RD51.1-4B-005-L-VY-FW Bosch Rexroth Indramat
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MPN: R911201007
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The Bosch Rexroth Indramat RD51.1-4B-005-L-VY-FW is a drive controller from the RD 500 Drive Controllers series. It provides U/f curve control with a rated power of 5.5 kW and operates on a voltage range of 380 to 480 V. This drive controller features a built-in brake chopper, integrated mains filter, forced air cooling, and is designed for use with converter 3 phase AC supply.
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Product Description:
The RD51.1-4B-005-L-VY-FW drive controller is manufactured by Bosch Rexroth Indramat within the RD 500 Drive Controllers series. It regulates the voltage and frequency supplied to standard AC motors so that production lines can match motor speed to process demand in conveyors, fans, and pumping systems. Designed as generation 1 hardware, this controller shares mounting dimensions and terminal locations with other RD modules, which helps keep panel arrangements consistent in multi-axis installations. This makes it suitable for equipment that benefits from controlled acceleration, deceleration, and speed trimming during routine operation.
A built-in brake resistor switch is provided through the built-in brake chopper, allowing excess regenerative energy to be dissipated internally during rapid deceleration. Motor flux is established by U/f curve control, a scalar method that links output voltage to frequency for stable torque delivery across the usable speed range. Heat produced by the power semiconductors is expelled with forced air cooling, permitting continuous operation at the unit’s nominal rating without external heat sinks. Line-side interference is attenuated by the integrated mains filter, reducing conducted emissions back into the plant supply. That helps limit disturbance to nearby equipment on the same supply branch. The inverter section supports a mechanical load of 5.5 kW, which fits mid-sized duties such as pumps, conveyors, and other constant-torque machinery. Input conductors can range between phase-to-phase potentials of 380 to 480 V, covering common 400 V and 460 V industrial networks.
The supply interface uses three-phase AC input, so the unit draws mains power directly without an autotransformer. Its control logic compensates for line fluctuations of up to ±10%, helping the motor maintain steady operation when the incoming supply varies within the allowed range. Functional slot coding is listed as Combination Y1 + V1, which indicates the installed control and braking option set. This arrangement supports integration into drive cabinets where braking and application I/O must be handled within the same controller housing. Direct three-phase input also simplifies installation by eliminating the need for a separate line-conversion stage in standard industrial power systems.
Frequently Asked Questions about RD51.1-4B-005-L-VY-FW:
Q: What is the rated power of the RD51.1-4B-005-L-VY-FW drive controller?
A: The RD51.1-4B-005-L-VY-FW has a rated power of 5.5 kW.
Q: Does the RD51.1-4B-005-L-VY-FW feature an integrated brake chopper?
A: This model includes a built-in brake chopper for energy dissipation during braking cycles.
Q: What control method does the RD51.1-4B-005-L-VY-FW use?
A: The RD51.1-4B-005-L-VY-FW uses U/f curve control for regulating motor speed and torque.
Q: What cooling method is used in the RD51.1-4B-005-L-VY-FW drive?
A: Forced air cooling is implemented in this controller for thermal management.
Q: What is the allowable input voltage range for the RD51.1-4B-005-L-VY-FW drive?
A: The input voltage range for this model is between 380 and 480 V AC.
