Product Description:

The RS51.1-4G-006-L-V1-FW/S117 is a basic drive controller manufactured by Bosch Rexroth Indramat within the RD 500 Drive Controllers series. Acting as the power conversion stage in an automation cell, it receives three-phase AC, shapes the output waveform, and allows precise speed adjustment of connected induction motors. By providing programmable acceleration and deceleration ramps, the unit supports coordinated motion in conveyors, mixers, and other process equipment that rely on variable-frequency operation. This operating role helps the drive maintain smoother motor behavior when process speed needs to change during normal machine use.

The drive accepts a line voltage window of 380 to 480 V and is intended for a three-phase AC supply, making it compatible with standard industrial feeders. A regulation margin of ±10 % is tolerated before protective shutdown is triggered. Its power stage is rated at 6 kVA, fitting medium-power machines used in packaging or assembly lines. Motor excitation follows a U/f curve control method, which maintains a fixed voltage-to-frequency ratio across the speed range. This control approach is well suited to applications that need dependable speed adjustment rather than highly dynamic servo-style response.

The drive includes a built-in brake chopper and resistor to dissipate regenerated energy during quick stops, so external dumping hardware is unnecessary. Heat removal is carried out through forced air cooling that channels fan-driven airflow across the heat sink. Control electronics can remain active after a mains outage because the unit supports 24 V standby power from an external supply, preserving diagnostics and communication functions. For electromagnetic compatibility, the converter also uses an integrated mains filter, which can simplify panel integration and reduce conducted interference on the supply line.