RD52.1-7N-045-L-NN-FW Bosch Rexroth Indramat
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MPN: R911200223
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The Bosch Rexroth Indramat RD52.1-7N-045-L-NN-FW is a drive controller from the RD 500 Drive Controllers series. It features a rated power of 45 kW and operates within a voltage range of 530 to 670 V. The unit uses forced air cooling and provides field oriented vector control without a built-in brake chopper.
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Product Description:
The RD52.1-7N-045-L-NN-FW is a drive controller produced by Bosch Rexroth Indramat within the RD 500 Drive Controllers series. Installed between a common DC link and the motor terminals, it generates the variable-frequency output needed for precise speed and torque regulation on conveyors, extruders, and forming machines. Closed-loop current processing and vector algorithms help maintain stable motion profiles, support repeatable cycle timing, and reduce mechanical stress across multi-axis systems. It is well suited for applications where the load can change quickly during normal operation. The controller can also help the motor hold commanded speed more consistently during ramp-up, slowdown, and other process transitions.
This model regulates torque through field-oriented vector control, allowing the controller to align stator current with real-time rotor flux for fast dynamic response. This control method improves torque response at low speed and helps the drive react quickly to changing load demands. Thermal management relies on forced air cooling, and a rear-mounted fan moves cabinet air across the heat sink when the unit delivers its continuous output of 45 kW. The internal power section is intended for an Inverter DC supply and must be connected to a bus voltage in the range of 530 to 670 V. Within that voltage window, the controller maintains rated control performance during acceleration and can also handle energy that returns to the DC bus during regenerative braking.
The controller is supplied without a built-in brake chopper, so external dissipation hardware is required when regenerated energy cannot be absorbed by the shared bus. It is a generation 1 design, and its layout matches other early RD modules used in similar panel arrangements. The functional option slot is currently not equipped, leaving space for an added I/O board or communication interface when expanded diagnostics or network connectivity are needed. This open slot can be used later if the application requires additional communication or monitoring functions. The base unit therefore remains focused on power conversion and motion control while keeping expansion options available.
Frequently Asked Questions about RD52.1-7N-045-L-NN-FW:
Q: What is the supported voltage range of the RD52.1-7N-045-L-NN-FW drive controller?
A: The RD52.1-7N-045-L-NN-FW supports a voltage range of 530 to 670 V for flexible power input compatibility.
Q: What is the rated power output of the RD52.1-7N-045-L-NN-FW controller?
A: This model provides a rated power of 45 kW, suitable for high-demand industrial drives.
Q: What type of control is used in the RD52.1-7N-045-L-NN-FW?
A: The RD52.1-7N-045-L-NN-FW uses field oriented vector control for precise motor management.
Q: How is the RD52.1-7N-045-L-NN-FW drive controller cooled?
A: Forced air cooling is used for temperature regulation in the RD52.1-7N-045-L-NN-FW.
Q: Does the RD52.1-7N-045-L-NN-FW include a built-in brake chopper?
A: This model does not come with a built-in brake chopper.
