RD51.1-5N-037-L-C1-FW Bosch Rexroth Indramat
Wake Industrial LLC is not an authorized distributor of this product.
MPN: R911200703
No Tariffs On US Orders- Straightforward Pricing: No Rush Fees, No Credit Card Fees
The Bosch Rexroth Indramat RD51.1-5N-037-L-C1-FW is a drive controller from the RD 500 Drive Controllers series with a rated power of 37 kW. It features U/f curve control, forced air cooling, and is powered by a 3-phase AC converter with a voltage range of 500 V. The unit includes an external 24 V stand-by power function for systems up to 110 kW and does not have a built-in brake chopper.
To contact sales for pricing and lead time:
Payment Methods
Shipping Methods
Our Credentials
Product Description:
The RD51.1-5N-037-L-C1-FW is a drive controller manufactured by Bosch Rexroth Indramat and delivered within the RD 500 Drive Controllers series. It modulates the voltage and frequency supplied to three-phase induction motors so production lines, pumps, or fans can run at the speed setpoints required by the host PLC. By using this controller, a system can maintain constant torque or adjust motor output to changing process needs without mechanical gear changes or separate starter hardware, which helps keep speed control consistent across variable loads. This operating method supports variable-speed motor control in applications where fixed-speed operation would limit process flexibility.
The unit handles a continuous mechanical load of 37 kW, which helps size motors and circuit protection for medium-power machinery. Its input is specified as 3 x AC converter input, which means the controller is fed from a three-phase converter section rather than a single-phase supply. The DC link and output stages are dimensioned for a line range centered on 500 V, allowing installation on 460 V or 480 V industrial networks with margin for voltage fluctuation. Thermal management relies on forced air cooling, so axial fans move ambient air through the heat sink to dissipate switching losses continuously. Motor excitation uses U/f curve control, which applies a proportional voltage-to-frequency ratio to help keep magnetic flux stable during speed changes and preserve torque at low speeds.
The controller is supplied without a built-in brake chopper, so braking energy must be handled by an external resistor or regenerative module when rapid deceleration is required. For the control electronics and fieldbus nodes, it provides 24 V standby power, external (≤ 110 kW), so parameter memory and communication can remain active during main power interruptions. This arrangement lets communication circuits remain available while the main power stage is off. The drive is part of Design Generation 1, which helps match it with compatible option cards and enclosures. The required firmware is ordered as a separate subposition.
Frequently Asked Questions about RD51.1-5N-037-L-C1-FW:
Q: What is the rated power output of the RD51.1-5N-037-L-C1-FW drive controller?
A: The RD51.1-5N-037-L-C1-FW drive controller is rated for 37 kW of power output.
Q: What cooling method is used in the RD51.1-5N-037-L-C1-FW drive controller?
A: This drive controller utilizes forced air cooling to maintain optimal operating temperatures.
Q: What type of control does the RD51.1-5N-037-L-C1-FW drive controller support?
A: The RD51.1-5N-037-L-C1-FW supports U/f curve control for drive operation.
Q: What is the supply voltage and type required for the RD51.1-5N-037-L-C1-FW?
A: This model must be supplied by a 3-phase AC converter with a voltage range of 500 V.
Q: Does the RD51.1-5N-037-L-C1-FW drive controller have a built-in brake chopper?
A: The RD51.1-5N-037-L-C1-FW does not include a built-in brake chopper.
