Product Description:

The RZR01.2-RD52-0880-P-M-FW belongs to the RZR Frequency Converters series produced by Bosch Rexroth Indramat. It is a frequency converter controller that supplies variable AC to plant motors for closed-loop speed or torque control. The device is in the second mechanical design stage and belongs to line code 01. Within an automation cell, it bridges the DC supply bus and three-phase loads, enabling precise vector-based acceleration and deceleration profiles without mechanical contactors. It is suited to applications where motor speed and torque must be adjusted continuously instead of running directly from fixed mains power.

Electrical interfacing starts with a logic supply of 24 V ± 5%, which powers the control boards and gate drivers even when the main bus is de-energized. Keeping the control section on this supply allows command handling and internal monitoring to remain active when the power stage is not operating. On the output side, the power stack can deliver a peak phase current of 880 A, giving the converter headroom for rapid motor magnetization during startup or heavy load swings. Current shaping relies on field-oriented vector control, which resolves stator and rotor flux in real time for smooth torque production. Internally, the IGBTs use a parallel circuit configuration to reduce conduction losses at high current. The housing has an IP20 protection class, so it must be mounted inside an enclosed panel with forced ventilation.

Thermal limits are set by an ambient operating range of 0 to 40 °C. The unit is intended for 3K3 (DIN IEC 721-3-3) conditions, which correspond to temperature-controlled production floors with moderate humidity and minimal dust. During continuous operation, the control electronics draw no more than 12 A from the auxiliary supply, which helps with upstream protection and power distribution planning. The converter weighs 6.5 kg, which helps limit structural loading in multi-axis cabinets. These installation limits indicate that the unit is meant for controlled indoor cabinet use rather than direct open mounting on the machine.