RD51.1-4N-011-L-DF-FW Bosch Rexroth Indramat
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MPN: R911200675
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The Bosch Rexroth Indramat RD51.1-4N-011-L-DF-FW is a drive controller from the RD 500 Drive Controllers series. It supports a voltage range of 380 to 480 V with a ±10% tolerance and uses U/f curve control. This model is equipped with forced air cooling, an integrated mains filter, and operates without a built-in brake chopper.
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Product Description:
The RD51.1-4N-011-L-DF-FW is a drive controller produced by Bosch Rexroth Indramat within the RD 500 Drive Controllers series. As a stand-alone converter, it regulates induction motor speed in process lines, conveyors, and similar automated stations by modulating the applied voltage and frequency. Used with matching feedback modules, it maintains consistent torque and acceleration profiles so connected machinery follows programmed motion curves and cycle times.
This unit employs U/f curve control, so its microprocessor keeps the stator flux nearly constant while ramping frequency, a method suited for general-purpose torque demands. The permissible input is 380 to 480 V three-phase, and operation remains stable within a line fluctuation of ±10 %. The power section is a converter for a 3 × AC supply that rectifies and inverts incoming mains to a variable output for the motor terminals. Thermal management is handled by forced air cooling; an internal fan moves air across the heat sink so the IGBTs stay within their junction limits during high current cycles. Firmware is ordered separately and loaded through the front programming port to match application-specific parameter sets.
The unit is delivered without a built-in brake chopper, so external dynamic braking hardware is required when rapid deceleration or overhauling loads generate excess DC-link energy. An integrated mains filter attenuates conducted emissions, allowing installation on industrial supply networks without added RFI components. Control wiring lands on a NAMUR terminal strip; this interface also accepts an external 24 V standby feed that keeps logic alive during mains isolation. Current feedback from points U6, V6, and W6 can be routed to diagnostics for harmonic analysis. The unit is design generation 1 and uses the mounting pattern and connector locations associated with that generation.
Frequently Asked Questions about RD51.1-4N-011-L-DF-FW:
Q: What type of control does the RD51.1-4N-011-L-DF-FW drive controller use?
A: The RD51.1-4N-011-L-DF-FW uses U/f curve control for its operation.
Q: What is the operating voltage range of the RD51.1-4N-011-L-DF-FW drive controller?
A: This model operates on a voltage range of 380 to 480 V, suitable for common industrial power supplies.
Q: What type of cooling does the RD51.1-4N-011-L-DF-FW drive controller use?
A: Forced air cooling is used, ensuring efficient temperature management during operation.
Q: Does the RD51.1-4N-011-L-DF-FW include a built-in mains filter?
A: The RD51.1-4N-011-L-DF-FW features an integrated mains filter for electrical noise reduction.
Q: Is a brake chopper included in the RD51.1-4N-011-L-DF-FW drive controller?
A: This drive controller does not come with a built-in brake chopper as standard.
