RD51.1-5B-007-L-DF-FW Bosch Rexroth Indramat
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MPN: R911203228
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The Bosch Rexroth Indramat RD51.1-5B-007-L-DF-FW is a drive controller in the RD 500 Drive Controllers series with a rated power of 7.5 kW and supports a voltage range of 500 V. It uses forced air cooling, features a built-in brake chopper, and has a U/f curve control type. The unit operates as a converter on 3-phase AC supply and includes a NAMUR terminal strip with external 24 V stand-by power.
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Product Description:
The RD51.1-5B-007-L-DF-FW is a drive controller produced by Bosch Rexroth Indramat within the RD 500 Drive Controllers series. Intended for cabinet installation in factory automation lines, it governs the voltage and frequency supplied to standard induction motors. This regulation supports repeatable speed profiles, position holding through external sensors, and smooth acceleration of material-handling equipment.
Electrically, the controller is rated for a continuous motor output of 7.5 kW, making it suitable for medium-power axes such as mixers, pumps, or small hoists. It accepts line voltages within the 500 V class and is fed through a three-phase AC converter front end, so the mains supply is rectified and processed by the internal IGBT bridge. Speed regulation is achieved with U/f curve control; the device maintains a proportional ratio between stator voltage and frequency to keep magnetic flux within safe limits across the operating range. Thermal management relies on forced air cooling, and the housing includes high-flow fans that draw cabinet air across the heat sink. This arrangement maintains semiconductor temperature without external liquid circuits and preserves the unit's power density.
A built-in brake chopper is integrated on the DC link so regenerative energy can be dissipated through an external resistor during rapid deceleration. Machine safety and control wiring connect to a NAMUR terminal strip with external 24 V standby power, permitting field devices to remain energized even when the main drive is idle. For condition monitoring, a dedicated channel provides current filter feedback (U6, V6, W6), allowing a PLC to verify harmonic suppression in each output phase. This controller belongs to Design Generation 1. That designation places it in the early RD 500 platform used with first-release option cards.
Frequently Asked Questions about RD51.1-5B-007-L-DF-FW:
Q: Does the RD51.1-5B-007-L-DF-FW include a brake chopper?
A: The RD51.1-5B-007-L-DF-FW drive controller has a built-in brake chopper for controlled braking operations.
Q: What is the rated power output of the RD51.1-5B-007-L-DF-FW?
A: This drive controller is rated for 7.5 kW, suitable for moderate power applications.
Q: What type of cooling does the RD51.1-5B-007-L-DF-FW utilize?
A: The RD51.1-5B-007-L-DF-FW uses forced air cooling for temperature regulation.
Q: What control type is featured in the RD51.1-5B-007-L-DF-FW drive controller?
A: It operates with U/f curve control, offering voltage to frequency relationship control for motors.
Q: What supply type and voltage range does the RD51.1-5B-007-L-DF-FW support?
A: This model requires a 3-phase AC supply and supports a voltage range of 500 V.
