HCS04.2E-W0520-N-04-NNBN Bosch Rexroth Indramat
MPN: R911325455
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The Bosch Rexroth Indramat HCS04.2E-W0520-N-04-NNBN is an HCS Drive Controller and part of the HCS IndraDrive Controllers series. This controller supports a maximum continuous current of 387 Amps, has a mass of 110 kilograms, and uses internal air cooling through an integrated blower. It features a brake terminal rated at M10 with a brake torque of 24 Nm, and a DC bus terminal rated at M12 with a torque of 41 Nm.
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Product Description:
The HCS04.2E-W0520-N-04-NNBN is a drive controller built by Bosch Rexroth Indramat for the HCS IndraDrive Controllers series. As a regulated power stage, it converts DC energy from a common bus into variable output for synchronous or induction motors used in automated machinery. The part manages both infeeding and regenerated energy so axis groups can share power without separate supplies. Within an installation, the controller governs speed, torque, and braking of connected motors while coordinating with higher-level PLCs.
A continuous current ceiling of 387 A is the maximum current the unit can deliver without derating, allowing large servo axes to operate under heavy demand. Total converter losses at rated load are given by a power dissipation P1 of 3490 W, which combines switching and conduction losses that must be removed to keep semiconductor junctions within limits. Of that total, only 350 W remains inside the housing as internal dissipation, which simplifies cabinet heat calculations. For rapid deceleration events, the integrated brake resistor can absorb a mechanical load that generates up to 24 Nm of dynamic torque. Operation with an IP23 enclosure requires blower capacity of 800 m³/h so the exhaust temperature remains within normal operating limits.
When the same unit is sealed to IP54, airflow demand drops to 200 m³/h because external ducts guide heated air directly outside the cabinet. The DC bus connection uses a threaded M12 stud with a tightening torque of 41 Nm, which supports a low-impedance connection to adjacent drive modules. Overall mass is 110 kg, so reinforced mounting rails help limit vibration during operation. For applications with extended overload or frequent braking cycles, the secondary loss channel shown as P2 reaches 4450 W, and that heat must be removed by the plant HVAC system or an auxiliary heat exchanger. Additional provisions include an M10 brake terminal, a minimum 8 dm² air intake for IP23 setups, and an internal blower that circulates air through the fin package.
Frequently Asked Questions about HCS04.2E-W0520-N-04-NNBN:
Q: What brake terminal connection does the HCS04.2E-W0520-N-04-NNBN use?
A: The brake terminal on the HCS04.2E-W0520-N-04-NNBN drive controller is an M10 connection.
Q: What brake torque is offered by the HCS04.2E-W0520-N-04-NNBN drive controller?
A: This model provides a brake torque of 24 Nm, supporting effective braking performance in drive applications.
Q: What is the required cooling air volume for the HCS04.2E-W0520-N-04-NNBN at IP23 protection?
A: The HCS04.2E-W0520-N-04-NNBN requires a cooling air volume of 800 m3/h when operated at the IP23 protection level.
Q: What is the maximum continuous current capacity of the HCS04.2E-W0520-N-04-NNBN?
A: This drive controller supports a maximum continuous current of 387 A.
Q: How is the HCS04.2E-W0520-N-04-NNBN cooled during operation?
A: The HCS04.2E-W0520-N-04-NNBN uses internal air cooling through an integrated blower.