RD51.1-5N-015-L-C1-FW Bosch Rexroth Indramat
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MPN: R911200183
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The Bosch Rexroth Indramat RD51.1-5N-015-L-C1-FW is a drive controller from the RD 500 Drive Controllers series. It is designed for a rated power of 15.0 kW and operates on a 3-phase AC converter supply with a voltage range of 500 V. The unit uses forced air cooling and features U/f curve control, but does not include a built-in brake chopper.
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Product Description:
The RD51.1-5N-015-L-C1-FW is a drive controller from Bosch Rexroth Indramat in the RD 500 Drive Controllers series. It regulates induction-motor speed and torque in automated machinery by converting fixed-frequency three-phase power into a variable-frequency, variable-voltage output matched to process demands. This operating method supports equipment such as pumps, fans, and conveyors where stable speed control is needed across changing load conditions. Because the output frequency is adjustable, the controller can help smooth starts and reduce abrupt mechanical loading on driven equipment. It is intended for industrial automation lines that need repeatable motor behavior instead of fixed-speed operation.
The unit operates with a Converter 3 x AC front end and is intended for mains in the 500 V range, so it fits installations that distribute higher plant voltage to drive sections. Output capability reaches 15.0 kW, which suits medium-power motor duties in material handling and fluid movement systems. The controller uses U/f curve control to maintain motor flux as frequency changes, allowing open-loop speed regulation without a feedback device. In this control mode, the voltage-to-frequency ratio is adjusted to keep the motor magnetized over a practical operating range, which is suitable for general-purpose variable-speed service. Heat is removed by forced air cooling, with internal airflow moving cabinet air across the heat sink to manage semiconductor temperature.
The controller is a Generation 1 design within the RD 500 platform. A connection for 24 V standby power allows the control electronics to remain energized when the main three-phase source is disconnected. The standby supply can keep low-voltage functions active during a mains outage or service isolation, which supports orderly control behavior and status retention at the control level. The unit is supplied without a built-in brake chopper, so braking energy from rapid deceleration must be handled by an external module when the driven load has high inertia.
Frequently Asked Questions about RD51.1-5N-015-L-C1-FW:
Q: Does the RD51.1-5N-015-L-C1-FW include a built-in brake chopper?
A: The RD51.1-5N-015-L-C1-FW drive controller is designed without a built-in brake chopper.
Q: What control method is used by the RD51.1-5N-015-L-C1-FW drive controller?
A: This model operates using U/f curve control mode for motor regulation.
Q: How is the RD51.1-5N-015-L-C1-FW cooled during operation?
A: Forced air cooling is used to manage the operating temperature of this drive controller.
Q: What is the rated power output of the RD51.1-5N-015-L-C1-FW drive controller?
A: The RD51.1-5N-015-L-C1-FW offers a rated power output of 15.0 kW.
Q: What type of power supply does the RD51.1-5N-015-L-C1-FW require?
A: This drive controller is powered by a 3-phase AC supply with a voltage range of 500 V.
