RD51.1-5B-090-D-DL-FW Bosch Rexroth Indramat
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MPN: R911200971
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The Bosch Rexroth Indramat RD51.1-5B-090-D-DL-FW is a drive controller from the RD 500 Drive Controllers series. It features a rated power of 90 kW, operates in a voltage range of 500 V, and has a built-in brake chopper. This controller uses U/f curve control, comes with a plug-through cooler for up to 110 kW, and includes a NAMUR terminal strip with 24 V stand-by power.
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Product Description:
The RD51.1-5B-090-D-DL-FW is a closed-loop power electronics module produced by Bosch Rexroth Indramat within the RD 500 Drive Controllers series. It is intended to control and monitor squirrel-cage induction motors used in conveyors, mixers, and pumping stations where adjustable speed improves process consistency and energy efficiency. By converting fixed line power into a variable-frequency output, the unit allows torque and speed commands from higher-level PLCs to be applied directly at the motor shaft in automated production lines. Closed-loop operation also helps the drive respond more steadily when load demand changes during normal machine cycles.
Thermal and dynamic limits are supported by a built-in brake chopper that diverts excess DC-link energy during rapid deceleration. The speed regulator uses U/f curve control, which maintains the volts-per-hertz ratio so motor flux remains stable across the operating range. Heat from the switching devices is removed through a plug-through cooler intended for installations up to 110 kW, which allows cabinet mounting without extra ducting. Continuous output is available up to 90 kW. The power section is intended for a DC bus derived from line voltages in the 500 V class, matching common industrial supply networks.
The input stage is a three-phase AC converter stage that rectifies three-phase line power before pulse-width modulation drives the motor. Field wiring terminates on a NAMUR terminal strip, and an external 24 V source keeps the control electronics active when the main power path is shut down. Diagnostic functions include cable damping feedback, which reports the effect of long motor leads on waveform quality. The unit is built in design generation 1, and that signal helps the drive react more consistently to cable-related changes in waveform conditions.
Frequently Asked Questions about RD51.1-5B-090-D-DL-FW:
Q: What design generation is the RD51.1-5B-090-D-DL-FW drive controller?
A: The RD51.1-5B-090-D-DL-FW is a Design Generation 1 model.
Q: Does the RD51.1-5B-090-D-DL-FW include a brake chopper?
A: This drive controller features a built-in brake chopper for energy dissipation during braking.
Q: What is the rated power capacity of the RD51.1-5B-090-D-DL-FW controller?
A: The RD51.1-5B-090-D-DL-FW supports up to 90 kW of rated power output.
Q: What type of cooling system does the RD51.1-5B-090-D-DL-FW use?
A: This model is cooled by a plug-through cooler for systems up to 110 kW.
Q: What is the supply voltage and type for the RD51.1-5B-090-D-DL-FW drive controller?
A: The RD51.1-5B-090-D-DL-FW operates with a 3-phase AC supply at 500 V.
