1. Product Detailed Description
The BL20-400 is an integrated servo drive designed to provide high-torque and precise speed control for brushless motors. It utilizes advanced PWM (Pulse Width Modulation) technology to manage power delivery efficiently. The "400" typically refers to its voltage or power class capability within the series, tailored for systems requiring a compact footprint without sacrificing performance.
2. Technical Parameters (Typical)
Note: Specific values can vary based on the exact sub-model or custom configuration.
| Parameter | Specifications |
| Input Voltage | Typically 28V DC (standard aerospace) up to higher industrial ranges |
| Continuous Current | ~20A - 40A (depending on cooling) |
| Peak Current | Up to 2x continuous rating for short durations |
| Efficiency | >90% at rated load |
| Control Interface | CANbus, RS-485, or Analog (0-10V) |
| Feedback Supported | Hall Sensors, Encoders, or Resolver |
| Weight | Highly optimized (Lightweight Aluminum Housing) |
| Operating Temp | -40°C to +85°C (Extended range available) |
3. Product Advantages
High Power Density: Delivers significant torque and power output relative to its very small physical size.
Ruggedized Design: Built to withstand high vibration, mechanical shock, and extreme thermal cycling.
Precision Control: Advanced algorithms ensure smooth motion, low torque ripple, and rapid response times.
EMI/EMC Compliance: Designed to meet strict electromagnetic interference standards (e.g., MIL-STD-461), making it safe for sensitive electronic environments.
4. Key Applications
The BL20-400 is found in systems where failure is not an option:
Aerospace & Defense: Actuation systems for UAVs (drones), wing flap controls, and gimbal stabilization.
Robotics: High-torque robotic arms and automated guided vehicles (AGVs).
Medical Equipment: High-end surgical robotics and diagnostic imaging motion systems.
Space Systems: Satellite antenna positioning and solar array deployment.
5. Usage Precautions
Thermal Management: While efficient, the unit generates heat at high current. Ensure it is mounted to a proper cold plate or heat sink.
Polarity Protection: Always verify wiring polarity before powering up; reverse polarity can cause permanent internal damage.
Shielding: Use shielded cables for feedback signals (encoders/Hall sensors) to prevent noise interference from the high-power PWM lines.
Firmware Configuration: Ensure the current limits and PID gains are correctly tuned for your specific motor to prevent overheating or mechanical oscillation.
