RD42.1-5R-053-L Bosch Rexroth Indramat
MPN: R911200980
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The Bosch Rexroth Indramat RD42.1-5R-053-L is a drive controller from the RD 500 Drive Controllers series featuring forced air cooling with a cooling airflow of 0.12 cubic meters per second. This device has a rated output of 66 kW at 500 V and operates with a DC rated current of 100 Amps and a peak output of 100 kW for 60 seconds. It provides IP20 protection and uses converter 3 x AC supply type with a line frequency of 50/60 Hz.
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Product Description:
The RD42.1-5R-053-L is a controller produced by Bosch Rexroth Indramat and assigned to the RD 500 Drive Controllers series. Designed for cabinet mounting in process lines, the unit modulates power between a three-phase supply and induction or synchronous motors so that speed, torque, and energy consumption follow the demands of automated machinery. It does this by rectifying incoming AC power, building a DC bus, and inverting that energy through pulse-width modulation into a variable-frequency output. The control stage adjusts output voltage and frequency together to keep motor operation consistent as process demand changes. This control method supports smooth acceleration and stable motion in conveyors, pumps, and material-handling axes.
The converter accepts a 500 V supply and charges its intermediate circuit to 660 V DC ±10%. A continuous current of 100 A is available to deliver 53 kW of nominal DC-bus power. Thermal management relies on forced-air cooling that moves 0.12 m³/s across the heat sink, and this airflow removes internal losses without derating. The housing has an IP20 protection rating, so the unit must be installed in a closed electrical cabinet. The control electronics operate on 50/60 Hz plant power, allowing use with common industrial supply frequencies.
For short-term overloads, the drive can supply 150 A for sixty seconds. Under steady operation, the rated inverter stage supplies 66 kW, and the input section is matched to a 125 A fast-acting fuse with a listed line current of 90 A on the three-phase AC input. The unit does not include an internal brake chopper, so regenerative energy is returned to the line instead of being dissipated in a resistor. This is useful when driven loads feed energy back during deceleration.
Frequently Asked Questions about RD42.1-5R-053-L:
Q: What is the rated output power of the RD42.1-5R-053-L drive controller?
A: The RD42.1-5R-053-L has a rated output of 66 kW at 500 V, suitable for demanding industrial drive applications.
Q: What type of supply voltage does the RD42.1-5R-053-L require?
A: This model operates on a voltage range of 500 V using a 3-phase AC converter supply.
Q: What is the cooling method and airflow rate for the RD42.1-5R-053-L?
A: The RD42.1-5R-053-L achieves forced air cooling with a cooling airflow of 0.12 m³/s to dissipate heat efficiently.
Q: What is the peak output capability of the RD42.1-5R-053-L drive controller?
A: It can deliver a peak output of 100 kW at 500 V for up to 60 seconds, providing short-term performance boosts.
Q: What is the degree of protection rating for the RD42.1-5R-053-L?
A: This drive controller has a degree of protection rated at IP20, indicating limited protection against solid objects and no protection against liquids.