RD51.1-4B-004-L-CF-FW Bosch Rexroth Indramat
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MPN: R911200992
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The Bosch Rexroth Indramat RD51.1-4B-004-L-CF-FW is a drive controller from the RD 500 Drive Controllers series. It features a built-in brake chopper and utilizes U/f curve control. The controller operates with a 3-phase AC supply voltage range of 380 to 480 V and has integrated mains filtering with forced air cooling.
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Product Description:
The RD51.1-4B-004-L-CF-FW is a drive controller produced by Bosch Rexroth Indramat within the RD 500 Drive Controllers series. Installed in a control cabinet, it sits between the three-phase mains and an induction motor, shaping voltage and frequency so conveyor sections, pumps, or mixers operate at commanded speeds. In industrial automation, this device provides the power stage required for closed-loop speed or torque regulation, while higher-level PLC logic manages process sequencing and setpoint changes across varying load conditions.
The controller accepts a three-phase input of 380 to 480 V and continues to operate correctly when line voltage varies by up to ±10 %. It is designed for a 3 x AC converter supply topology, allowing it to feed standard 400 V class motors without an autotransformer. A built-in brake chopper dissipates regenerated energy during rapid deceleration, protecting the DC link from overvoltage. Heat produced by the power semiconductors is removed through forced air cooling, so cabinet airflow must be maintained to prevent heat buildup during continuous operation. Input harmonics are reduced by an integrated mains filter, which helps limit conducted interference on adjacent equipment.
Motor flux is regulated through U/f curve control, a scalar method that keeps the voltage-to-frequency ratio constant for predictable torque across the speed range. Application options are enabled by the combination C1 + F1 function package, which combines standard drive tasks with extended I/O processing for additional control and signal handling. This unit belongs to Design generation 1, indicating the product revision used for this controller platform. Its cabinet-mounted format suits variable-speed industrial duties that require stable motor control and controlled deceleration.
Frequently Asked Questions about RD51.1-4B-004-L-CF-FW:
Q: Does the RD51.1-4B-004-L-CF-FW include a brake chopper?
A: This model includes a built-in brake chopper for efficient energy dissipation during braking cycles.
Q: What control type is featured on the RD51.1-4B-004-L-CF-FW drive controller?
A: The RD51.1-4B-004-L-CF-FW operates using U/f curve control for motor speed regulation.
Q: How is the RD51.1-4B-004-L-CF-FW drive controller cooled?
A: Forced air cooling is used in this model to maintain optimal operating temperatures.
Q: What is the supply voltage range for the RD51.1-4B-004-L-CF-FW?
A: This drive controller operates with a supply voltage range between 380 and 480 V.
Q: Does the RD51.1-4B-004-L-CF-FW include a mains filter?
A: An integrated mains filter is present in this drive controller to help manage electrical noise.
