Product Overview

The ABB 3BDH000014R1, also designated as the SD812F, is a high-performance 24V DC power supply module engineered by ABB for the AC 800F Freelance distributed control system (DCS) platform . This robust power module serves as the primary energy source for the controller’s CPU board, Ethernet modules, and fieldbus communication modules, ensuring stable and uninterrupted operation of the entire automation system . The ABB 3BDH000014R1 is specifically designed to deliver higher output power compared to the SD 802F variant, making it well-suited for future system expansions and applications with increased power demands .

The ABB SD812F converts an input voltage range of 85-264V AC into a regulated 24V DC output with a continuous current capacity of up to 10A (240W), providing reliable power for PM803F CPU boards and connected S800 I/O stations . A key feature of the ABB 3BDH000014R1 is its built-in redundancy support—the module includes two 24V DC input connectors, allowing for dual power supply configurations that eliminate single points of failure . In a redundant setup, two SD812F modules can be connected in parallel, with the internal decoupling diodes ensuring seamless load sharing and automatic failover . The ABB 3BDH000014R1 is designed for DIN-rail mounting within the AC 800F controller chassis and must be installed in the designated P-slot (first slot on the left) to ensure proper system integration . With its high efficiency (over 90%), low output ripple (<50 mVpp), and comprehensive protection features, the ABB 3BDH000014R1 is a critical component for maintaining the reliability and availability of industrial control systems.

 

Technical Specifications

Parameter Name	Value
Product Model	ABB 3BDH000014R1
Designation	SD812F
Manufacturer	ABB
Product Type	Switch Mode Power Supply Module (SMPS)
System Platform	ABB AC 800F Freelance DCS
Input Voltage	AC 85-264V (Auto-ranging) or DC 19.2-32.5V
Output Voltage	24V DC (Regulated, adjustable up to 28V)
Output Current	10A Continuous (Max. 240W)
Efficiency	>90% at Nominal Load
Output Ripple	<50 mVpp Typical
Input Connections	Two Redundant 24V DC Inputs
Output Voltages	24V DC, 5V DC (5.5A), 3.3V DC (6.5A)
Input Fuse	Recommended 4 AT (IEC/EN 60127-2)
Protection Functions	Overvoltage, Overcurrent, Short Circuit, Thermal Shutdown
Status Indicators	“DC OK” LED (Front Panel)
Operating Temperature	0°C to +55°C (-20°C to +60°C variant)
Dimensions (LxWxH)	Approx. 155 x 155 x 67 mm
Weight	Approx. 0.46 kg
Mounting Type	DIN Rail (AC 800F P-Slot)
Enclosure Protection	IP20
Certifications	CE, UL, IEC 61010-1

 

 

Main Features and Advantages

High-Power Output and System Scalability: The ABB 3BDH000014R1 delivers a robust 10A at 24V DC, providing ample power for the PM803F CPU board, Ethernet modules, and fieldbus modules within the AC 800F system . This higher output capacity compared to the SD 802F variant ensures that the ABB SD812F can support future system expansions and additional I/O modules, offering scalability for growing automation needs .

Built-in Redundancy for Maximum Availability: The ABB 3BDH000014R1 is designed with two independent 24V DC input connectors, enabling a true redundant power supply configuration . When two ABB SD812F modules are connected in parallel, the internal decoupling diodes ensure automatic load sharing and seamless failover in the event of a primary supply failure . This feature is critical for applications where system uptime is paramount, eliminating single points of failure and ensuring continuous operation.

Wide Input Range and High Efficiency: The ABB 3BDH000014R1 accepts a wide AC input range of 85-264V, automatically adapting to various mains voltages without manual configuration . Its high efficiency exceeding 90% minimizes power loss and heat generation, contributing to lower operating costs and extended component life . The ABB SD812F also provides effective mains noise suppression and a buffer time of up to 20ms during brief power interruptions, protecting against nuisance trips .

Robust Protection and Monitoring: The ABB 3BDH000014R1 incorporates comprehensive protection features, including overvoltage, overcurrent, short-circuit, and thermal shutdown with automatic recovery . The front panel “DC OK” LED provides clear visual status indication, allowing for quick diagnostics . Additionally, the ABB SD812F generates a power-fail signal to notify the system of impending voltage loss, enabling orderly system shutdown or alarm handling . This combination of protection and monitoring ensures that the ABB 3BDH000014R1 delivers reliable, interference-free power to sensitive DCS components.