RD51.1-5N-045-L-CL-FW Bosch Rexroth Indramat
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MPN: R911200701
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The Bosch Rexroth Indramat RD51.1-5N-045-L-CL-FW is a drive controller from the RD 500 Drive Controllers series. It features a rated power output of 45 kW, operates on a 500 V three-phase AC supply, and uses forced air cooling. This design is from generation 1 and offers U/f curve control without a built-in brake chopper.
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Product Description:
The RD51.1-5N-045-L-CL-FW belongs to the RD 500 Drive Controllers series manufactured by Bosch Rexroth Indramat. In automated plants, this controller modulates supply power so that induction motors receive precise voltage-to-frequency pairs, allowing conveyor sections, mixers, or pumps to match process demands without mechanical gear changes. The unit sits in the cabinet lineup as a standalone frequency converter that interfaces with upstream mains components and downstream motor terminals. Its role is to vary motor speed electrically, which helps process equipment respond to changing load conditions while keeping the power section contained in one cabinet module.
Speed shaping is achieved through U/f curve control; the controller adjusts output voltage in fixed proportion to frequency so the air-gap flux in the connected motor stays constant from zero to base speed. Thermal management relies on forced air cooling, meaning internal heat sinks are cleared by a fan that pushes ambient air through defined channels. The controller is built for the 500 V class and receives power as a three-phase AC converter, so a three-phase supply feeds its rectifier and intermediate DC link. With a rated output of 45 kW, the unit can drive medium-sized production machinery while leaving current headroom for overloads during acceleration or tensioning cycles. This operating method suits applications that need smooth ramping and stable torque across a broad working range.
The drive is supplied without a built-in brake chopper, so applications that require rapid stopping must use an external resistor and chopper card to dissipate regenerated energy during deceleration. The unit uses the C1 + L1 combination function group, which integrates line filtering and contactor supervision. The product is Design generation 1, indicating first-release component dimensions and connector layouts compatible with early RD cabinet kits. This layout matches mounting patterns and connection points used in early RD cabinet assemblies.
Frequently Asked Questions about RD51.1-5N-045-L-CL-FW:
Q: What is the rated power output of the RD51.1-5N-045-L-CL-FW drive controller?
A: The RD51.1-5N-045-L-CL-FW drive controller is rated at 45 kW output power.
Q: What type of control method does the RD51.1-5N-045-L-CL-FW utilize?
A: This drive controller uses U/f curve control for efficient motor regulation.
Q: How is the RD51.1-5N-045-L-CL-FW drive controller cooled?
A: Cooling for this model is managed with a forced air system.
Q: Is a brake chopper integrated into the RD51.1-5N-045-L-CL-FW?
A: This model does not include a built-in brake chopper feature.
Q: What power supply and voltage does the RD51.1-5N-045-L-CL-FW require?
A: The RD51.1-5N-045-L-CL-FW operates on a 3-phase AC converter supply with a voltage range of 500 V.
