Product Description:

Bosch Rexroth Indramat manufactures the RS51.1-4G-014-T-V1-FW basic drive within the RD 500 Drive Controllers series. The device functions as an AC converter that supplies regulated power to induction motors, allowing automation equipment to vary speed and torque without mechanical gear changes. This supports smoother starts, controlled ramping, and process adjustment in conveyors, mixers, pumps, and ventilation systems. By integrating power electronics and control logic into a single frame, the product streamlines cabinet layouts for material-handling lines and other industrial machinery.

The drive accepts a three-phase AC supply, meaning the mains are rectified and inverted inside the unit rather than by an external module. Its permissible line window is 380 to 480 V, and the input can fluctuate within a ±10% band before derating occurs. Once energized, the inverter delivers up to 14 kVA of apparent power, which is suitable for medium-duty motor loads that need stable output over long run times. Motor excitation follows U/f curve control, a method that scales output voltage in proportion to frequency so stator flux remains stable across the speed range. This operating method helps preserve low-speed torque and reduces the risk of overheating during steady operation.

A built-in brake chopper and resistor dissipate regenerated energy during rapid stops, so no external braking module is required for routine deceleration. Harmonic suppression is handled by an integrated mains filter that reduces conducted emissions on the supply cable and helps the drive fit typical plant power installations. Control electronics can remain active through a 24 V standby power input, which allows communication and parameter access when the main circuit is isolated. The unit is part of design generation 1, which identifies its placement within the early RD 500 hardware range.