ABB DO818 (3BSE069053R1) – High‑density 24 VDC Digital Output Module for S800 I/O

The ABB DO818 (order code 3BSE069053R1) is a digital output module from the S800 I/O family, typically used to drive 24 VDC field devices from AC 800M/800xA systems. From my experience, it’s picked when you need a compact, high‑channel‑count output card that’s easy to wire on TU8xx terminal units and straightforward to diagnose with clear status LEDs. It seems to be a favorite on upgrade projects because it drops into existing S800 racks without surprises.

Order Placement Process and Guarantees

• Warranty: 365 days
• Lead time: In-stock items ship in about 1 week; no more than 1 month at the latest
• Payment: 50% advance payment; full payment before delivery
• Express options: FedEx, UPS, DHL

Key Features

• High channel density – Typically 32 digital outputs, ideal when panel space is tight.
• 24 VDC transistor outputs – Suited for solenoids, relays, contactors and indicator stacks in most 24 VDC plants.
• Group wiring on TU8xx MTUs – You might notice faster installation and easier field power segmentation using TU810/TU812/TU814/TU830 family MTUs.
• Status indication – Channel and module LEDs help maintenance teams locate a fault in minutes, not hours.
• Diagnostics support – Overload/short protection and per‑channel reporting are commonly used for quick troubleshooting.
• Native to S800 I/O – Seamless with AC 800M and 800xA architectures via the S800 ModuleBus.

Technical Specifications

Application Fields

You’ll typically see the DO818 in discrete and hybrid automation where 24 VDC actuators are standard:

• Packaging and material handling lines (valves, diverters, stack lights)
• Water/wastewater skids (blowers, dosing solenoids, damper control)
• Power plant balance‑of‑plant and auxiliaries
• Chemical and food processes using 24 VDC valve islands and relays
• OEM machinery where high channel density reduces cabinet count

Advantages & Value

• Panel space savings – High density reduces the number of modules and terminal blocks you need.
• Lifecycle confidence – Part of ABB’s S800 platform, widely supported in 800xA/AC 800M ecosystems.
• Lower wiring effort – Grouped terminals on TU8xx MTUs speed up field power distribution and testing.
• Procurement simplicity – Common spare across many ABB sites; usually easier to pool stock.
• Serviceability – Hot‑swappable design in most S800 racks; field teams appreciate the quick changeover.

Installation & Maintenance

• Cabinet environment: Keep within 0–55 °C, non‑condensing; allow ventilation around the rack and MTUs.
• Wiring: Use appropriately fused 24 VDC supplies; in many cases the module is wired in 4 groups for power segmentation.
• Grounding: Maintain clean reference grounds; segregate I/O wiring from power to minimize noise.
• Safety: De‑energize field power before MTU work; verify output loads don’t exceed per‑channel limits.
• Routine checks: Visually confirm LED status, clean dust from vents, and review controller diagnostics after changes.
• Firmware/config: When replacing modules, keep channel mapping identical in the controller and confirm firmware compatibility in 800xA.

Quality & Certifications

• Conformity typically includes CE and UL/cUL; RoHS compliant for most production revisions
• Manufactured for integration into ABB 800xA / AC 800M S800 I/O systems
• Supplier warranty: 365 days from delivery

Commonly Paired Components

For faster engineering, we often bundle the DO818 with matching terminal units and base accessories:

• MTUs: TU810V1 / TU812V1 / TU814 / TU830 family for DIN‑rail mounting and field terminations
• Controller side: AC 800M with CI modules for S800 ModuleBus interfacing
• Field accessories: Fused distribution and relay interface boards when switching mixed loads