RD52.1-8N-055-L-NN-FW Bosch Rexroth Indramat
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MPN: R911200378
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The Bosch Rexroth Indramat RD52.1-8N-055-L-NN-FW is a drive controller from the RD 500 Drive Controllers series. It offers a rated power of 55 kW and uses field oriented vector control. The unit operates with an inverter DC supply type and features forced air cooling, without a built-in brake chopper.
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Product Description:
The RD52.1-8N-055-L-NN-FW is a drive controller produced by Bosch Rexroth Indramat for the RD 500 Drive Controllers series. The unit interfaces between a DC link and an AC motor, modulating voltage and frequency so production lines, conveyors, and process pumps receive the speed and torque commands required for automated duty cycles. Because it performs closed-loop motor regulation internally, the drive reduces the processing burden on higher-level PLC hardware and provides direct feedback for diagnostic functions.
It performs motor regulation through field-oriented vector control, a method that calculates stator currents in real time so torque remains stable even at low speeds. The power section is rated at 55 kW, making it suitable for medium-sized industrial loads such as extruders or centrifuges. Incoming power is taken from an inverter DC bus, which allows multiple drives to share a common rectifier and regenerative energy path. The drive’s input window centers on 700 V, matching typical high-power DC links derived from 480 V three-phase mains. Thermal management relies on forced-air cooling, and the integrated fans move heat away from the IGBT modules during continuous operation.
The unit is identified as design generation 1, so its electrical terminals and parameter structure follow the first release layout of the RD 500 family. It is supplied without a built-in brake chopper, so applications that require dynamic braking need an external resistor and chopper assembly to dissipate excess DC-link energy. Standard software is not included, and the software package is ordered separately so the selected application can match the machine task. Internal option slots are empty, leaving room for future encoder interfaces or fieldbus modules without disassembling the main power section.
Frequently Asked Questions about RD52.1-8N-055-L-NN-FW:
Q: What is the rated power output of the RD52.1-8N-055-L-NN-FW drive controller?
A: The RD52.1-8N-055-L-NN-FW drive controller is rated for a power output of 55 kW.
Q: What cooling method does the RD52.1-8N-055-L-NN-FW use?
A: This drive controller operates using forced air cooling, ensuring consistent thermal management during operation.
Q: What type of control is implemented in the RD52.1-8N-055-L-NN-FW drive controller?
A: The RD52.1-8N-055-L-NN-FW is designed with field oriented vector control for precise motor control.
Q: Does the RD52.1-8N-055-L-NN-FW include a built-in brake chopper?
A: This model does not have a built-in brake chopper, so an external solution may be needed if braking is required.
Q: What is the voltage range and supply type for the RD52.1-8N-055-L-NN-FW drive controller?
A: The voltage range for the RD52.1-8N-055-L-NN-FW is rated at 700 V and it uses inverter DC supply.
