ABB 3BDH000014R1 SD 812F power supply module

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ABB 3BDH000014R1 SD 812F

Product Name: ABB SD 812F
Article Number: 3BDH000014R1
Product Type: 24 VDC Power Supply Module
System: ABB Freelance DCS / AC 800F Controller System

Product Overview

The ABB SD 812F (3BDH000014R1) is a dedicated 24 VDC power supply module designed for ABB Freelance automation systems. It is mainly used together with PM 802F or PM 803F controller modules and provides stable internal power supplies for AC 800F controller modules.

The SD 812F converts redundant 24 VDC input power into regulated 5 VDC and 3.3 VDC outputs, ensuring reliable operation of control processors and I/O modules. It includes power-fail monitoring, overload protection, and short-circuit protection functions for industrial environments.

Technical Specifications

Parameter	Specification
Manufacturer	ABB
Model	SD 812F
Part Number	3BDH000014R1
Product Type	Power Supply Module
Input Voltage	24 VDC
Input Configuration	2 redundant inputs
Permissible Input Range	19.2–32.5 VDC
Output Voltage	5 VDC ±3%, 3.3 VDC ±3%
Output Current	5 VDC: 5.5 A / 3.3 VDC: 6.5 A
Maximum Output Power	35 W
Backup Energy	>20 ms
Input Current	1.7 A at 24 VDC
Rated Input Power	41 W
Weight	Approx. 0.46 kg

Key Features

• Redundant 24 VDC power input design for improved availability
• Provides stable power supply for ABB AC 800F controller modules
• Supports NAMUR-compliant power failure handling
• Power-fail signal generation for controlled CPU shutdown
• Overload, open-circuit, and sustained short-circuit protection
• LED indicators for power and operating status
• Low residual ripple and high output voltage stability

Application Range

ABB SD 812F is widely used in:

• ABB Freelance DCS control systems
• AC 800F controller stations
• Process automation systems
• Chemical and petrochemical plants
• Power generation facilities
• Water treatment and industrial infrastructure

It provides a reliable power foundation for distributed control applications requiring high availability and safe shutdown behavior.

Conclusion

The ABB 3BDH000014R1 SD 812F is a reliable industrial power supply module for ABB Freelance automation platforms. With redundant 24 VDC input, regulated 5 VDC/3.3 VDC outputs, and advanced power-failure protection, it is an essential component for maintaining stable operation of ABB AC 800F controller systems.