RD51.1-4B-015-L-NN-FW Bosch Rexroth Indramat
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MPN: R911200306
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The Bosch Rexroth Indramat RD51.1-4B-015-L-NN-FW is a drive controller from the RD 500 Drive Controllers series. This unit features a rated power of 15.0 kW and supports a voltage range from 380 to 480 V with a tolerance of ±10 percent. It includes a built-in brake chopper, integrated mains filter, and uses forced air cooling.
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Product Description:
The RD51.1-4B-015-L-NN-FW is a drive controller produced by Bosch Rexroth Indramat for the RD 500 Drive Controllers series. It is intended for variable-speed regulation of three-phase induction motors in automated machinery, where accurate motor torque and speed are required for conveyors, pumps, or process equipment. By shaping the output waveform and managing energy flow between the supply and the motor, the unit serves as the central power interface between the plant’s electrical network and its mechanical motion components. This allows the connected motor to respond to changing process demands without being limited to fixed-speed operation.
This controller accepts a line supply range of 380 to 480 V, and the permissible line fluctuation is limited to ±10 %, so the unit remains stable on grids that deviate slightly from nominal voltage. The internal power stage is rated for 15.0 kW, giving it capacity for medium-power axis drives. It is built as a 3 x AC converter, which rectifies the incoming three-phase supply and then inverts it to adjustable frequency and amplitude for the motor windings. Speed modulation follows a U/f curve control characteristic, which keeps the ratio between stator voltage and frequency constant and helps maintain magnetic flux during wide speed changes.
An integrated mains filter suppresses conducted emissions, helping the installation meet electromagnetic compatibility guidelines without external components. Thermal management is handled by forced air cooling, in which a dedicated fan moves air across the heat sink to remove losses generated at the switching devices. Dynamic braking is supported by a built-in brake chopper, allowing excess kinetic energy to be dissipated into a resistor during rapid deceleration. This model is part of Design Generation 1, indicating the first design generation for this controller type.
Frequently Asked Questions about RD51.1-4B-015-L-NN-FW:
Q: Does the RD51.1-4B-015-L-NN-FW include a built-in brake chopper?
A: The RD51.1-4B-015-L-NN-FW has an integrated brake chopper for controlled braking.
Q: What type of control does the RD51.1-4B-015-L-NN-FW use?
A: This drive controller utilizes U/f curve control for motor operation.
Q: How is the RD51.1-4B-015-L-NN-FW cooled?
A: The RD51.1-4B-015-L-NN-FW employs forced air cooling for heat dissipation.
Q: What is the rated power output of the RD51.1-4B-015-L-NN-FW?
A: Its rated power output is 15.0 kW for industrial applications.
Q: What voltage range does the RD51.1-4B-015-L-NN-FW support?
A: This model operates on a supply voltage range of 380 to 480 V AC with a ±10% tolerance.
