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ABB 3BDH000014R1 SD 812F

ABB 3BDH000014R1 SD 812F is a 24 VDC power supply module designed for the ABB Freelance DCS system. It is mainly used with PM 802F / PM 803F controller modules and provides regulated internal power for ABB AC 800F controller components.

Product Information

• Manufacturer: ABB
• Part Number: 3BDH000014R1
• Model: SD 812F
• Product Type: Power Supply Module
• Input Voltage: 24 VDC (redundant inputs)
• System: ABB Freelance / AC 800F Controller Platform
• Weight: Approx. 0.46 kg
• Dimensions: Approx. 155 × 155 × 67 mm

Technical Specifications

• Input supply:
  • 24 VDC redundant power inputs
  • Permissible input range: 19.2–32.5 VDC
• Output power:
  • 5 VDC / 5.5 A
  • 3.3 VDC / 6.5 A
• Maximum output power: Approx. 35 W
• Protection functions:
  • Overload protection
  • Short-circuit protection
  • Open-circuit protection
  • Current limiting function
• Power failure handling:
  • Generates a power-fail signal during voltage loss
  • Provides backup energy to allow controlled CPU shutdown
  • Supports approximately 20 ms power interruption management according to NAMUR requirements

Main Features

• Redundant 24 VDC power input for high system availability
• Stable DC output with low ripple voltage
• LED status indication for power and operating conditions
• Designed for reliable operation in industrial automation environments
• Supports safe shutdown and controlled restart of controller applications

Application Range

The ABB SD 812F is widely used in:

• Process automation systems
• Chemical and petrochemical plants
• Power generation facilities
• Water treatment systems
• Manufacturing automation
• ABB Freelance DCS installations using AC 800F controllers

Conclusion

The ABB 3BDH000014R1 SD 812F is a reliable redundant 24 VDC power supply module for ABB Freelance DCS and AC 800F controller systems. With stable 5 VDC and 3.3 VDC outputs, power-fail management, and industrial-grade protection features, it helps ensure continuous and safe operation of critical automation control systems.