RD51.1-4B-007-L-C1-FW Bosch Rexroth Indramat
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MPN: R911200357
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The Bosch Rexroth Indramat RD51.1-4B-007-L-C1-FW is a drive controller in the RD 500 Drive Controllers series with a rated power of 7.5 kW and operates on a voltage range of 380 to 480 V. It features U/f curve control, a built-in brake chopper, and uses forced air cooling.
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Product Description:
The RD51.1-4B-007-L-C1-FW is a drive controller produced by Bosch Rexroth Indramat within the RD 500 Drive Controllers series. It regulates the voltage and frequency supplied to three-phase motors, allowing speed adjustment in conveyors, pumps, and general motion axes across automated plants. The drive is intended for variable-speed applications that need controlled acceleration, deceleration, and steady running behavior. As part of Design Generation 1, the controller belongs to the first design release of this product line.
The unit accepts mains power through a 3 x AC converter front end; this architecture rectifies and re-inverts grid energy so the output frequency can follow the selected control law. Its operating window spans 380 to 480 V, and the hardware tolerates line variations of ±10 %, keeping the drive functional during common voltage dips or surges. The inverter section is rated for 7.5 kW of mechanical shaft power, matching mid-range asynchronous motors used in ventilators or agitators. Speed reference is generated with U/f curve control, which maintains a fixed ratio between stator voltage and frequency. An integrated mains filter attenuates conducted emissions, and the controller terminals support the external EMC network recommended for CE installations.
Dynamic braking energy is dissipated by a built-in brake chopper, so no external resistor switchgear is needed for rapid deceleration cycles. Input harmonics are further suppressed by the integrated filter section, reducing interference with nearby PLC or sensor wiring. Thermal management relies on forced air cooling; fans draw cabinet air across heat sinks to support continuous operation under load. For the control electronics, a separate 24 V standby power input keeps parameter memory and fieldbus nodes energized when the main supply is isolated. This arrangement keeps communication circuits active during mains isolation and preserves stored settings for the next start command.
Frequently Asked Questions about RD51.1-4B-007-L-C1-FW:
Q: What braking feature is included in the RD51.1-4B-007-L-C1-FW drive controller?
A: This model features a built-in brake chopper for energy dissipation during braking cycles.
Q: What type of motor control does the RD51.1-4B-007-L-C1-FW offer?
A: The RD51.1-4B-007-L-C1-FW provides U/f curve control for variable frequency motor applications.
Q: How is the RD51.1-4B-007-L-C1-FW drive controller cooled?
A: Forced air cooling is used in this drive controller to maintain optimal operating temperatures.
Q: What is the rated output power of the RD51.1-4B-007-L-C1-FW drive controller?
A: The RD51.1-4B-007-L-C1-FW has a rated power of 7.5 kW.
Q: What supply voltage range does the RD51.1-4B-007-L-C1-FW support?
A: The voltage range supported by this drive controller is 380 to 480 V AC.
