RD51.1-5B-007-L-C1-FW Bosch Rexroth Indramat
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MPN: R911200470
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The Bosch Rexroth Indramat RD51.1-5B-007-L-C1-FW is a drive controller from the RD 500 Drive Controllers series, offering a rated power of 7.5 kW and supporting a voltage range of 500 V. It features a built-in brake chopper, U/f curve control, and uses forced air cooling. The unit operates with a converter 3 x AC supply and provides 24 V external stand-by power for systems up to 110 kW.
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Product Description:
The RD51.1-5B-007-L-C1-FW is a drive controller manufactured by Bosch Rexroth Indramat for the RD 500 Drive Controllers series. Cabinet-mounted behind the motor starter section, it converts fixed-frequency plant power into a variable, synchronized output that matches the torque and speed requirements of asynchronous motors. Within automated conveyor lines, pump skids, and general-purpose machinery, the unit regulates acceleration ramps, limits inrush currents, and delivers repeatable speed profiles under PLC supervision. This arrangement allows the connected motor to respond smoothly to changing process demand without relying on mechanical throttling methods.
The controller uses U/f curve control, so output voltage rises linearly with frequency to help preserve motor flux as shaft speed changes. Thermal load is managed by forced-air cooling, which directs fan-driven airflow across heat sinks to maintain semiconductor junction temperatures. A built-in brake chopper diverts regenerated energy to an external resistor and helps prevent DC-bus overvoltage during rapid deceleration. Mechanical output is rated at 7.5 kW, which suits mid-frame fans, centrifugal pumps, and similar industrial loads. The power section is designed for AC networks in the 500 V range, giving margin for standard 400 V motors while remaining within normal insulation limits.
Incoming power is rectified through a 3 x AC converter front end, so balanced three-phase supply wiring is required. For control and fieldbus hardware, the unit provides 24 V stand-by power, allowing parameter access even when the main inverter is offline. The housing is marked Design Generation 1, which identifies the product generation used for this unit. Application software is ordered separately, so the drive can be matched to the required control functions without loading unnecessary features. This auxiliary supply supports installations up to 110 kW and keeps low-voltage electronics available during main power interruptions.
Frequently Asked Questions about RD51.1-5B-007-L-C1-FW:
Q: Does the RD51.1-5B-007-L-C1-FW include a brake chopper?
A: The RD51.1-5B-007-L-C1-FW features a built-in brake chopper for effective braking and energy dissipation.
Q: What control type is used by the RD51.1-5B-007-L-C1-FW drive controller?
A: The RD51.1-5B-007-L-C1-FW operates with U/f curve control for its motor regulation.
Q: What cooling method is employed in the RD51.1-5B-007-L-C1-FW?
A: This drive controller uses forced air cooling to manage its operating temperature.
Q: What is the rated power output of the RD51.1-5B-007-L-C1-FW?
A: The RD51.1-5B-007-L-C1-FW has a rated power output of 7.5 kW, suitable for medium power applications.
Q: What supply voltage and type does the RD51.1-5B-007-L-C1-FW require?
A: The RD51.1-5B-007-L-C1-FW is designed for use with a 3-phase AC supply and operates within a 500 V voltage range.
