RS51.1-4G-050-V-V1-FW Bosch Rexroth Indramat
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MPN: R911201172
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The Bosch Rexroth Indramat RS51.1-4G-050-V-V1-FW is a basic drive from the RD 500 Drive Controllers series. It is a converter designed for 3-phase AC supply with a voltage range of 380 to 480 V and a rated power of 50 kVA. The drive features an integrated mains filter, built-in brake chopper and resistor, and supports U/f curve control.
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Product Description:
The RS51.1-4G-050-V-V1-FW is a Basic Drive from Bosch Rexroth Indramat within the RD 500 Drive Controllers series. Designed for cabinet installation in automated machinery, the unit regulates three-phase induction motors by converting line input into controlled output for conveyor, pump, and fan duties in packaging, material-handling, and utility equipment. It forms the power stage of a drive train and accepts control references from higher-level motion controllers for pulse-width-modulated motor operation. This operating approach supports adjustable motor speed in equipment that needs steady process control rather than tightly synchronized servo motion in multi-axis systems.
The drive uses a three-phase AC converter supply, allowing direct connection to industrial mains within the permitted 380 to 480 V range. Input fluctuations of ±10 % are allowed, so voltage dips or surges inside this band do not force a shutdown. Internally, the inverter section is rated for 50 kVA, which is the maximum apparent power available to the motor load without derating. The drive uses U/f curve control, a scalar method that maintains the voltage-to-frequency ratio to keep magnetic flux constant across the working speed range. That control mode is commonly used on general-purpose motor loads where stable speed adjustment is more important than complex feedback-based regulation.
The drive includes a built-in brake chopper and resistor to dissipate regenerative energy during rapid deceleration and prevent DC-bus overvoltage. For backup logic and parameter retention, the unit provides 24 V standby power from an external source, so the control electronics stay active when the main supply is isolated. This auxiliary supply keeps low-power functions available for monitoring and controlled restart behavior. Line interference is reduced by an integrated mains filter, which limits conducted emissions and reduces harmonic content returning to the plant distribution network. The housing uses generation 1 mechanical layout and remains compatible with earlier RD 500 mounting frames.
Frequently Asked Questions about RS51.1-4G-050-V-V1-FW:
Q: Does the RS51.1-4G-050-V-V1-FW include a brake chopper?
A: The RS51.1-4G-050-V-V1-FW drive controller is equipped with a built-in brake chopper and resistor for managing braking energy.
Q: What type of control does the RS51.1-4G-050-V-V1-FW use?
A: This model offers U/f curve control for variable frequency drive operation.
Q: Is a mains filter included with the RS51.1-4G-050-V-V1-FW drive?
A: The RS51.1-4G-050-V-V1-FW has an integrated mains filter to help reduce electrical interference.
Q: What voltage range does the RS51.1-4G-050-V-V1-FW accept?
A: The RS51.1-4G-050-V-V1-FW supports a voltage input range from 380 to 480 V AC.
Q: What is the rated power output of the RS51.1-4G-050-V-V1-FW drive controller?
A: This drive controller provides a rated power output of 50 kVA.
