Product Description:

The RS51.1-4G-006-V-NN-FW is produced by Bosch Rexroth Indramat for the RD 500 Drive Controllers series. It is supplied as a standard drive controller that converts fixed-frequency three-phase mains power into a variable output suitable for controlling induction motors in automated machinery and material-handling cells. By adjusting motor speed through frequency modulation, the unit supports energy-efficient motion tasks and coordinated process sequencing on factory floors. This operating method also supports smooth speed changes in equipment that needs repeatable motor response during normal production.

A built-in protection stage allows regenerative energy to be dissipated through its built-in brake chopper and resistor, so external braking hardware is unnecessary for most deceleration profiles. Speed reference is processed with U/f curve control, which holds the voltage-to-frequency ratio constant to preserve motor torque across the working range. For electromagnetic compatibility, an integrated mains filter attenuates conducted noise before it returns to the grid. The inverter can deliver up to 6 kVA of output power, matching small and mid-frame motors used on conveyors, pumps, or fans. It accepts a line supply between 380 to 480 V, letting one product type cover common industrial distribution levels. The Functions option slot is not equipped, which keeps the configuration focused on basic open-loop operation. This layout is suited to applications that need adjustable motor speed without added control features.

The power section is rated as a Converter 3 x AC input, and its components are dimensioned to work within a line fluctuation window of ±10 % without derating. The unit is part of Design Generation 1. It is classified as a Basic Drive and is intended for standard motor-control tasks. This version is appropriate for installations that need straightforward speed control with a conventional three-phase supply.