RD52.1-4B-001-L-V1-P1-NN-FW Bosch Rexroth Indramat
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MPN: R911288922
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The Bosch Rexroth Indramat RD52.1-4B-001-L-V1-P1-NN-FW is a drive controller from the RD 500 Drive Controllers series. It features field oriented vector control, a built-in brake chopper, and forced air cooling. The controller operates on a 380 to 480 V supply with an integrated mains filter and external 24 V stand-by power.
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Product Description:
The RD52.1-4B-001-L-V1-P1-NN-FW drive controller is produced by Bosch Rexroth Indramat within the RD 500 Drive Controllers series. It is a closed-loop power converter that modulates three-phase induction or synchronous motors used in conveying, packaging, and other factory automation tasks. By transforming fixed mains voltage into a variable-frequency, variable-amplitude output, the unit governs speed and torque so machinery can match production-line demands while maintaining energy efficiency and stable process performance. The closed-loop design also helps the drive respond smoothly to changing loads during normal operation. That behavior is useful on lines where acceleration, deceleration, and varying material loads could otherwise cause speed drift or uneven output.
Motor control is based on field-oriented vector control, a modulation method that calculates stator currents in real time to align with rotor flux and keep torque linear across the speed range. This approach helps the drive maintain stable motor behavior at both low and high speeds during process changes. The power section accepts an input range of 380 to 480 V, and an internal monitor allows operation while supply variation remains within the specified ±10% tolerance. To absorb regenerated energy during rapid stops, a built-in brake chopper directs surplus DC-bus voltage to an external resistor, which helps prevent overvoltage trips. Thermal management uses forced air cooling, so cabinet airflow must remain unobstructed to keep semiconductor temperatures within rated limits.
During idle periods, the control electronics can be powered by 24 V standby power, which permits parameter access and fieldbus communication when the main power stages are de-energized. This arrangement allows communication functions to remain active while the motor output stage stays inactive. A mains-side harmonic and interference reduction stage is provided by an integrated filter, removing the need for an external line reactor in most installations. The input structure is classified as a 3 x AC converter, meaning the rectifier and inverter sections are combined for direct connection to three-phase grids. The unit is part of design generation 1, which places it in the initial RD 500 hardware platform.
Frequently Asked Questions about RD52.1-4B-001-L-V1-P1-NN-FW:
Q: Does the RD52.1-4B-001-L-V1-P1-NN-FW have a built-in brake chopper?
A: The RD52.1-4B-001-L-V1-P1-NN-FW includes a built-in brake chopper for effective braking energy management.
Q: What control type does the RD52.1-4B-001-L-V1-P1-NN-FW use?
A: This drive controller uses field oriented vector control, allowing precise regulation of motor torque and speed.
Q: How is the RD52.1-4B-001-L-V1-P1-NN-FW cooled?
A: The RD52.1-4B-001-L-V1-P1-NN-FW features forced air cooling for thermal management.
Q: Does the RD52.1-4B-001-L-V1-P1-NN-FW include a mains filter?
A: An integrated mains filter is incorporated into this model to reduce electrical noise.
Q: What supply voltage range does the RD52.1-4B-001-L-V1-P1-NN-FW support?
A: The voltage range supported is 380 to 480 V AC with a ±10% tolerance.
