RZW02.1-090-060

The RZW02.1-090-060 from Bosch Rexroth Indramat is a high-performance braking resistor within the RZW Braking Resistors series, engineered for industrial automation and heavy-duty applications. It features a precise resistance value of 3.1 Ω to efficiently dissipate kinetic energy and a substantial peak power rating of 81 kW for burst braking energy absorption. Designed for continuous duty, the resistor offers a reliable power class of 90 kW, ensuring stable operation under sustained braking cycles. The robust construction of this unit is housed in galvanized steel, providing mechanical resilience and corrosion resistance in challenging environments.

Technical capabilities of the RZW02.1-090-060 are defined by its comprehensive specification suite. The resistor’s continuous power calculation (Pcontinuous = Ppeak / Factor) allows thermal modeling for system integration, while its minimum connectable resistance of 3.75 Ω ensures compatibility with a range of drive voltages. Internal conductors feature a 2 x 50 mm² cross-section to minimize I²R losses and support high current transients. Operational duty is governed by a 60% switching duty factor (SD) with a switch-off required time of 72 s at 40% SD and a switch-on maximum time of 48 s within a 120 s load cycle, providing clear guidelines for regenerative braking intervals. A rapid thermal time constant of 100 s enables swift thermal equilibrium, preventing overheating during frequent deceleration events.

Operational features reinforce the resistor’s reliability in production environments. An IP20 protection class rating safeguards internal components from solid particulates, while the galvanized steel housing combines structural integrity with enhanced thermal conductivity. Active cooling is delivered via external ventilation with an axial ventilator, maintaining optimal temperature distribution across the resistive elements. The resistor’s design balances heat dissipation and mechanical stability, ensuring uninterrupted performance under repetitive load cycles. These features collectively reduce the risk of thermal runaway and extend service life in continuous-duty applications.

Integration of the RZW02.1-090-060 is straightforward in drive and inverter cabinets, where its standardized mounting footprint and clear electrical interface facilitate quick installation. It seamlessly interfaces with servo and variable-frequency drives to manage regenerative energy, protecting DC bus voltages from spikes. Ideal for applications in machine tools, conveyor systems, injection molding presses, and industrial robotics, this resistor enables precise braking control and enhances overall system safety. Its combination of high peak power absorption, continuous duty capability, and rugged construction makes the RZW02.1-090-060 a versatile solution for modern automation challenges. Please respond in JSON format.