FANUC A20B-3400-0020

Description

Product Description FANUC A20B-3400-0020

Product Parameters FANUC A20B-3400-0020

• Device Type: Multi-channel output power supply board for FANUC 16i/18i/21i controllers.
• Electrical Characteristics:
  • Input Voltage: 100–240V AC (50/60Hz) — universal adaptation to grids in different regions.
  • Output Voltages:
    • +5V DC (current up to 10A) — powers logic circuits and microprocessors.
    • +12V DC (current up to 2A) — powers auxiliary electronic components.
    • -12V DC (current up to 1A) — powers analog circuits and sensors.
    • +24V DC (current up to 4A) — powers relays and external sensors.
  • Efficiency: ≥88% — efficient use of electrical energy.
• Protection Features:
  • Overload Protection (OCP) on all output channels — automatic shutdown when exceeding rated current.
  • Short Circuit Protection (SCP) — protects circuits during output terminal short circuits.
  • Overheat Protection (OTP) — shuts down when case temperature exceeds 75°C.
  • Under Voltage Lockout (UVLO) — activates when voltage drops below 85V AC.
• Mechanical Characteristics:
  • Dimensions: 180×120×80mm — compact design for internal controller installation.
  • Weight: 1.2kg — stable vibration resistance.
  • Operating Temperature Range: 0°C–55°C — suitable for industrial environments.
  • Protection Class: IP20 — dustproof and protects against foreign objects (for internal installation).

Advantages and Features FANUC A20B-3400-0020

• Multi-channel Output: FANUC A20B-3400-0020 provides multiple output voltages, enabling power supply to all critical controller components through a single device — saving space and reducing compatibility risks.
• High Reliability: Uses high-quality components (long-life capacitors, gold-plated contact relays), ensuring an average service life of up to 10 years under 24/7 operation.
• Comprehensive Protection: Integrates OCP, SCP, OTP, UVLO, and other protection functions to safeguard both the power board itself and connected controller components — crucial for high-value CNC systems.
• Self-diagnostic Function: Each channel has status indicator LEDs, and fault data can be transmitted to the main controller, allowing operators to quickly identify and resolve issues.

Application Cases in Industries

• Metalworking:
  Powers FANUC 21i-TB CNC lathe controllers. FANUC A20B-3400-0020 provides stable voltage for tool positioning systems, ensuring workpiece machining accuracy.
• Automotive Manufacturing:
  Supplies power to milling units for engine parts. The power board’s high reliability prevents production line shutdowns during grid fluctuations.
• Aerospace Industry:
  Powers controllers for high-precision aerospace engine component machining equipment. Precise voltage regulation avoids distortion of tool position data.

Comparison with Competing Products

• Better compatibility with FANUC controllers, optimized for 16i/18i/21i series, while competitors require additional adapters.
• More output channels (4 voltage types vs. 2–3 for competitors), reducing the need for external power sources.
• More comprehensive protection, including UVLO (Under Voltage Lockout) not found in most competitors.

Selection Suggestions and Precautions

• Selection Suggestions: Recommended for FANUC 16i/18i/21i series controllers in metalworking, automotive manufacturing, and aerospace industries. Best paired with FANUC A20B-8100-0780 I/O modules and αi-series drives.
• Precautions:
  • For FANUC A20B-3400-0020, use only original FANUC power cables (e.g., FANUC A660-2005-T810) — non-certified cables may reduce protection levels.
  • Install the board exclusively in 16i/18i/21i series controllers; use in other models may cause incompatibility or damage.
  • Regularly clean ventilation openings to prevent dust accumulation, which can cause overheating and shorten service life.
  • Do not exceed total output current; use FANUC-certified external power distributors for additional loads.

A20B-3400-0020