RD52.1-4B-075-L-V1-FW Bosch Rexroth Indramat
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MPN: R911200428
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The Bosch Rexroth Indramat RD52.1-4B-075-L-V1-FW is a drive controller from the RD 500 Drive Controllers series with a rated power of 75 kW and a voltage range of 380 to 480 V. It features field oriented vector control, forced air cooling, and a built-in brake chopper. The unit also includes an integrated mains filter and supports converter 3 x AC supply type.
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Product Description:
The RD52.1-4B-075-L-V1-FW is a Bosch Rexroth Indramat drive controller from the RD 500 Drive Controllers series. Designed for cabinet installation, the unit converts fixed utility power into adjustable voltage and frequency for controlled motor operation in automated machinery, conveyors, and processing lines. By using vector-based algorithms and integrated power electronics, the controller supports rapid speed changes, reliable torque production, and coordinated motion sequences in industrial automation. This generation-1 design also supports external low-voltage backup so parameter memory and diagnostic access remain available when the main supply is off.
It delivers a rated output of 75 kW, which indicates the continuous power available for the connected motor. The device accepts a supply between 380 to 480 V and maintains normal operation when voltage remains within ±10 %, helping it tolerate moderate mains variation. Motor regulation is achieved through field-oriented vector control, a method that independently modulates stator flux and torque-producing current for stable low-speed performance and responsive control under changing loads. An integrated mains filter reduces line-borne interference to support electromagnetic compatibility within the plant.
For rapid deceleration, the drive incorporates a built-in brake chopper that directs regenerative energy to an external resistor instead of the DC link. Thermal management relies on forced air cooling, and a dedicated fan moves ambient air across heat-sink fins to support full-load operation in enclosed cabinets. The power section uses a three-phase AC converter design, so it rectifies the mains, builds a DC bus, and inverts it back to variable AC for the motor. Control electronics can stay energized by the plant’s 24 V standby power line, preserving communication and diagnostic access when the main supply is isolated.
Frequently Asked Questions about RD52.1-4B-075-L-V1-FW:
Q: Does the RD52.1-4B-075-L-V1-FW include a brake chopper?
A: The RD52.1-4B-075-L-V1-FW drive controller features a built-in brake chopper for effective energy dissipation during braking cycles.
Q: What control method is used in the RD52.1-4B-075-L-V1-FW drive controller?
A: This model uses field oriented vector control as its control type, allowing precise regulation of motor torque and speed.
Q: How is the RD52.1-4B-075-L-V1-FW cooled during operation?
A: Forced air cooling is implemented in the RD52.1-4B-075-L-V1-FW to maintain optimal operating temperatures during extended use.
Q: What is the rated power output of the RD52.1-4B-075-L-V1-FW?
A: The RD52.1-4B-075-L-V1-FW operates at a rated power output of 75 kW for demanding industrial applications.
Q: What voltage range can the RD52.1-4B-075-L-V1-FW accept on its supply input?
A: The voltage input range for this drive controller is 380 to 480 V AC with a tolerance of ±10%.
