation.

It accepts a supply of 24 V ±5% for its internal electronics and uses a single-circuit design identified as design 2 on line 01. The power stage can return up to 880 A of regenerated current to the mains while drawing only 12 A for its own control logic and cooling fans. Drive torque is modulated through field-oriented vector control, which separates stator current into flux and torque components for stable response during changing load conditions. The housing carries an IP20 protection class, so the unit must be installed in a switch cabinet that is protected from conductive dust and direct contact with live parts.

The permissible ambient temperature is 0 to 40 °C, which matches indoor control rooms and enclosed equipment racks covered by the 3K3 (DIN IEC 721-3-3) environmental class. As a regenerative mains inverter, the module feeds recovered kinetic energy back through the facility transformer instead of converting that energy into waste heat inside external braking hardware. The chassis weighs 6.5 kg, which keeps the module manageable for cabinet installation while still supporting a rigid mounting arrangement. Mounting points are concentrated near the rear edge, so cable routing can stay clear of the heat sinks and support short DC-bus connections to neighboring drive inverters.