RD42.1-5R-026-L Bosch Rexroth Indramat
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MPN: R911200850
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The Bosch Rexroth Indramat RD42.1-5R-026-L is a drive controller in the RD 500 Drive Controllers series. It has a rated output of 33 kW with a peak output of 50 kW for 60 seconds and operates at a DC link voltage of 660 VDC. The controller features forced air cooling, a protection rating of IP20, and supports a supply voltage range of 500 V with a supply frequency of 50/60 Hz.
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Product Description:
The RD42.1-5R-026-L is a three-phase AC drive controller produced by Bosch Rexroth Indramat and assigned to the RD 500 Drive Controllers series. It conditions converter power for induction or synchronous motors, carrying out speed and torque commands from higher-level PLCs in conveyors, extruders, and material-handling equipment. By modulating its internal DC link and insulated-gate output stage, the unit delivers regulated motor power while helping protect both the upstream supply and the connected machine load. This arrangement allows the drive to support controlled acceleration, steady running, and responsive speed changes in automated processes that depend on repeatable motor behavior.
The controller operates from a three-phase 500 V mains supply through a converter front end, and an internal DC link of 660 VDC is maintained during operation. From this bus, the inverter delivers a rated motor power of 33 kW. For short-term overloads, the output can rise to 50 kW for 60 seconds, with the corresponding current increasing from 50 A continuous to 75 A peak. Incoming line current at nominal load is 45 A, and a 63 A semiconductor fuse is used for branch circuit protection. Generation 1 design conventions place the unit in size class D, and supply tolerances of ±10% are accepted without derating.
Thermal management relies on forced air cooling, and the integrated fan moves 0.08 m³/s through the heat sink fins before exhausting upward. The steel housing stands 550 mm tall and 240 mm wide, which suits cabinet installation for a size class D drive. An IP20 enclosure rating allows mounting inside a clean electrical cabinet while keeping power terminals accessible. The drive operates on grids at 50/60 Hz, and because it does not include a brake chopper, excess kinetic energy is returned to the mains instead of being dissipated as heat inside the unit.
Frequently Asked Questions about RD42.1-5R-026-L:
Q: What is the rated output power of the RD42.1-5R-026-L controller?
A: This drive controller provides a rated output of 33 kW.
Q: What cooling method is used in the RD42.1-5R-026-L drive controller?
A: The RD42.1-5R-026-L uses forced air cooling for temperature management.
Q: What is the protection rating of the RD42.1-5R-026-L?
A: The protection rating for this model is IP20.
Q: What voltage range does the RD42.1-5R-026-L controller operate with?
A: The RD42.1-5R-026-L supports a supply voltage range of 500 V.
Q: Does the RD42.1-5R-026-L include a brake chopper?
A: This model does not include a brake chopper and uses a recovery configuration.
