RD51.1-4B-001-L-V1-FW Bosch Rexroth Indramat
Wake Industrial LLC is not an authorized distributor of this product.
MPN: R911200254
No Tariffs On US Orders- Straightforward Pricing: No Rush Fees, No Credit Card Fees
The Bosch Rexroth Indramat RD51.1-4B-001-L-V1-FW is a drive controller from the RD 500 Drive Controllers series. It features U/f curve control, forced air cooling, and operates within a voltage range of 380 to 480 V with a ±10% tolerance. The controller includes an integrated mains filter, built-in brake chopper, and supports external 24 V stand-by power.
To contact sales for pricing and lead time:
Payment Methods
Shipping Methods
Our Credentials
Product Description:
The RD51.1-4B-001-L-V1-FW is a drive controller manufactured by Bosch Rexroth Indramat and distributed under the RD 500 Drive Controllers series. It is used in industrial automation to regulate induction motor speed and torque so production machinery can match mechanical demand while maintaining electrical efficiency. Positioned between the line supply and the motor, the unit performs frequency conversion, operating monitoring, and protective functions required for continuous plant operation. This arrangement allows conveyors, pumps, fans, and other process equipment to run at the commanded speed instead of operating only at fixed line frequency.
The controller operates on line voltages from 380 to 480 V and tolerates supply fluctuations of ±10%, which helps it remain stable when facility power varies. Its input stage is a three-phase AC converter, and motor excitation is managed by U/f curve control so the stator voltage stays proportional to frequency across the speed range. By rectifying incoming power and reconstructing a variable-frequency output, the drive can adapt motor operation to changing process loads without relying on mechanical speed-changing devices. Rapid deceleration is handled by a built-in brake chopper that diverts regenerated energy to an external resistor and helps prevent DC-bus overvoltage. The unit is built in generation 1, matching the first release of this platform.
Thermal management uses forced air cooling, and a factory-installed fan moves cabinet air across the heat sink to keep semiconductor temperatures within their operating limits. Control logic remains active during main-power loss because an auxiliary input supplies 24 V standby power, which helps preserve parameter memory and communication until line voltage returns. This separate standby supply also helps the control section remain responsive during brief interruptions instead of resetting immediately after every disturbance. For electromagnetic compatibility, the unit includes an integrated mains filter, so additional external filtering is often unnecessary and cabinet wiring can remain compact.
Frequently Asked Questions about RD51.1-4B-001-L-V1-FW:
Q: Does the RD51.1-4B-001-L-V1-FW include a brake chopper?
A: This model integrates a built-in brake chopper for energy dissipation during braking cycles.
Q: What type of control method is used by the RD51.1-4B-001-L-V1-FW drive controller?
A: The RD51.1-4B-001-L-V1-FW uses U/f curve control to regulate the application’s speed and torque.
Q: How is the RD51.1-4B-001-L-V1-FW cooled during operation?
A: This drive controller features forced air cooling to maintain optimal operating temperatures.
Q: Is a mains filter included with the RD51.1-4B-001-L-V1-FW drive controller?
A: An integrated mains filter is present for reducing electrical noise and ensuring clean input power.
Q: What supply voltage and type are required for the RD51.1-4B-001-L-V1-FW?
A: The supported supply voltage range for this unit is 380 to 480 V AC, and it accepts a converter 3-phase AC input.
