RD52.1-7N-200-R-V1-FW Bosch Rexroth Indramat
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MPN: R911200846
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The Bosch Rexroth Indramat RD52.1-7N-200-R-V1-FW is a drive controller from the RD 500 Drive Controllers series with a rated power of 200 kW. It features field oriented vector control and operates with inverter DC supply in the voltage range of 530 to 670 V. The unit uses liquid cooling with an internal pump and does not have a built-in brake chopper.
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Product Description:
The RD52.1-7N-200-R-V1-FW is manufactured by Bosch Rexroth Indramat and belongs to the RD 500 Drive Controllers series. As a mid-range AC inverter, it interfaces between a plant’s DC bus and induction or synchronous motors to regulate torque, speed, and direction under closed-loop feedback during variable-speed operation. The controller is used in conveyor lines, test stands, and high-power pumps where coordinated motion, controlled acceleration, and energy recovery are required.
This model operates on a DC link that can fluctuate between 530 to 670 V, allowing it to accept rectified mains in multi-drive installations. Its output section delivers up to 200 kW, supporting large-frame motors without external step-up gearboxes. Heat generated at this power level is removed by liquid cooling with an internal pump, and the integrated circuit keeps coolant flow stable so the heat sink remains within its intended operating range during continuous load. Vector modulation is executed through field-oriented vector control, which decouples flux and torque components for fast current response and precise shaft positioning. The DC link is fed from an inverter DC supply, so energy can be shared among multiple axes or returned to the grid when the load regenerates. Because the unit is supplied without a built-in brake chopper, an external brake resistor is required if prolonged regenerative peaks are expected.
The unit is generation 1, indicating the first design release of this version. Control logic is shipped blank, and firmware must be ordered as a separate subposition so the required motion library or regional parameter set can be selected. For emergency logic retention and fieldbus wake-up, the controller accepts external 24 V stand-by power, keeping diagnostics and communication active when the main DC bus is de-energized.
Frequently Asked Questions about RD52.1-7N-200-R-V1-FW:
Q: What input voltage range does the RD52.1-7N-200-R-V1-FW drive controller support?
A: This controller operates with a voltage range of 530 to 670 V.
Q: What is the rated power of the RD52.1-7N-200-R-V1-FW controller?
A: The RD52.1-7N-200-R-V1-FW is rated for a power output of 200 kW.
Q: What cooling method is used in the RD52.1-7N-200-R-V1-FW drive controller?
A: This model uses liquid cooling with an internal pump for efficient thermal management on systems rated at or above 132 kW.
Q: Does the RD52.1-7N-200-R-V1-FW offer stand-by power functionality?
A: The controller provides 24 V stand-by power, which must be supplied externally.
Q: Is there a built-in brake chopper in the RD52.1-7N-200-R-V1-FW drive controller?
A: It does not include a built-in brake chopper.
