RD51.2-4B-015-L-NN-FW Bosch Rexroth Indramat
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MPN: R911201228
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The Bosch Rexroth Indramat RD51.2-4B-015-L-NN-FW is a drive controller from the RD 500 Drive Controllers series featuring a rated power of 15.0 kW and U/f curve control. It operates with a voltage range of 380 to 480 V, includes a built-in brake chopper and an integrated mains filter, and uses forced air cooling.
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Product Description:
The Bosch Rexroth Indramat RD51.2-4B-015-L-NN-FW is a drive controller in the RD 500 Drive Controllers series. As a stand-alone component in multi-axis automation, it converts three-phase mains power into a regulated output that varies both voltage and frequency so an induction motor can follow commanded speed profiles. In production lines, conveyors, or pump stations, the unit provides programmable acceleration, deceleration, and steady-state operation while monitoring energy feedback and thermal load.
Electrically, the controller accepts a three-phase input within a 380 to 480 V window, which lets a plant operate on common industrial grids without step-up transformers. The supply section is a Converter 3 × AC, meaning the rectifier and DC link process three-phase alternating current directly. Its continuous shaft capability reaches 15.0 kW, so motors drawing roughly 30 A at nominal conditions can be driven from a single frame size. A tolerance of ±10 % on mains variation helps keep the output stable when line voltage fluctuates. Command generation follows U/f curve control, which maintains the ratio between stator voltage and frequency to preserve magnetic flux across the speed range.
A built-in brake chopper dissipates regenerated energy into an external resistor, preventing DC-link overvoltage during rapid motor braking. Internal channels guide air through the heat sink, and forced air cooling maintains semiconductor junction temperatures without external liquid circuits. To suppress conducted interference, the unit uses an integrated mains filter that attenuates differential and common-mode noise at the input terminals. The housing is design generation 2, which keeps mounting dimensions and parameter menus consistent with later RD 500 accessories. The functions slot is not equipped.
Frequently Asked Questions about RD51.2-4B-015-L-NN-FW:
Q: What is the rated power output of the RD51.2-4B-015-L-NN-FW drive controller?
A: The RD51.2-4B-015-L-NN-FW provides a rated power of 15.0 kW to support demanding industrial operations.
Q: What is the acceptable supply voltage range for the RD51.2-4B-015-L-NN-FW?
A: This model supports a supply voltage range between 380 and 480 V, with a tolerance of ±10%.
Q: Does the RD51.2-4B-015-L-NN-FW include a brake chopper?
A: The drive controller incorporates a built-in brake chopper for efficient braking management during operation.
Q: What cooling method is used for the RD51.2-4B-015-L-NN-FW?
A: It uses forced air cooling to maintain device temperature during extended use.
Q: What type of control does the RD51.2-4B-015-L-NN-FW drive utilize?
A: The control type for this drive is U/f curve control, offering straightforward motor regulation.
