RD52.1-4B-018-L-V1-G3-T1-FW Bosch Rexroth Indramat
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MPN: R911289243
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The Bosch Rexroth Indramat RD52.1-4B-018-L-V1-G3-T1-FW is a drive controller from the RD 500 Drive Controllers series. It operates with a rated power of 18.5 kW and supports a voltage range of 380 to 480 V with a ±10% tolerance. This model features field oriented vector control, integrated mains filter, and a built-in brake chopper.
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Product Description:
Bosch Rexroth Indramat manufactures the RD52.1-4B-018-L-V1-G3-T1-FW in the RD 500 Drive Controllers series. The unit is a three-phase inverter that governs induction or synchronous motors in automated lines, letting the connected machine match commanded speed and torque to changing load conditions. It belongs to generation 1 of the platform and is intended for installation inside a control cabinet where it interfaces with upstream PLC logic and downstream power hardware. This arrangement supports coordinated motor control in applications that need steady speed regulation and responsive acceleration.
The controller processes current vectors with field-oriented vector control, so stator currents are separated into torque-producing and flux-producing components for fast dynamic response. Rated output is 18.5 kW, which suits mid-range conveyors, pumps, extruders, and similar machinery. Mains terminals accept 380 to 480 V, allowing operation on common industrial low-voltage networks. The power stage is built as a 3 x AC converter, meaning it rectifies three-phase input and inverts the DC bus back into controlled AC for the motor. Component tolerances on supply magnitude, control thresholds, and internal sensors are held within ±10%, helping the drive maintain predictable response during normal utility variation.
An internal built-in brake chopper routes regenerated energy from rapid deceleration to an external resistor, preventing DC-bus overvoltage without extra modules. Thermal management relies on forced air cooling; the housing includes a fan that draws cabinet air across the heat sink to keep semiconductor temperatures within operating limits. A line-side integrated mains filter attenuates high-frequency switching noise and reduces conducted emissions toward the plant transformer. Control electronics remain powered during mains loss through 24 V standby power supplied from an external source, so the keypad, fieldbus interface, and fault memory remain available during an orderly shutdown or diagnostic review.
Frequently Asked Questions about RD52.1-4B-018-L-V1-G3-T1-FW:
Q: Does the RD52.1-4B-018-L-V1-G3-T1-FW include a brake chopper?
A: The RD52.1-4B-018-L-V1-G3-T1-FW is equipped with a built-in brake chopper for safe dynamic braking operations.
Q: What type of control is used in the RD52.1-4B-018-L-V1-G3-T1-FW drive controller?
A: This model supports field oriented vector control to achieve precise speed and torque regulation.
Q: What cooling method is implemented in the RD52.1-4B-018-L-V1-G3-T1-FW controller?
A: Air forced cooling is used in this model to maintain optimal operating temperature.
Q: Is there a mains filter included in the RD52.1-4B-018-L-V1-G3-T1-FW drive controller?
A: An integrated mains filter is included, providing electrical noise suppression for the installation.
Q: What is the rated power of the RD52.1-4B-018-L-V1-G3-T1-FW drive controller?
A: The rated power output of this drive controller is 18.5 kW, suitable for medium-sized industrial motors.
