RD52.1-5B-037-L-NN-FW Bosch Rexroth Indramat
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MPN: R911201439
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The Bosch Rexroth Indramat RD52.1-5B-037-L-NN-FW is a drive controller that is part of the RD 500 Drive Controllers series. It has a rated power of 37 kW and uses field oriented vector control with a built-in brake chopper. The controller operates on 3-phase AC supply at 500 V and features forced air cooling.
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Product Description:
The RD52.1-5B-037-L-NN-FW is a drive controller produced by Bosch Rexroth Indramat for the RD 500 Drive Controllers series. It sits between the plant power bus and the motor, rectifying and modulating line voltage so that squirrel-cage or permanent-magnet motors receive accurately controlled current vectors. By shaping motor current in real time, it helps the drive maintain stable acceleration and deceleration under changing load conditions. In packaging, material-handling, or machining lines, the controller supplies closed-loop velocity and torque commands that help synchronize axes, reduce mechanical shock, and support repeatable motion.
The unit is rated for 37 kW of continuous motor power, which helps determine the surrounding electrical capacity. Regulation of magnetic flux is handled by field-oriented vector control, an algorithm that separates stator current into torque-producing and magnetizing components for responsive speed control. Because those current components are managed independently, motor response can remain stable through low-speed operation and during speed changes. The power stage uses a three-phase AC converter supply and is dimensioned for 500 V networks, which sets the insulation and operating range for the input side. During regenerative braking, the built-in brake chopper diverts surplus DC-bus energy to an external resistor to help prevent overvoltage trips when loads decelerate.
Thermal stability is maintained by forced air cooling, with axial fans moving air through the heat sink so semiconductor junction temperatures stay within allowable limits during high duty cycles. Continuous airflow also reduces heat buildup around the power semiconductors and DC-bus components during demanding operation. The drive is design generation 1, so its terminal layout and option card footprints match the first RD platform release. Application software is not embedded at delivery, and the required control code must be ordered as a separate subposition before motion sequences and fieldbus protocols can be activated. Supplementary technology functions are not included, so the controller remains limited to its base feature set.
Frequently Asked Questions about RD52.1-5B-037-L-NN-FW:
Q: Does the RD52.1-5B-037-L-NN-FW drive controller include a brake chopper?
A: The RD52.1-5B-037-L-NN-FW is equipped with a built-in brake chopper for controlling braking energy.
Q: What type of control does the RD52.1-5B-037-L-NN-FW provide?
A: This drive controller operates using field oriented vector control for precise motor management.
Q: How is the RD52.1-5B-037-L-NN-FW kept cool during operation?
A: The RD52.1-5B-037-L-NN-FW uses forced air cooling to help maintain its operating temperature.
Q: What is the rated power output of the RD52.1-5B-037-L-NN-FW?
A: The RD52.1-5B-037-L-NN-FW drive controller has a rated power of 37 kW.
Q: What type of power supply and voltage does the RD52.1-5B-037-L-NN-FW require?
A: This model is designed for a 3 x AC converter power supply at a voltage range of 500 V.
