RD51.1-7N-003-L-NN-FW Bosch Rexroth Indramat
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MPN: R911200219
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The Bosch Rexroth Indramat RD51.1-7N-003-L-NN-FW is a drive controller from the RD 500 Drive Controllers series. It features a rated power of 3.0 kW and supports a supply voltage range from 530 to 670 Volts. This model uses forced air cooling and employs U/f curve control, and does not include a built-in brake chopper.
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Product Description:
The RD51.1-7N-003-L-NN-FW is a three-phase drive controller manufactured by Bosch Rexroth Indramat for the RD 500 Drive Controllers series. It operates between a plant's DC bus and an induction motor, producing adjustable output frequency and voltage so machine speed can follow process demand. This arrangement suits conveyors, pumps, and fan systems where electronic speed control replaces throttling or fixed-speed operation. Because the output is electronically adjusted, the drive can support smooth acceleration and deceleration in process lines that need stable material flow.
Within the power stage, the controller accepts an intermediate circuit of 530 to 670 V and uses the Inverter DC supply type, meaning it is fed from a rectified common DC bus instead of line-side AC. At nominal load, it delivers 3.0 kW to the motor for continuous operation. Speed regulation is based on U/f curve control, which keeps voltage proportional to frequency so motor flux remains stable across the normal operating range. This method is well suited to applications that need dependable speed control without more complex feedback functions. Heat is removed by forced air cooling, with an internal fan moving cabinet air across the heat sink. This cooling method helps the power semiconductors remain within their permitted temperature range during sustained duty.
This model belongs to design generation 1, so its layout matches early control racks and cabling arrangements. It is supplied without a built-in brake chopper, so applications that return energy during deceleration require an external resistor unit. When braking energy is low, the absence of the chopper keeps the power section focused on standard inverter operation. The drive has no optional technology functions, keeping the control structure focused on standard speed regulation.
Frequently Asked Questions about RD51.1-7N-003-L-NN-FW:
Q: What is the rated power output of the RD51.1-7N-003-L-NN-FW drive controller?
A: The RD51.1-7N-003-L-NN-FW operates with a rated power of 3.0 kW, making it suitable for medium-power drive applications.
Q: What control type is used in the RD51.1-7N-003-L-NN-FW drive controller?
A: This controller uses U/f curve control for managing motor operation.
Q: How is the RD51.1-7N-003-L-NN-FW cooled?
A: The unit utilizes forced air cooling to regulate its temperature during operation.
Q: What is the supply type and voltage range for the RD51.1-7N-003-L-NN-FW?
A: It supports an inverter DC supply and operates within a voltage range of 530 to 670 V.
Q: Does the RD51.1-7N-003-L-NN-FW include a brake chopper?
A: This model is manufactured without a built-in brake chopper.
