RD51.1-4B-004-L-CF-FW

MPN: R911200992

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The Bosch Rexroth Indramat RD51.1-4B-004-L-CF-FW Drive Controller, part of the RD 500 Drive Controllers series, features an internal fan cooling system. It operates at a supply voltage of 400V AC, supports a frequency range of 0–400 Hz, and delivers an output current of 4A. The unit is wall-mounted, weighing approximately 6 kg.

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Product Description:

The RD51.1-4B-004-L-CF-FW is a drive controller in the Bosch Rexroth range of high-performance frequency inverters. It offers adaptable functionality, adjusting performance to suit the dynamic requirements of systems driven by AC motors in industrial automation. Designed to efficiently regulate motor parameters such as velocity and rotational force, the drive supports coordinated motion across diverse tasks. It supports a frequency output range of 0 to 400Hz, allowing precise modulation of motor speed across a wide spectrum of operating conditions. This broad frequency range enables the drive to regulate both low-speed and high-speed motor applications without the need for mechanical gear changes or complex reconfigurations.

The RD51.1-4B-004-L-CF-FW provides a continuous output current of 4 A that is suitable for driving small to medium-sized AC motors that require stable current flow. This enables the motor to perform with stable torque and velocity control, ensuring system stability under standard load conditions. The drive can increase its output for intermittent periods to match peak demands, offering adaptability to application demands in dynamic operations. This models comes with an internal fan that actively cools the internal components of the drive during operation. The fan circulates air across heat-sensitive elements such as power semiconductors and control electronics, preventing thermal buildup and ensuring optimal performance over extended duty cycles. This integrated cooling system helps maintain safe internal temperatures without requiring external cooling infrastructure, simplifying installation in standard control cabinets.

The RD51.1-4B-004-L-CF-FW comes in a compact and simple design that is suited for wall-mount installation. This allows it to be securely affixed to the control cabinet or machine frame, streamlining integration into various system layouts. Wall-mounting facilitates better airflow around the unit for cooling and provides straightforward access for maintenance, enhancing usability.

Communication Interface
Standard (option for communication modules)
Control Type
Frequency Inverter / Variable Frequency Drive (VFD)
Cooling Method
Internal Fan Cooling
Dimensions
Typically 350 × 140 × 180 mm (verify specific variant)
Enclosure Rating
IP20
Frequency Range
0 – 400 Hz
Input Voltage Tolerance
± 10%
Mounting
Wall-Mounted
Output Current
4A
Phase
3-phase
Power Rating
1.5 kW (approximate typical for 4A RD51 series drives)
Supply Voltage
400V AC
Weight
Approx. 6 kg (typical for class)
  • RD5114B004LCFFW
  • RD51 1 4B 004 L CF FW
  • rd51.1-4b-004-l-cf-fw

Frequently Asked Questions about RD51.1-4B-004-L-CF-FW:

Q: What is the frequency range of the RD51.1-4B-004-L-CF-FW?

A: The RD51.1-4B-004-L-CF-FW supports a frequency output from 0 to 400 Hz. This range allows precise control of motor speed for both low- and high-speed applications.

Q: What is the output current rating of the RD51.1-4B-004-L-CF-FW?

A: The RD51.1-4B-004-L-CF-FW provides a continuous output current of 4 A. This is ideal for operating small to medium AC motors with stable current supply.

Q: What cooling method does the RD51.1-4B-004-L-CF-FW use?

A: The RD51.1-4B-004-L-CF-FW uses an internal fan for cooling. This helps maintain internal temperatures during operation and supports drive reliability.

Q: How is the RD51.1-4B-004-L-CF-FW installed?

A: The RD51.1-4B-004-L-CF-FW is designed for wall-mount installation. This allows for efficient use of cabinet space and convenient access for wiring and maintenance.

Q: What is the IP rating of the RD51.1-4B-004-L-CF-FW?

A: The RD51.1-4B-004-L-CF-FW has an IP20 rating, offering protection against solid objects but not against liquids.


Internal Product Review

  • ‘‘The RD51.1-4B-004-L-CF-FW is reliable and well-suited for industrial systems where space and precision matter. The ease of wall-mounting makes setup relatively straightforward. However, its IP20 rating limits it to protected environments, requiring installation inside a cabinet.’’

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