RD51.1-4B-030-L-DF-FW Bosch Rexroth Indramat
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MPN: R911201465
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The Bosch Rexroth Indramat RD51.1-4B-030-L-DF-FW is a drive controller from the RD 500 Drive Controllers series with a rated power of 30 kW and supports a voltage range of 380 to 480 V. It features a built-in brake chopper, integrated mains filter, and utilizes U/f curve control with forced air cooling. This controller is designed as a converter for 3-phase AC supply and includes a NAMUR terminal strip with 24 V external stand-by power.
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Product Description:
The RD51.1-4B-030-L-DF-FW is a drive controller produced by Bosch Rexroth Indramat for the RD 500 Drive Controllers series. The unit acts as the power section of an automation axis, converting fixed-frequency mains power into a variable-frequency output that governs standard induction motors. Designed for three-phase installations, it supports speed regulation in conveyors, pumps, and ventilation systems where closed-loop vector feedback is not required. Its role is to maintain stable motor operation while matching process demands and reducing mechanical stress.
The controller follows U/f curve control, so motor voltage rises in proportion to frequency, a method suited for constant-torque loads without encoder feedback. It delivers a continuous output of 30 kW, giving sufficient headroom for mid-range machinery. The input section accepts 380 to 480 V three-phase utility power and, because the design is a 3 x AC converter, it can be wired directly to industrial distribution boards. Line voltage variations are accommodated by a ±10 % tolerance band, allowing the drive to operate without tripping in facilities that experience moderate sag or swell. These electrical limits describe the acceptable supply range and help set the rating of upstream protective devices.
It uses forced air cooling, and a rear fan moves cabinet air across the heat sink to remove IGBT losses. Dynamic overvoltage during deceleration is handled by a built-in brake chopper, which diverts excess DC energy to an external resistor. An integrated mains filter attenuates conducted emissions, so additional line filters are not required. The unit is Design Generation 1. Control wiring terminates on a NAMUR strip, and a 24 V external standby supply keeps the logic active when mains power is absent. Current filter feedback on U6, V6, and W6 supports diagnostics.
Frequently Asked Questions about RD51.1-4B-030-L-DF-FW:
Q: Does the RD51.1-4B-030-L-DF-FW have a brake chopper integrated?
A: This drive controller comes with a built-in brake chopper for controlled braking operations.
Q: What control type does the RD51.1-4B-030-L-DF-FW drive feature?
A: The RD51.1-4B-030-L-DF-FW utilizes U/f curve control, allowing for simple and effective speed regulation.
Q: How is the RD51.1-4B-030-L-DF-FW drive controller cooled?
A: A forced air cooling system is used in this model to maintain optimal operating temperatures.
Q: What voltage range is supported by the RD51.1-4B-030-L-DF-FW drive controller?
A: This drive controller supports input voltages ranging from 380 to 480 V AC.
Q: Is there a mains filter included in the RD51.1-4B-030-L-DF-FW drive controller?
A: The mains filter is integrated into the RD51.1-4B-030-L-DF-FW for electrical noise reduction.
