ABB DO801 (3BSE020510R1) – S800 I/O Digital Output Module for 24 V DC Field Control

The ABB DO801 is a compact S800 I/O digital output module widely used with AC 800M-based systems. From my experience, it’s a straightforward way to drive 24 V DC actuators and solenoids when you need reliable switching, tight cabinet layouts, and clean integration on the S800 ModuleBus. One thing I appreciate is how it drops onto a TU8xx terminal base and just works—minimal fuss, good diagnostics, and consistent behavior across large distributed cabinets.

Company’s Order Placement Process and Guarantees

• Warranty period: 365 days
• Delivery time: typically 1 week if in stock; no more than one month at the latest
• Payment method: 50% advance payment; full payment prior to delivery
• Express delivery: FedEx, UPS, DHL

Key Features

• 16-channel 24 V DC digital outputs – Designed to switch typical field loads such as solenoid valves, contactor coils, and indicator lamps.
• High-side transistor outputs – In most cases, wiring stays simple with sourcing outputs and a shared return, reducing panel complexity.
• Short-circuit and overload handling – Channel protection helps avoid cascade faults and reduces downtime.
• S800 ModuleBus integration – Seamless with AC 800M systems via S800 I/O communication interfaces; no extra wiring tricks needed.
• DIN-rail terminal base installation – Mounts on TU810/TU812/TU814/TU818 terminal bases for quick replacement and tidy wiring.
• Status and diagnostics – You might notice clearer troubleshooting with per-channel status indication and module health LEDs.
• Compact footprint – Typically suited for high-density cabinets where space and airflow matter.

Technical Specifications

Application Fields

The DO801 shows up in batch and continuous processes—chemicals, power, water/wastewater, pulp & paper, and food & beverage. It’s also common in skid packages and OEM machinery where an AC 800M or System 800xA infrastructure is already in place. A typical use case is driving 24 V DC solenoid valves for on/off valves, interposing relays for MCC control, or stack lights and audible alarms around packaging lines.

Advantages & Value

• Reliability in continuous operation – In many cases, modules run for years with only routine checks, which keeps intervention low.
• Backward and forward compatibility – Fits into existing S800 I/O shelves, easing brownfield expansions and phased upgrades.
• Lower total cost of ownership – High channel density and easy hot-swap on terminal bases reduce engineering and downtime costs.
• Strong ecosystem – Works with ABB terminal bases, communication interfaces, and diagnostics tools already familiar to maintenance teams.
• Global availability – Typically easy to source with consistent part coding (3BSE020510R1), simplifying spares management.

Installation & Maintenance

• Mounting – Install on TU810/TU812/TU814/TU818 terminal bases on DIN rail; ensure correct keying to avoid module mismatch.
• Power & wiring – Use a clean 24 V DC field supply; size fuses or circuit protection for each output group to match load currents.
• Cabinet environment – Provide ventilation and maintain ambient temperatures within spec; keep spacing around heat-generating devices.
• Grounding & EMC – Bond DIN rail and observe cable segregation (I/O vs. power) to minimize noise; twisted pairs help for longer runs.
• Safety – De-energize field circuits before service; verify output states in the control application after any change.
• Routine maintenance – Periodically check terminal torque, clean dust, and review diagnostic alarms. Firmware and configuration are handled at the controller/ModuleBus level rather than on the DO module itself.

Supporting Components (Common Pairings)

• Terminal Bases – TU810V1, TU812V1, TU814V1, TU818 for DIN-rail mounting and field terminal access.
• System Interfaces – CI854A (PROFIBUS), CI851 (Controller ModuleBus), or other S800 I/O communication interfaces depending on system design.
• Power Distribution – 24 V DC field power feeders with individual output fusing; interposing relays where higher voltages or AC loads are required.

Quality & Certifications

• Compliance: CE marked; RoHS compliant; cULus listing typically available for S800 I/O modules.
• Manufacturing: Produced under ISO 9001 quality systems (ABB factories).
• Warranty: 365-day warranty as part of our supply terms listed above.

Note: Specifications above reflect the common configuration of ABB DO801 (3BSE020510R1) used in S800 I/O systems. For critical design limits (per-channel current and derating), please verify against your exact load profile and the official ABB datasheet for your terminal base variant.