RZW02.1-045-006
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MPN: R911200333
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The RZW02.1-045-006 braking resistor has a power class of 45 kW and operates with a minimum connectable resistance of 6 ohms. Manufactured by Bosch Rexroth Indramat as part of the RZW Braking Resistors series, it features an IP23 protection class and galvanized steel housing. It weighs approximately 61 kilograms.
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Product Description:
The RZW02.1-045-006 Braking Resistor is developed by Bosch Rexroth Indramat. The manufacturer known for precision-engineered motion control and drive components. The resistor is optimized for effective braking energy dissipation in industrial automation applications. The unit meets strict electrical and mechanical performance criteria.
The RZW02.1-045-006 braking resistor has a resistance of 7.5 Ω and a peak power dissipation capacity of 40 kW. It is designed for high thermal load applications and features a thermal time constant of 100 ms which indicates rapid heat dissipation capability. The resistor construction supports transient energy absorption with minimal temperature rise that is suitable for dynamic braking systems in high inertia motor drives. The braking resistor is rated for a peak power load of up to 800 % of its continuous power rating. Peak operation is limited to a maximum duration of 7.2 seconds to prevent thermal overload. After each peak cycle a mandatory minimum cool down period of 112.8 seconds must be observed to allow adequate heat dissipation and ensure thermal stability. These limits are based on the resistor's thermal time constant and are critical for maintaining safe operation within design parameters. The RZW series braking resistor’s ability to handle short duration high power makes it ideal for repetitive braking applications. Its high overload capacity ensures that energy is rapidly converted into heat without performance degradation.
The RZW02.1-045-006 braking resistor has a minimum permissible resistance of 6 ohms that allows compatibility with various drive configurations and inverter outputs. It is designed for continuous operation under a short time duty (SD) cycle of 6 %. This means it can dissipate power for 6 % of a given cycle time typically 6 seconds of operation per 100 seconds without exceeding thermal limits.
Frequently Asked Questions about RZW02.1-045-006:
Q: Can the RZW02.1-045-006 handle extreme peak loads without overheating?
A: Yes, it handles peak loads up to 800 percent of its continuous rating. A maximum of 7.2 seconds is allowed per peak cycle to avoid thermal overload.
Q: How does the RZW02.1-045-006 manage heat dissipation in dynamic braking use?
A: It features a 100 ms thermal time constant for rapid dissipation. This supports transient energy absorption with minimal temperature rise in high inertia motor drives.
Q: Will the RZW02.1-045-006 braking resistor fit multiple inverter setups?
A: Its minimum permissible resistance is 6 ohms which supports compatibility. This ensures it works across varied drive configurations and inverter output conditions.
Q: How often can the RZW02.1-045-006 operate under load in a short duty cycle?
A: It is rated for a 6 percent short time duty cycle. This allows 6 seconds of operation in every 100 seconds without crossing thermal thresholds.
Q: What happens after a peak cycle in the RZW02.1-045-006 braking resistor?
A: A minimum cool down time of 112.8 seconds must follow. This cooling ensures safe operation and thermal stability during repeated high power usage.
