B&R 8V1090

Technical Specifications

• Mains Input: 3‑phase 380‑480 VAC ±10 %, 50/60 Hz
• Switching Frequency: 5 kHz / 10 kHz / 20 kHz adjustable
• Continuous Output Current: 8 A; Peak current: 30 A
• Operating Ambient Temperature: 0 °C ~ +45 °C; derating above 45 °C
• Storage Temperature: −20 °C ~ +85 °C
• Maximum Installation Altitude: 500 m without derating; current derating for higher altitude
• Communication Interface: POWERLINK real‑time Ethernet
• Efficiency: Up to 96 % for regenerative energy feedback
• Weight: Approximately 1.5 kg
• Functional Features
• Three‑level IGBT topology, active grid regeneration, converts braking energy into sinusoidal AC power fed back to mains
• Multi‑module parallel support (max 4 units in parallel) for high‑power system expansion
• Built‑in harmonic suppression, THDi < 3 %
• Integrated Safe Torque‑Off (STO) safety function
• Over‑voltage, under‑voltage, over‑current, over‑temperature fault protection
• Real‑time diagnostic function accessible via Automation Studio software
• Compact book‑style cabinet‑mount design, reduces cabinet space occupation
• Application Scenarios: Multi‑axis machine tools, packaging lines, printing presses, material‑handling equipment, metal‑processing machinery, production‑line retrofitting projects with frequent braking energy generation
• Performance Parameters: Fast current‑loop response; supports high‑dynamic servo‑motor control; real‑time communication cycle down to 50 μs; overload capacity of twice nominal current for short‑time acceleration.
• Material Composition: Metal sheet‑metal housing, high‑power IGBT power modules, high‑voltage DC‑link capacitors, signal‑processing printed circuit boards, screw‑type power terminals.
• Structural Characteristics: Book‑size modular unit, cabinet‑mount installation; front‑side terminal area for power and signal wiring; internal separate power‑stage and signal‑circuit layout for EMC performance; side‑by‑side multi‑module stacking‑installation capability.
• Working Principle: The unit rectifies three‑phase AC input to DC‑bus voltage; during motor braking, regenerative power on DC‑bus is inverted back to AC sine‑wave and fed to power grid through three‑level IGBT circuit; communicates with upper‑level controller via POWERLINK to receive motion‑control commands and transmit status data.
• Installation Requirements: Install inside industrial control cabinet with sufficient ventilation air flow; maintain clearance above and below for heat dissipation; strictly follow EMC wiring specification for power cables and encoder cables; ground protective‑earth terminal reliably; respect altitude‑related current‑derating rules.