ABB DO818 (3BSE069053R1) – Digital Output Module for S800 I/O and 800xA/AC 800M Systems

The ABB DO818 with ordering code 3BSE069053R1 is part of the S800 I/O platform, designed for reliable digital output control in process automation. From my experience, it’s a solid fit when you need dense DO channels on a compact footprint and want straightforward integration with AC 800M controllers under 800xA. You might notice that it follows the familiar S800 architecture—module plugs onto a Termination Unit (MTU), wiring stays untouched during replacement—which typically reduces downtime during maintenance.

Typical use cases include driving solenoid valves, interposing relays, indicator lamps, and general on/off actuators where stable 24 V DC field power is common. It seems to be most appreciated in plants that standardize on S800 I/O for mixed signal types and need predictable lifecycle support from ABB.

Order Placement Process and Guarantees

• Warranty: 365 days
• Delivery: 1 week if in stock; no more than 1 month at the latest
• Payment: 50% advance payment; full payment before delivery
• Express options: FedEx, UPS, DHL

Key Features

• Native S800 I/O compatibility – Seamless with AC 800M controllers and 800xA systems, minimizing engineering effort.
• Digital output module – Intended for on/off control of 24 V DC field devices in most cases; commonly used to drive relays, lamps, and solenoids.
• Hot-swap serviceability – Module can be replaced on the MTU without disturbing field wiring, which typically shortens downtime.
• Compact, high-density form factor – Saves cabinet space and simplifies expansion when I/O counts grow.
• Channel diagnostics support – Status and fault reporting via the S800 ModuleBus improves troubleshooting in many cases.
• Flexible MTU options – Works with standard S800 Termination Units (DIN-rail), making installation straightforward for panel builders.
• System redundancy ready – Designed to fit into redundant S800 architectures driven by CI modules (e.g., CI801/CI840A family).

Technical Specifications

Application Fields

The DO818 is widely used across process industries where robust DO control is needed:

• Oil & Gas – skids, ESD outputs (via interposing relays), wellhead actuators
• Chemicals & Petrochem – solenoid valves, purge blowers, indicator stacks
• Water & Wastewater – pump starters, dosing valves, panel signaling
• Power Generation – balance-of-plant IO, dampers, lube oil systems
• Pulp & Paper / Metals – machine sequences, interlocks, line indicators

A maintenance lead at a mid-size refinery put it simply: “Swapping an S800 DO card like the DO818 takes minutes, and we don’t have to touch a single field wire.”

Advantages & Value

• Reliability – Proven ABB platform; stable long-term availability and firmware support.
• Compatibility – Drop-in fit for S800 I/O environments; works alongside DI/AI/AO cards without surprises.
• Cost Control – High channel density can reduce cabinet footprint, wiring, and spares inventory.
• Serviceability – Hot-swap design, front diagnostics, and MTU-based wiring speed up maintenance.
• Lifecycle Support – ABB documentation, asset libraries, and consistent part numbering ease long-term management.

Installation & Maintenance

• Cabinet environment – Install in a clean, ventilated panel to keep ambient within 0…55 °C; avoid vibration and condensation.
• MTU selection – Use a compatible S800 Termination Unit (e.g., TU810/TU812/TU814/TU818 series) per your wiring and channel needs.
• Field power – Provide a stable DC supply to the DO field circuits; observe polarity and grouping as per the MTU wiring diagram.
• Wiring practice – Separate high-inductive loads; use suppression (diodes or RC) on coils to protect outputs and reduce noise.
• Safety – De-energize field power before module replacement; verify lockout/tagout where applicable.
• Routine checks – Periodically inspect terminal torque, clean dust, and review channel diagnostics in the DCS.
• Firmware/config – Keep controller and I/O firmware at recommended revisions; back up configuration prior to changes.

Quality & Certifications

• CE compliant; typically UL listed for industrial control equipment
• RoHS conformity; manufactured under ISO 9001 quality systems
• Manufacturer documentation and declarations available on request
• Warranty: 365 days from shipment

If you’re standardizing on ABB S800 I/O and need a dependable digital output card, DO818 (3BSE069053R1) is a safe choice. In many cases, it cuts panel work and keeps maintenance predictable—especially when uptime matters more than anything.