RD51.1-4B-007-D-NN-FW Bosch Rexroth Indramat
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MPN: R911200242
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The Bosch Rexroth Indramat RD51.1-4B-007-D-NN-FW is a drive controller from the RD 500 Drive Controllers series. It features a rated power of 7.5 kW and operates with a voltage range of 380 to 480 V, with a tolerance of plus or minus 10 percent. The controller uses U/f curve control and is equipped with an integrated mains filter and a built-in brake chopper.
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Product Description:
The RD51.1-4B-007-D-NN-FW drive controller is produced by Bosch Rexroth Indramat within the RD 500 Drive Controllers series. It serves as the power-conversion and motor-regulation element for three-phase induction machines in factory automation, packaging lines, and material-handling stations. By modulating the stator voltage and frequency, it allows precise speed adjustment, energy savings, and coordinated motion with higher-level PLCs. The unit fits inside control cabinets and interfaces with upstream mains supplies and downstream motors through standard industrial connectors.
Its control algorithm is based on U/f curve control, a proportional voltage-to-frequency relationship that keeps the air-gap flux constant so torque remains stable across the speed range. Thermal dissipation is handled by a plug-through cooler for units up to 110 kW; this arrangement passes the heat sink through the panel wall so most losses exit the enclosure and reduce cabinet heat. The drive delivers 7.5 kW of rated output power, matching mid-frame motors used on pumps, blowers, and small extruders. It is intended for grids from 380 to 480 V and tolerates line variations of ±10%, permitting operation where supply levels fluctuate. Design generation 1 hardware supports these electrical characteristics.
In addition to power conversion, the controller has an integrated mains filter that attenuates emissions and allows installation without external RFI components. Deceleration energy is processed by a built-in brake chopper, which diverts excess DC bus voltage to a user-selected braking resistor. The input stage uses a 3 x AC converter that rectifies the three-phase network before generating a modulated output waveform. The required software is supplied as firmware ordered separately. Additional function blocks are not included, so extended operating behavior depends on the software package selected for the application.
Frequently Asked Questions about RD51.1-4B-007-D-NN-FW:
Q: Does the RD51.1-4B-007-D-NN-FW include a brake chopper?
A: The RD51.1-4B-007-D-NN-FW features a built-in brake chopper for braking energy management.
Q: What voltage range is supported by the RD51.1-4B-007-D-NN-FW?
A: This drive controller supports a voltage range from 380 to 480 V for versatile operation.
Q: What is the rated power output of the RD51.1-4B-007-D-NN-FW?
A: The RD51.1-4B-007-D-NN-FW offers a rated power output of 7.5 kW.
Q: What type of cooling system is used in the RD51.1-4B-007-D-NN-FW?
A: This model uses a plug-through cooler for efficient thermal management on devices up to 110 kW.
Q: Does the RD51.1-4B-007-D-NN-FW include a mains filter?
A: The RD51.1-4B-007-D-NN-FW comes equipped with an integrated mains filter for electrical noise reduction.
