RD51.1-4B-022-L-F1-FW Bosch Rexroth Indramat
Wake Industrial LLC is not an authorized distributor of this product.
MPN: R911203602
No Tariffs On US Orders- Straightforward Pricing: No Rush Fees, No Credit Card Fees
The Bosch Rexroth Indramat RD51.1-4B-022-L-F1-FW is a drive controller from the RD 500 Drive Controllers series. It has a rated power of 22 kW and supports a voltage range from 380 to 480 V with a ±10% tolerance. This controller features U/f curve control, forced air cooling, an integrated mains filter, and a built-in brake chopper.
To contact sales for pricing and lead time:
Payment Methods
Shipping Methods
Our Credentials
Product Description:
The RD51.1-4B-022-L-F1-FW is a drive controller produced by Bosch Rexroth Indramat within the RD 500 Drive Controllers series. Designed for cabinet installation, the unit serves as the central power stage for induction motors used in automated material handling, machining cells, and process equipment. By modulating the output frequency and voltage delivered to a motor, it provides speed regulation, startup control, and motor output that is matched to process demand during industrial operation. This arrangement supports steady acceleration, controlled deceleration, and repeatable speed behavior in systems that do not rely on direct motor switching.
With a nominal power rating of 22 kW, the controller is intended for medium-power machinery where motor shaft output must not exceed that value. It connects to a three-phase grid through a three-phase AC converter input stage and operates across a line window of 380 to 480 V, allowing deployment on most 400 V plants. The embedded control algorithm follows a U/f curve control profile, so the voltage applied to the motor remains proportional to frequency and helps stabilize torque in constant-flux applications without encoder feedback. Thermal management relies on forced air cooling, so adequate cabinet airflow is required to remove semiconductor losses during continuous modulation.
During rapid deceleration or emergency stops, the controller’s built-in brake chopper diverts regenerated energy to an external resistor, preventing overvoltage on the DC bus. Line-side interference is reduced by an integrated mains filter, helping the installation meet conducted emission limits without extra hardware. A line fluctuation band of ±10 % keeps the drive functional when supply magnitude drifts within that margin, which is useful in facilities with variable transformer taps. The unit is design generation 1 and supports current feedback monitoring on terminals U6, V6, and W6 for diagnostic or protective routines.
Frequently Asked Questions about RD51.1-4B-022-L-F1-FW:
Q: Does the RD51.1-4B-022-L-F1-FW include a brake chopper?
A: The RD51.1-4B-022-L-F1-FW drive controller features a built-in brake chopper.
Q: What control method does the RD51.1-4B-022-L-F1-FW use?
A: This model uses U/f curve control for its operation.
Q: How is the RD51.1-4B-022-L-F1-FW drive controller cooled?
A: The RD51.1-4B-022-L-F1-FW utilizes forced air cooling to maintain optimal operating temperatures.
Q: What is the rated output power of the RD51.1-4B-022-L-F1-FW?
A: The rated power of this drive controller is 22 kW.
Q: What type and range of supply voltage does the RD51.1-4B-022-L-F1-FW require?
A: This model operates on a three-phase AC supply with a voltage range of 380 to 480 V.
