RD52.1-5B-055-L-L1-FW Bosch Rexroth Indramat
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MPN: R911201370
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The Bosch Rexroth Indramat RD52.1-5B-055-L-L1-FW is a drive controller from the RD 500 Drive Controllers series. It features a built-in brake chopper and uses field oriented vector control. This unit is designed for forced air cooling and offers a rated power of 55 kW with a voltage range of 500 V.
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Product Description:
The RD52.1-5B-055-L-L1-FW drive controller is produced by Bosch Rexroth Indramat as part of the RD 500 Drive Controllers series. This unit governs AC motors in automated machinery by adjusting output frequency and current in response to encoder or process feedback. In typical installations, it serves as the regulation stage between the incoming supply and the driven axis, converting control commands into motor behavior that matches the required speed profile. That role makes it suitable for production equipment where repeatable positioning, controlled acceleration, and steady running are needed during continuous operation.
Electrically, the controller accepts a three-phase input through a 3 x AC converter front end and is intended for installations that provide up to 500 V on the DC link. Its power section is rated for 55 kW, allowing the unit to drive compatible motors across the published duty cycle. Dynamic response is supported by field-oriented vector control, which separates flux and torque components so speed changes remain stable when load inertia varies. Heat from the IGBTs and gate drivers is removed by forced-air cooling, with fan-assisted airflow directed across the heat sink to keep semiconductor temperatures within permissible limits. The combination of controlled current delivery and active cooling supports stable operation during acceleration, deceleration, and sustained load.
A built-in brake chopper dissipates regenerated energy during rapid deceleration, which reduces the need for an external resistor module in many applications. For improved low-frequency stability, the unit supports cable damping feedback (C3, D3), allowing the drive to compensate for the effects of long motor leads in distributed installations. Its architecture is identified as Design Generation 1, so option compatibility and diagnostic behavior follow the first RD 500 release. These functions help maintain predictable braking behavior and steady motor response where longer cable runs are required.
Frequently Asked Questions about RD52.1-5B-055-L-L1-FW:
Q: Does the RD52.1-5B-055-L-L1-FW include a brake chopper feature?
A: The RD52.1-5B-055-L-L1-FW comes with a built-in brake chopper, allowing it to handle braking energy internally.
Q: What control method is used by the RD52.1-5B-055-L-L1-FW drive controller?
A: This model utilizes field oriented vector control for precise control of motor speed and torque.
Q: How is the RD52.1-5B-055-L-L1-FW drive controller cooled?
A: The RD52.1-5B-055-L-L1-FW is equipped with forced air cooling for temperature management during operation.
Q: What is the rated power of the RD52.1-5B-055-L-L1-FW drive controller?
A: This controller has a rated power output of 55 kW, suitable for high power applications.
Q: What supply type and voltage does the RD52.1-5B-055-L-L1-FW require?
A: The RD52.1-5B-055-L-L1-FW operates on a 3-phase AC converter supply and supports a voltage range of 500 V.
