RD51.1-4B-001-L-NN-FW Bosch Rexroth Indramat
Wake Industrial LLC is not an authorized distributor of this product.
MPN: R911200194
No Tariffs On US Orders- Straightforward Pricing: No Rush Fees, No Credit Card Fees
Current response time:
3 Minutes
1 Seconds
The Bosch Rexroth Indramat RD51.1-4B-001-L-NN-FW is a drive controller from the RD 500 Drive Controllers series. It operates on a voltage range of 380 to 480 V with a ±10% tolerance and features U/f curve control. The controller includes a built-in brake chopper, integrated mains filter, and uses forced air cooling.
To contact sales for pricing and lead time:
Payment Methods
Shipping Methods
Our Credentials
Product Description:
The RD51.1-4B-001-L-NN-FW is produced by Bosch Rexroth Indramat as part of the RD 500 Drive Controllers series. Designed for cabinet installation in factory automation, it converts fixed network power into a variable-frequency output for standard three-phase induction motors. The controller monitors line conditions, references internal parameters, and sends gate commands to its IGBT bridge so motor speed, direction, and torque follow programmed profiles from a PLC or local keypad. This embedded regulation helps process equipment such as conveyors, mixers, and pumping stations maintain consistent operation while reducing mechanical stress and energy use.
The controller accepts line power through a three-phase AC converter front end and operates within a nominal range of 380 to 480 V. It tolerates fluctuations of ±10 %, which helps maintain stable output without external voltage regulation. Motor excitation is managed by U/f curve control, which keeps the volts-per-hertz ratio constant so motor flux remains stable across the speed range. Thermal limits are handled by forced-air cooling, and airflow passes over the heat sink and semiconductor modules during operation. This cooling method supports continuous use in enclosed control cabinets where heat must be removed from the power section.
The power stage includes a built-in brake chopper, allowing regenerated energy to be dissipated through a matched resistor during rapid deceleration or load overruns. Upstream distortion is reduced by an integrated mains filter, which helps limit conducted harmonics before they reach the facility supply bus. The hardware is part of Design Generation 1, so compatible option cards and fan trays must match that revision. The unit also has an unoccupied auxiliary function bay, leaving space for a future I/O or communication add-on.
Frequently Asked Questions about RD51.1-4B-001-L-NN-FW:
Q: Does the RD51.1-4B-001-L-NN-FW include a brake chopper?
A: The RD51.1-4B-001-L-NN-FW drive controller features a built-in brake chopper for energy dissipation during braking cycles.
Q: What control method does the RD51.1-4B-001-L-NN-FW drive controller utilize?
A: This model uses U/f curve control for regulating motor performance.
Q: What cooling method is used in the RD51.1-4B-001-L-NN-FW drive controller?
A: Forced air cooling is employed in this unit to maintain optimal operating temperature.
Q: Is there a mains filter integrated in the RD51.1-4B-001-L-NN-FW controller?
A: The RD51.1-4B-001-L-NN-FW has an integrated mains filter to reduce electrical noise and disturbances.
Q: What is the supply voltage range for the RD51.1-4B-001-L-NN-FW drive controller?
A: This controller operates on a supply voltage range from 380 to 480 V with a tolerance of ±10%.
