RD52.1-4B-090-L-F1-FW Bosch Rexroth Indramat
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MPN: R911200439
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The Bosch Rexroth Indramat RD52.1-4B-090-L-F1-FW is part of the RD 500 Drive Controllers series and features field oriented vector control. This drive controller has a rated power of 90 kW, operates on a voltage range of 380 to 480 V, and uses forced air cooling. It includes a built-in brake chopper and integrated mains filter, and is designed for converter 3 x AC supply.
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Product Description:
The RD52.1-4B-090-L-F1-FW drive controller is produced by Bosch Rexroth Indramat as part of the RD 500 Drive Controllers series. It functions as the central power stage between the three-phase line supply and a motor, converting fixed-frequency input energy into variable frequency and voltage for process automation. In factory lines, the controller coordinates motor speed with sensor feedback to support precise throughput and energy savings without mechanical gear changes. This operating method is useful in equipment that must respond smoothly to changing production rates and load conditions.
The controller operates as a 3 x AC converter and accepts line voltages from 380 to 480 V, a range suited to typical industrial three-phase networks. Input fluctuations are accommodated by a tolerance of ±10%, which reduces sensitivity to normal supply variation. Internally, field-oriented vector control manages the motor's magnetic field, allowing high dynamic accuracy under changing load conditions. At a rated shaft output of 90 kW, the device supplies enough power for medium-sized drives such as extruders or compressors. The unit is in design generation 1, so its mechanical dimensions and terminal layouts match the earliest RD 500 mounting accessories.
A forced-air cooling system channels cabinet air across the heat sink and must remain unobstructed to maintain rated current. During rapid deceleration, the built-in brake chopper diverts regenerative energy to an external resistor, which helps prevent DC-bus overvoltage without extra modules. Line harmonics are reduced by the integrated mains filter, while current filter feedback (U6, V6, W6) signals provide real-time current data to the control board. Those signals allow the controller to monitor output behavior during operation and respond to changing motor demand.
Frequently Asked Questions about RD52.1-4B-090-L-F1-FW:
Q: Does the RD52.1-4B-090-L-F1-FW include a brake chopper?
A: The RD52.1-4B-090-L-F1-FW features a built-in brake chopper for effective energy management during braking cycles.
Q: What type of control does the RD52.1-4B-090-L-F1-FW utilize?
A: This drive controller uses field oriented vector control to achieve precise motor control.
Q: What cooling method is used for the RD52.1-4B-090-L-F1-FW drive controller?
A: The RD52.1-4B-090-L-F1-FW employs forced air cooling to maintain operating temperatures.
Q: What is the rated power output of the RD52.1-4B-090-L-F1-FW?
A: This model is rated for 90 kW, making it suitable for high-power applications.
Q: What supply voltage range does the RD52.1-4B-090-L-F1-FW support?
A: A voltage supply between 380 to 480 V AC is required for this drive controller.
