ABB S800 I/O DI810-1 3BSE008509R1 Modules - CM300HA-24H

Technical Dossier

Product Details And Specifications

ABB S800 I/O Series Technical Notes

The ABB S800 I/O system is a distributed I/O platform engineered for integration with the ABB Advant Controller 800M (AC800M) and the earlier AC800 / Advant OCS family. Deployed across continuous-process industries — petroleum refining, chemical manufacturing, pulp and paper, nuclear power auxiliary systems, and offshore platforms — the S800 I/O series represents one of the most widely installed distributed control system (DCS) I/O architectures in global heavy industry. Its modular backplane design, redundant fieldbus communication via PROFIBUS-DP and the proprietary AF100 optical bus, and hot-swap capability made it the reference architecture for process automation projects from the mid-1990s through the 2010s. Installed base counts in the tens of thousands of nodes worldwide, meaning lifecycle support for this series remains a critical operational requirement for plant maintenance teams.

The Evolution of S800 I/O Architecture

The S800 I/O platform was introduced by ABB in the mid-1990s as the field I/O complement to the Advant Controller 400 and later the AC800M. The original architecture used the AF100 fiber-optic fieldbus for communication between the controller and remote I/O stations. As PROFIBUS-DP became the dominant open fieldbus standard in European process industries, ABB introduced the CI854 and CI854A PROFIBUS DP-V1 communication interface modules, enabling S800 I/O clusters to operate as standard PROFIBUS slaves under third-party DCS hosts.

The hardware generations can be broadly segmented as follows. The first generation (circa 1995–2002) used the TB820 and TB840 Termination Units with direct module insertion and relied on the AF100 bus. The second generation (2002–2012) introduced the ModuleBus optical interface, the TB825 and TB845 termination boards, and expanded the analog I/O density. The third generation (2012–present) added HART pass-through on analog modules, increased channel counts, and introduced the S800+ designation for select modules with enhanced diagnostics. Compatibility between generations is maintained at the termination unit level, but firmware versions on the CI8xx communication interfaces must be matched to the AC800M controller firmware to avoid ModuleBus communication faults. Plants running AC800M firmware below version 5.1 must validate module compatibility before substituting second-generation modules with S800+ variants.

S800 I/O Full Catalog & Functionalities (SKU List)

Digital Input Modules

• DI810-1 / 3BSE008509R1: 16-channel 24 VDC digital input module, ModuleBus interface, standard density, non-isolated.
• DI811 / 3BSE008510R1: 16-channel 24 VDC digital input, high-side switching, with individual channel diagnostics.
• DI820 / 3BSE008512R1: 8-channel 120 VAC digital input module, galvanically isolated per channel group.
• DI821 / 3BSE008513R1: 8-channel 230 VAC digital input, isolated, for high-voltage field signal environments.
• DI830 / 3BSE013210R1: 16-channel 24 VDC digital input, HART-capable, S800+ generation.

Digital Output Modules

• DO810 / 3BSE008514R1: 16-channel 24 VDC digital output, 0.5 A per channel, source type.
• DO820 / 3BSE008515R1: 8-channel relay output module, 2 A per channel, SPDT contacts.
• DO821 / 3BSE013214R1: 8-channel relay output, 5 A per channel, for high-current actuator control.

Analog Input Modules

• AI810 / 3BSE008516R1: 8-channel analog input, 4–20 mA / 0–10 V, 12-bit resolution.
• AI820 / 3BSE008544R1: 8-channel analog input with HART pass-through, 4–20 mA, 16-bit resolution.
• AI830 / 3BSE040662R1: 8-channel analog input, HART, S800+ generation, enhanced diagnostics.
• AI835 / 3BSE051306R1: 8-channel RTD/thermocouple input, multi-sensor type, 16-bit resolution.

Analog Output Modules

• AO810 / 3BSE008522R1: 8-channel analog output, 4–20 mA, 12-bit resolution, non-isolated.
• AO820 / 3BSE008546R1: 8-channel analog output with HART, 4–20 mA, 16-bit resolution.
• AO830 / 3BSE040665R1: 8-channel analog output, HART, S800+ generation, loop diagnostics.

Communication Interface Modules

• CI854 / 3BSE025255R1: PROFIBUS DP-V1 communication interface, single channel, for AC800M integration.
• CI854A / 3BSE030220R1: PROFIBUS DP-V1 communication interface, redundant channel version.
• CI860 / 3BSE032444R1: Foundation Fieldbus HSE communication interface for S800 I/O clusters.

Power Supply Modules

• SD821 / 3BSE018285R1: 24 VDC power supply unit, 5 A, for S800 I/O station power distribution.
• SD822 / 3BSE018286R1: 24 VDC power supply unit, 10 A, redundant-capable configuration.

Sourcing Hard-to-Find & Obsolete S800 I/O Parts

ABB has formally transitioned several first- and second-generation S800 I/O modules to the End-of-Life (EOL) or RFQ availability review status. Modules including the DI810-1 (3BSE008509R1), AI810 (3BSE008516R1), and AO810 (3BSE008522R1) are no longer manufactured in volume and are not available through standard ABB distribution channels. For plants operating on extended maintenance contracts or running AC800M systems under a long-term service agreement, the inability to source replacement I/O modules represents a direct operational risk.

Quality Control for the S800 I/O Range

S800 I/O modules communicate with the AC800M controller via the ModuleBus protocol over optical fiber or copper backplane. Functional verification of a replacement module requires more than a visual inspection — it requires active ModuleBus communication testing. DriveKNMS applies the following test protocol to all S800 I/O modules prior to dispatch.