B&R 8V1090.00-2

Technical Specifications:

Functional Features:

• Rated for 40 kW continuous output — drives the largest 8MS motors
• Active front-end (AFE) option for regenerative energy feedback to grid
• Integrated brake chopper (4 kW continuous)
• Safe Torque Off (STO) per IEC 61800-5-2, SIL 3 / PL e
• Electronic cam and gearing for multi-axis coordination
• B&R SafeMOTION safety library fully integrated
• Automatic motor parameter identification

Performance Parameters:

• Positioning Accuracy: ±1 encoder count (interpolated)
• Velocity Ripple: < 0.3%
• Current Control Bandwidth: 8 kHz
• Regenerative Energy Handling: Up to 100% rated power (with AFE)
• Efficiency at Rated Load: > 96%

Material Composition:

• Housing: Die-cast aluminum (EN AC-46000), powder-coated
• Power Stage: IGBT modules (Infineon FF600R12ME4 or equivalent), 6-pack
• PCB: FR-4, 6-layer, conformal coated, gold-plated contacts
• Connectors: Screw terminals for power (M8); M23 for encoder; RJ45 for communication
• Heat Sink: Extruded aluminum with forced-air fan (80 mm)
• Capacitors: DC bus electrolytic capacitors, 10,000 µF / 450 V

Structural Features:

• Panel or DIN rail mounting with heavy-duty brackets
• Front-accessible M23 encoder connector (23-pin)
• Top-mounted RJ45 and USB service port
• Bottom-mounted screw terminals for U/V/W, PE, brake
• Integrated cooling fan with dust filter
• LED status: Power, Ready, Fault, Warning

Working Principle:
Three-phase 400 V AC input is rectified to a 565 V DC bus. The IGBT inverter (8 kHz switching) generates three-phase sinusoidal currents for the servo motor. Three nested control loops (current 8 kHz → velocity 1 kHz → position 1 kHz) ensure precise motion. Encoder feedback (Hiperface/EnDat) provides position data. Sercos III or EtherCAT delivers trajectory commands from the B&R PLC.

Advantages & Highlights:

• 40 kW output in a compact 240×300×150 mm package
• 90 A continuous current for large servo motors
• AFE option for energy-efficient regenerative braking
• SIL 3 / PL e safety with integrated STO
• Full multi-protocol support — Sercos III, EtherCAT, Powerlink, PROFINET IRT

Applicable Industries:

• Metal forming and stamping presses
• Large injection molding machines
• Wind turbine pitch and yaw drives
• Heavy-duty CNC machines
• Mining and quarry equipment
• Steel mill roll drives

Installation Requirements:

• Mount on a vertical surface or inside a cabinet with forced ventilation
• Use 16 mm² copper cable for power input (max 5 m)
• Use B&R 8YS-K0055R0.005-0 or equivalent for encoder (max 15 m)
• Ground resistance ≤ 0.1 Ω
• Ambient temperature: 0°C to +45°C (derate 2%/°C above 40°C)
• Ensure minimum 100 mm clearance in front for airflow

Usage Precautions:

• Do not exceed 90 A continuous current
• Input fuse: 125 A slow-blow (gG)
• Do not bypass the integrated brake chopper
• DC bus voltage reaches 565 V — wait 10 min after power-off before servicing
• Fan filter must be cleaned every 3 months in dusty environments
• Firmware updates only via B&R Automation Studio