ABB 3BSE008546R1 – S800 I/O Digital Input Module for 24 VDC signals (commonly referenced as DI820)

From my experience, the code 3BSE008546R1 typically refers to the ABB S800 I/O digital input module used for 24 VDC signal acquisition in 800xA / AC 800M systems. You might notice that ABB lists this order code alongside the DI820 family, which is widely deployed for dense, cabinet-friendly digital input points. If you’re standardizing on S800 I/O, this module fits into the usual TU8xx terminal base units and rides the ModuleBus—no extra external power terminals on the front, which makes panel wiring cleaner and maintenance faster in most cases.

Order Placement Process and Guarantees

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

Key Features

• 24 VDC digital input handling – Designed for standard industrial 24 VDC on/off signals, which seems to be the most common field standard.
• S800 I/O form factor – Plugs onto TU8xx terminal units and connects via ModuleBus, keeping cabinet layouts consistent.
• High channel density – In many cases supplied as a 32-channel DI module (DI820 family), helping reduce per-point cost and cabinet space.
• 800xA / AC 800M ecosystem – Seamless integration via S800 communication interfaces (e.g., CI modules) for centralized engineering and diagnostics.
• Service-friendly design – Front diagnostics LEDs and tool-free module replacement on the terminal base allows quicker turnarounds.
• Robust operation – Typical operating range appropriate for control cabinets in process and factory environments.

Technical Specifications

Application Fields

Typical deployments include process plants where dense digital inputs matter—oil & gas skids, water treatment panels, chemical dosing systems, and turbine auxiliaries. I’ve also seen it in discrete manufacturing for conveyor sensors, interlocks, and light curtain status. When you need a stable 24 VDC DI backbone under 800xA with familiar diagnostics, this is usually a safe pick.

Advantages & Value for Procurement

• Reliability – Proven S800 platform; modules tend to run for years with minimal fuss.
• Compatibility – Fits the ABB 800xA / AC 800M ecosystem; reduces integration risk and engineering time.
• Cabinet Efficiency – High channel density usually means fewer modules and smaller panels, saving space and cost.
• Lifecycle Support – ABB documentation, spares availability, and predictable firmware baselines help maintenance teams.
• Total Cost – When you count wiring, DIN-rail footprint, and ease of replacement, the per-point cost is attractive.

A maintenance supervisor told us last quarter: “Swapping a single S800 module took less than 10 minutes. No rewiring—just lift off the old unit and clip on the new one. Diagnostics came back clean straight away.”

Installation & Maintenance

• Cabinet environment – Install on TU8xx terminal bases in a clean, dry, ventilated enclosure; maintain ambient typically 0…+55°C.
• Wiring – Land field 24 VDC signals on the terminal base; keep DI commons and shielding consistent with plant grounding practices.
• ESD & handling – Observe ESD precautions; avoid touching connector pins; insert/remove modules with power isolated unless your site procedure allows online replacement.
• Ventilation – Provide airflow around the I/O stack; follow spacing recommended for S800 modules to avoid heat buildup.
• Routine checks – Periodic inspection of terminal torque, cleaning of dust, and verification of channel status in 800xA diagnostics.
• Firmware/config – Keep controller engineering files backed up; when applicable, align module profiles/firmware with your system revision.

Quality & Certifications

• CE compliant
• UL listed/certified (for many S800 variants)
• RoHS compliance typical for the series
• Manufactured under ISO 9001 quality systems
• Manufacturer warranty typically 12 months; we provide a 365-day warranty on supply