Description
Product Overview
The REXROTH RD52.2-4B-015-L-NN-FW is an RD500 Series drive controller/converter designed for three-phase AC motor drive applications. The unit is rated for a 3-phase 380–480 V AC supply and is identified in current listings with a 33 A input current rating. The unit is manufactured in Germany and weighs approximately 11.06 kg according to the available product listing.
Technical references identify this model as a 15 kW RD52.2 converter. The RD500 platform uses forced-air cooling, and this specific configuration includes a built-in brake chopper for applications requiring controlled braking and energy dissipation.
Key Features
- RD500 Series drive controller / converter
- Model: RD52.2-4B-015-L-NN-FW
- Three-phase 380–480 V AC input
- 33 A input current as listed for this unit
- 15 kW rated motor power
- Forced-air cooling
- Integrated brake chopper
- RD52.2 platform for industrial AC drive applications
- Made in Germany
- Approx. 11.06 kg unit weight
Technical Datasheet
| Parameter | Specification |
|---|---|
| Brand | Bosch Rexroth / Rexroth |
| Series | RD500 |
| Model / MPN | RD52.2-4B-015-L-NN-FW |
| Drive Type | RD52.2-4B-015-L-NN-FW Drive Controller / Converter |
| Input Voltage | 3AC 380–480 V |
| Input Current | 33 A |
| Rated Motor Power | 15 kW |
| Cooling | Forced air |
| Brake Function | Built-in brake chopper |
| Output Frequency | Up to 250 Hz at 4 kHz pulse frequency; RD52.2 documentation also lists higher-frequency configurations |
| Protection | IP20 reported for this model |
| Weight | Approx. 11.060 kg |
| Country of Origin | Germany |
The Bosch Rexroth RD52.2 technical documentation lists the 015 size at 15 kW with a 3-phase 380–480 V AC supply. At the 4 kHz configuration, the documented rated current is 30 A; the available product listing for this particular unit identifies 33 A as the input current. These figures refer to different electrical characteristics and should not be treated as interchangeable.
Typical Applications
This type of RD500 drive is suitable for industrial machinery where a three-phase AC motor requires variable-speed control. Typical applications can include:
- Production and processing machinery
- Material handling equipment
- Pumps and fans
- Conveyors
- Industrial machine tools
- Mechanical drive systems
- Replacement of an existing RD500 drive in maintenance applications
For a replacement project, the complete motor nameplate data and existing drive configuration should be checked before installation. The model number alone is not enough to confirm that a drive is a direct replacement for every application.
Installation & Configuration
Before connecting the drive, verify the nameplate voltage, current rating, motor power and existing cabinet configuration. The available technical information identifies this model with a 3-phase 380–480 V AC supply.
Allow sufficient ventilation around the forced-air cooling path and keep the drive away from excessive dust, moisture and heat. Power wiring, grounding, motor connections and braking circuitry should be checked against the applicable RD500 installation documentation.
For a used or surplus unit, it is recommended to record the complete nameplate information and inspect the cooling fan, terminals, connectors and enclosure before energizing the equipment.
Maintenance & Inspection
For long-term operation, maintenance should focus on:
- Checking cooling fan operation and airflow.
- Removing accumulated dust from ventilation passages.
- Inspecting power terminals for looseness or overheating.
- Checking DC bus and power-stage components during scheduled maintenance.
- Inspecting the brake circuit when braking equipment is connected.
- Recording drive faults and operating parameters before replacing a unit.
When installing a replacement drive, compare the original drive’s parameter settings with the replacement unit before returning the machine to service.
Replacement Notes
The complete ordering code RD52.2-4B-015-L-NN-FW should be matched rather than selecting a replacement only by the RD52.2 family name. Related RD500 models can have different power ratings, current ratings and configuration options.
One technical reference also associates the model with the Bosch Rexroth part number R911201239.
Because this is an older RD500-series drive, verify the motor application, input supply, power rating, firmware/configuration and braking requirements before substitution.
Identification Information
Main Part Number: RD52.2-4B-015-L-NN-FW
Series: RD500
Type: Drive Controller / Converter
Input: 3AC 380–480 V, 50/60 Hz
Rated Motor Power: 15 kW
Country of Origin: Germany
Approx. Weight: 11.060 kg
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REXROTH RD52.2-4B-015-L-NN-FW | RD500 Drive Controller 15kW 380-480V 33A
