Description
ABB SD822 3BSC610038R1
I. Overview
ABB SD822 3BSC610038R1 is a power supply module, with its core positioning as a precision power supply and intelligent monitoring unit for automation control systems. It belongs to ABB’s Advant OCS system product series, is originally manufactured in Switzerland, and is tailor-made for mainstream ABB controllers such as AC 800M and S800 I/O as well as fieldbus stations. Based on wide-range AC-DC dual input, this module can be accurately converted into a stable 24V DC output, integrating multiple safety protection, intelligent diagnosis and remote monitoring functions. Meanwhile, it has derived a variety of customized models including explosion-proof, redundant control and compact types. It can flexibly adapt to scenarios with stringent requirements for power supply stability and safety such as petrochemical, electric power, pharmaceutical and rail transit industries, providing reliable power supply for downstream I/O modules, sensors, actuators and controllers, and serving as a core power supply component to ensure the continuous operation of automation networks.
II. Core Features
Wide-range Dual Input and Flexible Adaptation: Compatible with 115/230V AC input (switchable), some versions support 85-265V AC wide-range input, and are also adapted to 24V DC input, which can adapt to different on-site power supply conditions without additional adapter equipment. There is a rich variety of derivative models in the series, including SD822Z explosion-proof model (complying with G3 standard), -R redundant control model, -L local LCD display model, -S compact model, etc., which can accurately match special working conditions such as hazardous areas, space-constrained environments and on-site diagnosis.
Hot-swappable and Redundant Linkage Design: Adopting a DIN rail pluggable structure, it supports hot-swappable operation, so maintenance and replacement do not require shutdown, greatly reducing the cost of unplanned downtime. It can be used with modules of the same series to build a redundant power supply system. The redundant control model (-R) can cooperate with the main power supply to achieve millisecond-level seamless switching, meeting the N+1 redundancy requirements of key processes and significantly improving the reliability of system power supply.
- Intelligent Diagnosis and Remote Monitoring: Built-in microprocessor monitors 12 key operating parameters in real time (input and output voltage, current, module temperature, etc.), equipped with RS485 communication interface and LED indicator lights. It can upload status information and fault codes to DCS and SCADA systems through communication protocols to realize remote early warning and precise positioning. The local display model (-L) is equipped with an LCD screen, which is convenient for on-site quick viewing of parameters and diagnosis of faults, improving operation and maintenance efficiency.
III. Technical Parameters
| Parameter Name | Basic Model Specification | Special Configuration of Derivative Models |
|---|---|---|
| Product Model | ABB SD822 3BSC610038R1 | SD822Z (G3 explosion-proof), -R (redundant control), -L (LCD display), -S (compact), etc. |
| Product Type | Industrial-grade intelligent power supply module (switching power supply) | Including explosion-proof type, redundant control type, compact type, temperature sensing type (-T), etc. |
| Country of Origin | Switzerland | All derivative models in the series are uniformly made in Switzerland |
| Input Parameters | AC: 115/230V AC (switchable), some versions support 85-265V AC; DC: 24V DC | -M model (modular terminal) supports multi-input combination switching |
| Output Parameters | Fixed 24V DC output, common specifications 5A/10A, maximum conversion efficiency 92% | High-power derivative models can adapt to larger load requirements |
| Environmental Adaptability | Operating temperature: -40℃~70℃; Storage temperature: -40℃~85℃; Relative humidity: 5%~95% (non-condensing) | -T model has a built-in temperature sensor to support real-time monitoring of ambient temperature |
| Installation Method | DIN rail pluggable installation, compatible with wall mounting | -S model has an optimized width of 65mm, suitable for space-constrained distribution cabinets |
| Communication and Diagnosis | RS485 communication interface, LED indicator lights, monitors 12 key parameters, outputs fault codes | -L model is equipped with a local LCD screen to support on-site parameter viewing and diagnosis |
| Dimensions and Weight | Regular size: 123mm×99mm×41mm, net weight about 0.7kg | -S model has a reduced size and its weight is further reduced to less than 0.5kg |
IV. Working Principle
ABB SD822 3BSC610038R1 power supply module realizes efficient and stable power supply based on the closed-loop working process of wide input adaptation - rectification and filtering - high-frequency power conversion - regulated output - intelligent monitoring and redundant linkage. The specific working process is divided into five core stages:
According to the type of on-site power supply, the module automatically adapts to AC or DC input, and selects 115/230V AC gear through the switch (wide-range versions do not need switching). The modular terminal model (-M) can flexibly switch input modes through terminal combination. The input voltage passes through the surge protection circuit to filter out instantaneous high-voltage interference, ensuring that the voltage stably enters the next processing link.
The AC input is converted into DC power through the internal rectifier bridge, and then the clutter and ripple signals are removed through the high-precision filter circuit to purify the voltage waveform. The DC input directly enters the filtering link to avoid the interference of the external power grid on the subsequent power conversion, providing a pure DC power foundation for high-frequency conversion.
Using the high-frequency switching characteristics of MOSFET switching tubes, the filtered DC power is converted into high-frequency pulse voltage. By adjusting the on and off time (duty cycle) of the switching tubes, the output voltage is precisely controlled. Compared with traditional linear power supplies, the conversion efficiency is greatly improved and energy loss is significantly reduced.
The high-frequency pulse voltage is converted into stable 24V DC output after secondary rectification and filtering, and the output current is dynamically adjusted according to load requirements (5A/10A specifications). At the same time, the output status is monitored in real time. When overcurrent, overvoltage, short circuit and overheating faults are triggered, the protection mechanism is activated immediately to cut off the output or limit the current, ensuring the safety of the module and downstream equipment.
