RD52.1-4B-004-L-NN-NN-NN-FW Bosch Rexroth Indramat
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MPN: R911289492
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The Bosch Rexroth Indramat RD52.1-4B-004-L-NN-NN-NN-FW is a drive controller in the RD 500 Drive Controllers series. It features field oriented vector control, a built-in brake chopper, and operates on a voltage range of 380 to 480 V. The unit is equipped with forced air cooling and an integrated mains filter.
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Product Description:
The RD52.1-4B-004-L-NN-NN-NN-FW is a drive controller produced by Bosch Rexroth Indramat within the RD 500 Drive Controllers series. It processes three-phase input power, modulates motor current, and supports closed-loop speed and torque regulation in automated machinery. In production lines, packaging equipment, and material-handling axes, the unit coordinates induction or synchronous motors so that commanded motion profiles are executed accurately. By matching motor output to control commands in real time, it helps maintain stable acceleration, deceleration, and steady-state operation when load conditions shift during normal machine cycles.
Incoming mains between 380 to 480 V are converted and pulsed by the controller’s IGBT stack. Its regulation algorithm is based on field-oriented vector control, so stator currents are resolved into direct and quadrature components for precise torque generation even when motor parameters change. This control approach helps the motor hold speed more evenly during load changes and supports smoother low-speed operation. A built-in brake chopper connects the DC link to an external resistor, allowing regenerated energy to be dissipated during rapid deceleration. Thermal management relies on forced air cooling, and the housing channels airflow across heat sinks to keep semiconductor junction temperatures within allowable limits. Line-side emissions are attenuated by an integrated mains filter, which reduces conducted noise and simplifies cabinet wiring.
As a converter 3 × AC device, the controller is intended to be fed directly from three-phase utility supplies without an autotransformer. This arrangement suits common plant power distribution and keeps installation straightforward where standard industrial feeders are available. The product code includes design generation 1, which identifies the first release of this version. Component ratings are dimensioned for input fluctuations of ±10 %, allowing stable modulation when plant voltage drifts from nominal. The option slots are left not equipped, leaving room for future communication or safety plug-ins while keeping the present configuration focused on standard motion tasks.
Frequently Asked Questions about RD52.1-4B-004-L-NN-NN-NN-FW:
Q: Does the RD52.1-4B-004-L-NN-NN-NN-FW include a brake chopper?
A: The RD52.1-4B-004-L-NN-NN-NN-FW features a built-in brake chopper for controlled braking management.
Q: What type of control does the RD52.1-4B-004-L-NN-NN-NN-FW utilize?
A: This model operates using field oriented vector control for precision drive management.
Q: How is the RD52.1-4B-004-L-NN-NN-NN-FW cooled?
A: Forced air cooling is used for maintaining optimal operating temperature in this drive controller.
Q: Does the RD52.1-4B-004-L-NN-NN-NN-FW have a mains filter?
A: The RD52.1-4B-004-L-NN-NN-NN-FW includes an integrated mains filter for electrical noise reduction.
Q: What are the supply type and voltage range specifications for the RD52.1-4B-004-L-NN-NN-NN-FW?
A: This unit is supplied as a converter for three-phase AC systems with a voltage range of 380 to 480 V and a tolerance of ±10%.
