RD51.1-4B-037-L-D1-FW Bosch Rexroth Indramat
Wake Industrial LLC is not an authorized distributor of this product.
MPN: R911200687
No Tariffs On US Orders- Straightforward Pricing: No Rush Fees, No Credit Card Fees
The Bosch Rexroth Indramat RD51.1-4B-037-L-D1-FW is a drive controller from the RD 500 Drive Controllers series. It features a rated power of 37 kW, supports a voltage range of 380 to 480 V, and uses forced air cooling. This controller includes a built-in brake chopper, integrated mains filter, and U/f curve control.
To contact sales for pricing and lead time:
Payment Methods
Shipping Methods
Our Credentials
Product Description:
The RD51.1-4B-037-L-D1-FW is a drive controller manufactured by Bosch Rexroth Indramat and positioned within the RD 500 Drive Controllers series. Designed for industrial automation, this unit regulates the voltage and frequency delivered to AC motors so conveyors, pumps, and fans can run at commanded speeds with repeatable process behavior. Its electronic platform interfaces with standard PLCs through isolated control terminals, which helps the drive receive command signals reliably in electrically noisy cabinet environments. This arrangement supports stable motor control in general-purpose variable-speed applications.
The controller provides a continuous mechanical output of 37 kW, which suits medium-sized induction machines used in process and material-handling equipment. Its input section accepts three-phase mains from 380 to 480 V and tolerates variations of ±10 % without loss of normal operation. The power stage uses a Converter 3 x AC topology to rectify the incoming supply and generate a variable-frequency output for the motor. Speed regulation is handled through U/f curve control, which maintains a fixed voltage-to-frequency relationship so magnetizing current remains stable through the operating range. This control method is well suited to pumps, fans, and conveyor duties that need dependable speed adjustment without complex feedback hardware.
Regenerated energy during deceleration is managed by a built-in brake chopper that connects to an external resistor and helps control DC-bus voltage during fast stopping events. Component heat is removed by forced-air cooling, permitting compact panel layouts as long as ventilation paths remain open around the unit. Line-side interference is reduced by the integrated mains filter, which helps the installation meet EMC requirements and limits noise returning to the supply. Field wiring terminates on a NAMUR terminal strip, and an external 24 V standby feed keeps the control circuits active when the mains supply is isolated. That standby arrangement allows control functions and status handling to remain available while the main power section is turned off.
Frequently Asked Questions about RD51.1-4B-037-L-D1-FW:
Q: Does the RD51.1-4B-037-L-D1-FW drive controller have a brake chopper?
A: The RD51.1-4B-037-L-D1-FW drive controller features a built-in brake chopper for integrated braking support.
Q: What type of control is used by the RD51.1-4B-037-L-D1-FW drive controller?
A: This model uses U/f curve control as its regulation method.
Q: How is the RD51.1-4B-037-L-D1-FW drive controller cooled?
A: Forced air cooling is utilized in this drive controller to maintain optimal operating temperatures.
Q: What is the rated power of the RD51.1-4B-037-L-D1-FW drive controller?
A: The RD51.1-4B-037-L-D1-FW provides a rated power output of 37 kW.
Q: What is the required voltage supply for the RD51.1-4B-037-L-D1-FW drive controller?
A: This controller operates within a voltage range of 380 to 480 V AC supplied by a 3-phase converter.
