RD52.1-4B-007-L-NN-FW Bosch Rexroth Indramat
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MPN: R911200049
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The Bosch Rexroth Indramat RD52.1-4B-007-L-NN-FW is a drive controller from the RD 500 Drive Controllers series. It offers a rated power of 7.5 kW and operates within a voltage range of 380 to 480 V with a built-in brake chopper and integrated mains filter. The unit uses field oriented vector control and forced air cooling.
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Product Description:
The RD52.1-4B-007-L-NN-FW is a drive controller released by Bosch Rexroth Indramat within the RD 500 Drive Controllers series. Designed for cabinet installation, the device supervises the output of an attached inverter stage so that motor torque follows reference commands from a higher-level control system. In automated lines, it modulates AC motor speed and torque for repeatable positioning, energy-efficient acceleration, and reliable overload handling across conveyors, presses, and material-forming equipment. It is intended for industrial processes that require predictable motor response during both continuous running and repeated speed changes. This control role lets the drive respond quickly to changing process demands while keeping motion stable during normal production cycles.
The controller accepts an input window of 380–480 V, giving it the headroom required for international three-phase grids. A built-in brake chopper routes regenerated energy created during rapid deceleration to an external resistor instead of returning it to the mains. Vector regulation is handled by field-oriented vector control, which tracks rotor flux and delivers fast torque changes at low speed. Thermal management relies on forced air cooling; a dedicated fan pushes air along the heat sink to keep semiconductor junction temperatures within safe limits during extended duty. Line-side interference is reduced by the integrated mains filter, which helps the controller meet conducted-emission targets without extra external components. At the motor terminals, it can deliver up to 7.5 kW, matching medium-frame induction or synchronous motors used in pumps, extruders, and similar loads.
The supply section is a 3 x AC converter, and the hardware tolerates line variations of ±10 % without derating on typical industrial networks. The unit is classified as generation 1, which identifies the hardware platform used for this controller. Its tolerance for normal supply variation helps maintain consistent behavior during voltage swings and changing plant conditions. The controller can be used in mid-range drive systems that require stable speed and torque response across variable operating loads.
Frequently Asked Questions about RD52.1-4B-007-L-NN-FW:
Q: What is the rated power output of the RD52.1-4B-007-L-NN-FW drive controller?
A: The RD52.1-4B-007-L-NN-FW drive controller delivers a rated power output of 7.5 kW.
Q: What type of supply voltage does the RD52.1-4B-007-L-NN-FW use?
A: This drive controller operates on a three-phase AC supply.
Q: Does the RD52.1-4B-007-L-NN-FW include a brake chopper?
A: A built-in brake chopper is featured for handling braking energy internally.
Q: What type of cooling system does the RD52.1-4B-007-L-NN-FW use?
A: The RD52.1-4B-007-L-NN-FW uses forced air cooling to maintain optimal operating temperature.
Q: What is the supported input voltage range for the RD52.1-4B-007-L-NN-FW?
A: The voltage range supported by this model is 380 to 480 V with a ±10% tolerance.
