ABB SR511 3BSE000863R1

Product Overview

SR511 is a precision power management component in the ABB Advant Master distributed process control system. The 3BSE000863R1 is defined as "Regulator 24V/5V". The core function is to convert and stabilize the +24V DC main power supply provided by the system to +5V DC voltage, to supply the digital logic circuits within the Advant Master system that have extremely high requirements for power quality.

In complex electronic systems, different types of circuits have completely different requirements for power supplies. High-power I/O modules and relays may directly use +24V, but the microprocessors and digital chips that form the "brain" of the controller require a very pure, low-ripple, and highly stable +5V power supply. The SR511 precisely plays the role of this "secondary power supply" or "on-board power supply". The 3BSE000863R1 is typically installed as an independent module within the controller rack, receiving +24V input from the independent power unit or the backplane of the rack, and passing through the internal Linear Regulation or Switching Regulation circuit. Output high-quality +5V power supply to ensure that the core control logic can operate in an extremely stable electrical environment, unaffected by fluctuations in the main power supply or changes in load.

Product Functional Features

High-precision voltage conversion and voltage stabilization

Ripple suppression. The main power supply (+24V) may introduce noise and ripple during transmission. The voltage stabilizing circuit inside the SR511 can effectively filter out these interferences and output an extremely smooth and pure +5V DC current, which is crucial for the stable operation of high-speed digital circuits.

Load regulation rate. Regardless of how the load current of the downstream digital circuit changes, the SR511 can maintain its +5V output voltage within an extremely small tolerance range, ensuring the accuracy of the logic level.

Protection and isolation

Overcurrent/short-circuit protection. If a short circuit or overload occurs in the downstream circuit, the SR511 should have an internal protection mechanism that can limit the output current or cut off the output to prevent damage to itself and the expensive downstream controller module due to overcurrent.

System-level integration and reliability

Designed specifically for the AC 400. Its physical dimensions and connectors are specially designed for the Advant Master rack, ensuring perfect mechanical and electrical compatibility.

Applicable Industry Scope

The application scenarios of SR511 are completely determined by the Advant Master system to which it belongs. The 3BSE000863R1 serves all industries that have deployed this classic DCS and have extremely high requirements for the stability of its core controller.

Energy and electricity. In the main control rooms of nuclear power plants and large thermal power plants, any controller failure caused by power supply issues is unacceptable.

Petroleum, natural gas and chemical industry. The core facilities of the oil refinery, the large-scale ethylene cracking unit, need to operate continuously for 7x24 hours.

Mining and Metallurgy. The shutdown losses of blast furnaces, converters and hot rolling production lines in integrated steel enterprises are huge.

For any factory that is still operating the ABB Advant Master/AC 400 DCS system, the SR511 is an indispensable "pacemaker" within its controller rack.

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