RD42.1-4R-105-L/S116 Bosch Rexroth Indramat
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MPN: R911200880
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The Bosch Rexroth Indramat RD42.1-4R-105-L/S116 is a drive controller from the RD 500 Drive Controllers series. It features a voltage range of 380 to 480 V with ±10% tolerance and uses forced air cooling. The unit comes with an integrated mains filter and is designed for use as a converter with 3-phase AC supply.
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Product Description:
The RD42.1-4R-105-L/S116 is a drive controller produced by Bosch Rexroth Indramat and grouped in the RD 500 Drive Controllers series. It serves as the regulated power interface inside modular motion-control cabinets. By converting fixed-frequency three-phase mains into variable-frequency output, the unit enables precise speed regulation, closed-loop torque control, and coordinated acceleration profiles for conveyor lines, packaging actuators, and material-handling axes in automated production cells. Its modular format also supports installation in cabinet-based systems where several motion functions must operate together in a compact footprint.
The controller operates on a mains window of 380 to 480 V. Because plant voltages fluctuate, the input stage accepts a swing of ±10 % without losing regulation. Supply power arrives on a three-phase bus and immediately passes through an integrated mains filter; this built-in filter keeps conducted emissions below EMC limits, so no external line filter is required. After rectification, insulated-gate transistors synthesize the motor frequency, and the related heat is removed by forced-air cooling that directs cabinet air across the heat sinks, allowing rated current delivery even when several axes run continuously.
The power stack uses a 3 x AC converter topology and belongs to design generation 1. In this hardware release, the DC link runs without a brake chopper; instead, surplus kinetic energy from decelerating motors is returned to the grid through a dedicated regenerative energy channel. Energy recovery removes the need for braking resistors, reduces enclosure temperature, and lowers overall power consumption during high-cycle stops. Returning energy to the supply is useful on axes that decelerate often or reverse direction repeatedly during production. The recovery path is supervised by the control logic so overvoltage events are avoided while maintaining the fast response times required for indexing, hoisting, and rapid-stop safety functions.
Frequently Asked Questions about RD42.1-4R-105-L/S116:
Q: Does the RD42.1-4R-105-L/S116 drive controller come with a built-in mains filter?
A: The RD42.1-4R-105-L/S116 is equipped with integrated mains filtering for improved compatibility with industrial AC power grids.
Q: What cooling method is used in the RD42.1-4R-105-L/S116 controller?
A: This drive controller utilizes forced air cooling to maintain optimal operating temperatures during use.
Q: What is the acceptable voltage range for the RD42.1-4R-105-L/S116 drive controller?
A: The RD42.1-4R-105-L/S116 operates with a supply voltage range of 380 to 480 V AC.
Q: Does the RD42.1-4R-105-L/S116 include a brake chopper?
A: This model is produced without a brake chopper and includes an energy recovery system.
Q: What design generation does the RD42.1-4R-105-L/S116 belong to?
A: The RD42.1-4R-105-L/S116 is from design generation 1 within the RD 500 Drive Controllers series.
