ABB CI801 (3BSE022666R1) – Communication Interface for S800 I/O, typically used for PROFIBUS DP integration

The ABB CI801, part number 3BSE022666R1, is a compact communication interface module for the ABB S800 I/O family. From my experience, it’s commonly applied when you want to run an S800 I/O cluster as remote I/O on a PROFIBUS DP network, keeping your field wiring intact while modernizing the controller side. You might notice that it’s sized like any S800 module, making swaps in tight cabinets much less stressful.

Order Placement Process and Our Guarantees

• Warranty: 365 days from delivery
• Lead time: 1 week if in stock; no more than one month at the latest
• Payment terms: 50% advance payment; full payment prior to delivery
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Key Features

• S800 I/O cluster interface – Provides the bridge between a rack of S800 I/O modules and a higher-level fieldbus, typically PROFIBUS DP.
• DP-V1 capability (typical) – Suits most DP masters found in brownfield plants, easing drop-in integration and diagnostics.
• Compact 45 mm-wide form factor – Fits on standard S800 terminal bases, saving panel space and speeding maintenance.
• Diagnostic LEDs and status – Quick visual checks for bus health and module state reduce troubleshooting time.
• Hot-swap friendly design (in many cases) – When used with the S800 system, module changes can typically be done without shutting down the whole rack.
• Proven ecosystem – Large installed base, GSD-based configuration with mainstream DP tools, and ready access to spare parts.

Technical Specifications

Application Fields

Plants that run PROFIBUS DP and want the flexibility of S800 I/O tend to favor this module. Typical examples:

• Brownfield upgrades where existing DP masters (Siemens, Schneider, ABB, etc.) remain in place
• Oil & gas skids and compressor stations needing compact, serviceable I/O clusters
• Water & wastewater process areas with mixed-vendor DP networks
• Pulp & paper, metals, and chemicals where remote I/O islands help reduce wiring costs
• OEM machines with standardized PROFIBUS DP controls but varied field signals via S800 I/O

A packaging OEM told us they swapped a CI801 into an existing S800 slice and were back online in under 30 minutes—no new trunk cable, just a tidy GSD update and bus test.

Advantages & Value

• Reliability – Mature S800 platform with robust diagnostics and predictable behavior during restarts.
• Compatibility – Works with mainstream PROFIBUS DP masters; GSD-based setup keeps commissioning straightforward.
• Cost Savings – Reuse existing S800 wiring and terminal bases; avoid full cabinet rewires when updating controllers.
• Serviceability – Compact modules, hot-swap friendly in many cases, and readily available spares reduce downtime.
• Support – Documentation and firmware resources are easy to source; we can also help match revisions if you’re replacing like-for-like.

Installation & Maintenance

• Cabinet & environment – Mount in an IP20 control cabinet with adequate ventilation; ambient 0–55 °C and non-condensing humidity.
• Wiring – Use shielded PROFIBUS cable, maintain correct 150 Ω termination at segment ends, and bond shields to a clean ground.
• Base selection – Install on a compatible S800 terminal base (TU8xx series). Check keying to avoid misplacement.
• EMC & grounding – Keep PROFIBUS away from high-noise power wiring; ensure common grounding for shield continuity.
• Maintenance – Periodic connector re-seating, dust cleaning, and verification of bus diagnostics. Align firmware and GSD versions with your control system.
• Spares strategy – Keeping one spare CI801 per remote rack is a practical approach in many plants.

Quality & Certifications

• CE-marked and RoHS compliant (typical for ABB S800 modules)
• UL/cUL listings are commonly available for S800 components
• Manufacturer-grade quality control and traceability
• Warranty: 365 days (our supply terms)