RD51.1-4N-030-L-D1-FW Bosch Rexroth Indramat
Wake Industrial LLC is not an authorized distributor of this product.
Wake Industrial LLC is not an authorized distributor of this product.
MPN: R911200401
Ask for AvailabilityThe Bosch Rexroth Indramat RD51.1-4N-030-L-D1-FW is a drive controller from the RD 500 Drive Controllers series. It delivers a rated power of 30 kW and operates within a voltage range of 380 to 480 V with a ±10 percent tolerance. This controller features U/f curve control, forced air cooling, an integrated mains filter, and supports an external 24 V stand-by power supply.
Internal Product Review
The RD51.1-4N-030-L-D1-FW is a Bosch Rexroth Indramat drive controller with a well-engineered design for dependable industrial duty. U/f curve control and a 30 kW rating give the unit stable speed handling and solid capacity in converter applications. Forced air cooling with an integrated mains filter supports clean operation and rounds out a highly capable drive controller.
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Product Description:
The RD51.1-4N-030-L-D1-FW is a drive controller produced by Bosch Rexroth Indramat for the RD 500 Drive Controllers series. The unit serves as the central power converter in conveyor lines, mixers, and other machinery that use squirrel-cage motors, delivering variable-frequency output so speed and torque follow the commanded process profile. It belongs to design generation 1 and fits into standard control cabinets through a book-sized frame. This layout helps conserve panel width while keeping the power section and control electronics in one enclosure.
It connects to three-phase mains within a range of 380 to 480 V, and the electronics remain stable even when line conditions deviate by ±10 %. Under those conditions, the inverter section can supply up to 30 kW of mechanical power to the motor shaft. Regulation is based on U/f curve control. The controller maintains a proportional ratio between voltage and frequency so magnetic flux inside the motor stays stable during acceleration and load changes. Thermal management is handled by forced air cooling, with a plenum and fans that move cabinet air across the heat sink. This supports continuous operation at rated load while helping keep semiconductor temperatures within their permitted range.
The input stage uses a three-phase AC converter, so the rectifier and intermediate DC link are on the same chassis. An integrated mains filter reduces conducted interference, making supplementary RFI components unnecessary in most panels. Because the drive is supplied without a built-in brake chopper, dynamic braking resistors require an external chopper module when rapid deceleration is needed. Control wiring is simplified by the NAMUR terminal strip, and a dedicated 24 V standby supply keeps the control logic powered during main disconnects. This arrangement lets digital control functions remain available while the main input is isolated.
