RD51.1-5B-011-L-DF-FW Bosch Rexroth Indramat
Wake Industrial LLC is not an authorized distributor of this product.
MPN: R911203230
No Tariffs On US Orders- Straightforward Pricing: No Rush Fees, No Credit Card Fees
The Bosch Rexroth Indramat RD51.1-5B-011-L-DF-FW is a drive controller featuring a built-in brake chopper and U/f curve control. Part of the RD 500 Drive Controllers series, it is designed for converter 3-phase AC supply with a voltage range of 500 V and uses forced air cooling. This model includes a NAMUR terminal strip with 24 V external stand-by power and feedback of current filter on U6, V6, and W6 phases.
To contact sales for pricing and lead time:
Payment Methods
Shipping Methods
Our Credentials
Product Description:
The RD51.1-5B-011-L-DF-FW drive controller is produced by Bosch Rexroth Indramat as part of the RD 500 Drive Controllers series. It modulates converter output for three-phase induction motors in automated plants, maintaining the required speed or torque through coordinated voltage and frequency adjustment. By combining control electronics, power conversion, and protective functions in one enclosure, the unit supports material-handling systems, pumps, and fan applications while reducing the number of separate cabinet components. This makes it suitable for variable-speed duties where the motor must respond smoothly to changing process demand rather than run only at fixed line frequency.
At its input, the controller accepts a three-phase AC converter supply and is dimensioned for line voltages up to 500 V. Internally, it uses U/f curve control so motor flux remains stable as operating frequency changes across the speed range. Because the controller regulates output by adjusting both voltage and frequency, it can support basic speed control without requiring closed-loop motor feedback for standard induction-motor tasks. Deceleration energy is handled by a built-in brake chopper, which allows braking energy to be dissipated without a separate external module. Thermal stability is maintained by forced air cooling, with directed airflow moving across the heat sink to limit semiconductor temperature during repeated starts and stops.
The unit is in Design Generation 1 and includes control-side features that support wiring and status monitoring. A front-mounted terminal block uses a NAMUR terminal strip with 24 V standby power supplied externally, which allows status circuits to remain active during a line-power dropout. For output supervision, the control board provides feedback of current filter (U6, V6, W6), giving the higher-level controller access to monitored filter signals. This layout keeps low-voltage control connections separated from the power section, which helps maintain orderly panel wiring and signal access. It also supports installations where the drive must report operating conditions continuously to the surrounding control system.
Frequently Asked Questions about RD51.1-5B-011-L-DF-FW:
Q: Does the RD51.1-5B-011-L-DF-FW include an integrated brake chopper?
A: The RD51.1-5B-011-L-DF-FW features a built-in brake chopper for effective energy dissipation during braking cycles.
Q: What type of control method does the RD51.1-5B-011-L-DF-FW use?
A: This model operates using U/f curve control, which allows for variable frequency and voltage for motor regulation.
Q: How is the RD51.1-5B-011-L-DF-FW drive controller cooled?
A: Cooling is accomplished by forced air, requiring proper airflow for reliable performance.
Q: What voltage and supply type does the RD51.1-5B-011-L-DF-FW require?
A: The RD51.1-5B-011-L-DF-FW accepts a three-phase AC converter supply within a voltage range of 500 V.
Q: What connectivity and stand-by power features are available on the RD51.1-5B-011-L-DF-FW?
A: This drive controller provides a NAMUR terminal strip with 24 V external stand-by power for standardized connections.
