RD51.1-5B-045-L-FV-FW Bosch Rexroth Indramat
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MPN: R911203179
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The Bosch Rexroth Indramat RD51.1-5B-045-L-FV-FW is a drive controller from the RD 500 Drive Controllers series with a rated power of 45 kW and operates on a 500 V, 3-phase AC supply. This first-generation controller features a built-in brake chopper, U/f curve control, and forced air cooling.
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Product Description:
The RD51.1-5B-045-L-FV-FW is a three-phase AC converter produced by Bosch Rexroth Indramat for the RD 500 Drive Controllers series. As a closed-loop power stage, the unit conditions mains energy and modulates motor voltage and frequency to control induction or synchronous machines used in material handling, packaging, and process lines. By integrating with higher-level automation, it provides adjustable speed and torque while protecting the connected motor and supply network. Its construction is intended for cabinet installation where precise motor regulation and coordinated multi-axis operation are required in industrial automation.
Rated output is 45 kW, giving the converter enough capacity for medium-power pumps, fans, or extruders without unnecessary oversizing. It is designed for a nominal DC link fed from a 500 V line and uses a 3 x AC line supply, so it accepts balanced industrial mains rather than a single-phase source. Speed regulation follows U/f curve control, which maintains a proportional voltage-to-frequency ratio to keep air-gap flux stable when the motor operates below base speed. Thermal energy is removed through Forced air cooling, and the housing includes a dedicated fan that channels airflow along heat-sink fins to help maintain semiconductor temperature during continuous regenerative cycles.
A Built-in brake chopper permits rapid deceleration by routing surplus DC-link energy to external resistors, which helps prevent overvoltage trips during vertical or high-inertia stops. The standby circuit accepts external 24 V standby power, so the control electronics can remain energized for communication and diagnostics even when the main supply is isolated. Process transients are monitored through current filter feedback (U6, V6, W6), allowing the drive to observe phase-current smoothing during operation. The hardware belongs to Design Generation 1, which matches the first-generation RD 500 option-card platform.
Frequently Asked Questions about RD51.1-5B-045-L-FV-FW:
Q: Does the RD51.1-5B-045-L-FV-FW drive controller have a brake chopper included?
A: The RD51.1-5B-045-L-FV-FW features a built-in brake chopper for handling energy dissipation during braking.
Q: What control type is used in the RD51.1-5B-045-L-FV-FW drive controller?
A: This model utilizes U/f curve control for motor regulation, supporting variable frequency operation.
Q: What cooling method does the RD51.1-5B-045-L-FV-FW utilize?
A: The RD51.1-5B-045-L-FV-FW is cooled via forced air, ensuring reliable thermal management during operation.
Q: What is the rated power capacity of the RD51.1-5B-045-L-FV-FW drive controller?
A: The rated power output of the RD51.1-5B-045-L-FV-FW is 45 kW, making it suitable for higher power applications.
Q: What type of supply and voltage range does the RD51.1-5B-045-L-FV-FW support?
A: This drive controller is designed for use with 3-phase AC supply systems with a voltage range of 500 V.
