ABB SD832

Technical Dossier

Product Details And Specifications

ABB SD832 Power Supply Module Technical Notes

The ABB SD832 is a 24 VDC power supply module designed for use within the ABB Advant Controller 450 (AC450) and MOD 300 distributed control system (DCS) platforms. These platforms have been deployed extensively across global heavy industry sectors including petrochemical refineries, nuclear power stations, pulp and paper mills, and offshore oil and gas facilities. The SD832 provides regulated DC power to the controller backplane, supporting continuous process operations where power interruption tolerance is zero. Its form factor conforms to the Advant S800 I/O and AC450 rack standards, making it a direct-fit replacement in legacy installations that remain operational well beyond the original product lifecycle.

The Evolution of ABB Advant / MOD 300 Architecture

The ABB Advant product family was introduced in the late 1980s as a successor to the MASTER and MOD 300 control systems. The architecture evolved through several generations: the early MOD 300 used proprietary MasterBus 300 communication, while the Advant Controller series (AC110, AC160, AC410, AC450) progressively adopted PROFIBUS, MasterFieldbus, and later Ethernet-based supervisory links. The SD-series power supply modules (SD821, SD822, SD831, SD832, SD833) were developed in parallel to support increasing backplane current demands as I/O density grew. The SD832 represents the mid-range output class within this family, rated for installations requiring stable 24 VDC at moderate current loads. As ABB transitioned its DCS portfolio toward the System 800xA platform (introduced circa 2004), the Advant/MOD 300 hardware entered a managed end-of-life phase. However, installed base volumes in critical infrastructure mean that SD832 units remain in active service globally, with demand for spare and replacement units sustained through independent distributors and MRO suppliers.

ABB SD832 Full Catalog & Functionalities (SKU List)

The following SKUs represent verified components within the ABB Advant / MOD 300 / S800 I/O ecosystem. Each module is categorized by functional role.

Power Supply Modules

• SD821: 24 VDC power supply, 3 A output, for S800 I/O stations
• SD822: 24 VDC power supply, 5 A output, redundant-capable configuration
• SD831: 24 VDC power supply module, single output, AC450 backplane compatible
• SD832: 24 VDC regulated power supply module, mid-range current, AC450 / MOD 300 rack mount
• SD833: 24 VDC power supply, high-current output, for expanded I/O rack configurations
• SD834: Redundant power supply module, dual-feed input, hot-swap capable

CPU / Controller Modules

• PM851: AC800M process controller module, 32 MB RAM, dual Ethernet ports
• PM856: AC800M high-performance controller, extended memory, redundancy support
• PM860: AC800M controller module with integrated fieldbus interface
• PM864: AC800M controller, 64 MB RAM, supports SIL 2 safety applications
• PM866: AC800M controller module, high-speed processing, redundant CPU option

Digital Input / Output Modules

• DI810: 24 VDC digital input module, 16 channels, S800 I/O series
• DI811: 24 VDC digital input, 16 channels, HART-compatible variant
• DO810: 24 VDC digital output module, 16 channels, 0.5 A per channel
• DO814: 24 VDC digital output, 16 channels, high-current 2 A per channel

Analog Input / Output Modules

• AI810: 8-channel analog input, 4–20 mA / 0–10 V, S800 I/O
• AI820: 8-channel analog input with HART protocol support, 4–20 mA
• AO810: 8-channel analog output, 4–20 mA, S800 I/O series
• AO820: 8-channel analog output with HART, 4–20 mA, loop-powered

Communication / Fieldbus Adapter Modules

• CI854: PROFIBUS DP communication interface module for AC800M
• CI857: FOUNDATION Fieldbus HSE communication interface, AC800M
• CI858: DeviceNet communication interface module, AC800M compatible