RD42.1-5R-084-L/S135 Bosch Rexroth Indramat
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MPN: R911201456
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The Bosch Rexroth Indramat RD42.1-5R-084-L/S135 is a drive controller from the RD 500 Drive Controllers series. It features a bus power of 84 kW at 400 V and a rated output of 105 kW at 500 V. The controller supports forced air cooling with an airflow of 0.2 cubic meters per second and has a protection class of IP20.
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Product Description:
The RD42.1-5R-084-L/S135 is a drive controller built by Bosch Rexroth Indramat for the RD 500 Drive Controllers series. Positioned between the plant power supply and an induction or servo motor, it converts incoming three-phase power into a regulated DC link that feeds an adjustable inverter stage. In automated conveyors, mixers, and bulk-handling systems, the unit issues precise speed and torque commands that synchronize with PLC logic. This lets the connected motor respond smoothly to changing process demands, ramp commands, and load variations during continuous industrial operation.
The converter accepts a three-phase 500 V AC supply and routes it through a rectifier rated for 84 kW of bus power at 400 V. Inside, the DC link is held at 660 V DC (±10%) so the IGBT bridge can deliver a continuous motor current of 160 A. Under rated conditions, the inverter supplies 105 kW of mechanical output while drawing 150 A from the line, and a 200 A fuse secures the feeder. Generation 1 control electronics supervise link voltage and support recovery operation because the drive is supplied without a brake chopper. Returned energy can therefore be handled through the converter path during deceleration instead of being dissipated internally. The power stage is matched to this input class for regulated inverter operation.
Short-term overloads are handled through a peak armature current of 240 A, enabling up to 160 kW of output for 60-second acceleration or deceleration cycles. Thermal stability is maintained by forced-air cooling; a blower moves 0.2 m³/s of air across the heat sinks while the housing retains the IP20 protection class, which guards against solid objects and still permits cabinet airflow. An internal controller stores parameter sets and exchanges status frames over a 9600 baud serial link. The serial connection supports drive monitoring and external data exchange during operation. The drive can source 50 mA on its digital outputs and 80 mA from the 24 V rail, providing low-power service for sensors and relays.
Frequently Asked Questions about RD42.1-5R-084-L/S135:
Q: What is the rated output power of the RD42.1-5R-084-L/S135 at 500 V?
A: The RD42.1-5R-084-L/S135 drive controller operates at a rated output of 105 kW when supplied with 500 V.
Q: What cooling method does the RD42.1-5R-084-L/S135 drive controller use and how much airflow is required?
A: This model is equipped with forced air cooling and requires a cooling airflow of 0.2 m³/s.
Q: What is the rated line current for the RD42.1-5R-084-L/S135?
A: The RD42.1-5R-084-L/S135 operates with a line current of 150 A at rated power.
Q: Does the RD42.1-5R-084-L/S135 include a brake chopper?
A: This drive controller is designed without a brake chopper but supports energy recovery.
Q: What is the protection class of the RD42.1-5R-084-L/S135 drive controller?
A: It offers a protection class of IP20, providing basic protection against solid objects greater than 12.5 mm.
