RZW02.1-007-015
RZW Braking Resistors
The Bosch Rexroth Indramat RZW02.1-007-015 braking resistor belongs to the RZW Braking Resistors series and is engineered to absorb regenerative energy in industrial automation applications. It features a 7.5 kW power rating for handling substantial braking loads and an operating factor (ed) of 15% for intermittent duty. With a minimum connectable resistance of 30 Ohms, this fixed resistor design ensures reliable deceleration control in motion systems. Its primary function is to convert excess kinetic energy into heat, safeguarding drives and inverters from voltage spikes.
This resistor employs a galvanized steel housing and steel screen resistor element for robust performance in harsh environments. It has a thermal time constant of 100 s that governs heat storage and dissipation, and it operates on a normalized load cycle of 120 s to maintain stable temperature profiles. Under a 40% duty cycle, the device supports a maximum switch-on time of 48 s and a maximum switch-off time of 72 s, yielding a peak-to-continuous power ratio of 2.2. The IP20 protection rating prevents ingress of solid objects larger than 12.5 mm while requiring installation in controlled enclosures.
Additional features include the option to configure two resistors in parallel to achieve higher power handling codes as needed. For safe operation, a grounding conductor with a cross section of at least 10 mm² is recommended. The housing can reach temperatures up to 80 °C, so adequate ventilation and clearance are essential. The fixed-resistor topology with steel mesh ensures long-term durability and consistent heat dissipation. Certified to meet IP20 standards, the RZW02.1-007-015 enhances system reliability and reduces maintenance in industrial motion control by efficiently managing regenerative energy in diverse automated processes.
Technical Specifications
Action On Multiple Resistors
Two resistors in parallel for higher power codes
Cross Section For Ground Conductor
10 mm² minimum
Heat Dissipation
Housing can reach temperatures up to 80°C
Housing Material
Galvanized Steel
Maximum Switch-off Time (40% Sd)
72 seconds
Maximum Switch-on Time (40% Sd)
48 seconds
Minimum Connectable Resistance
30 Ohms
Normalized Load Cycle
Based on a load cycle of 120 seconds
Operating Factor (ed)
15% SD
Peak-to-continuous Power Ratio (40% Sd)
2.2
Power Rating
7.5 kW
Protection Rating
IP20
Resistance Type
Fixed Resistor with steel screen design
Switch-on Duration
120 seconds
Thermal Time Constant
100s
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