ABB CI627A (3BSE017457R1) – Communication Interface Module for AC 800M / 800xA Systems

The ABB CI627A, part number 3BSE017457R1, is a communication interface module typically used to expand connectivity on ABB AC 800M and 800xA installations. From my experience, plants use it to bridge controllers with legacy serial or fieldbus devices without ripping out stable equipment that still does the job. You might notice that it fits the standard ABB module form factor, so it slides into existing cabinets cleanly and keeps wiring neat.

Company’s Order Placement Process and Guarantees

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

Key Features

• Designed for ABB DCS environments – Integrates with AC 800M / 800xA architectures, keeping system engineering straightforward.
• Legacy device bridging – Typically used to link controllers to existing serial or fieldbus devices, helping avoid unnecessary retrofit costs.
• Backplane-powered – Draws 24 V DC from the system backplane; no separate field PSU in most cases, wiring stays minimal.
• Compact module form factor – Fits ABB’s standard terminal/base units, so cabinet space and depth remain predictable.
• Stable operation – From what we’ve seen, it runs reliably in typical 0–55 °C control rooms with proper ventilation and EMC grounding practices.
• Serviceability – Hot-swap practices depend on system configuration, but physical replacement is usually quick with clear labeling on terminal bases.

Technical Specifications

Application Fields

You’ll typically see the CI627A in brownfield modernization projects or mixed-vendor environments where serial or legacy devices still run critical loops. Common use cases include:

• Chemicals and petrochem – connecting analyzers, rack PLCs, or package skids that speak serial protocols
• Metals & mining – interfacing weigh feeders, drives, or stacker-reclaimer subsystems
• Pulp & paper – linking legacy sections like winder controls and process analyzers
• Water & wastewater – tying RTUs and remote panels into an ABB central controller

A maintenance lead at a chemical site told us the swap-out took under 30 minutes, mainly because the base and labels stayed the same. That’s usually how it goes when the cabinet is tidy.

Advantages & Value

• Reliability – Mature hardware with predictable behavior; fewer surprises during commissioning.
• Compatibility – Fits ABB’s DCS ecosystem, so engineering hours stay modest and documentation matches the platform.
• Cost control – Lets you extend the life of field assets instead of a full rip-and-replace project.
• Supportability – Firmware and configuration handled through standard ABB tools, which reduces learning curve for teams.

Supporting Components You May Need

• PM8xx controller – The CI627A is typically paired with ABB PM8xx CPUs in AC 800M systems.
• Terminal/Base units (TU/TB series) – Matching ABB terminal bases for mounting and field wiring.
• Shielded field cables – For serial or fieldbus runs; use proper termination and grounding to maintain EMC.

Installation & Maintenance

• Cabinet – Mount on DIN rail inside an industrial cabinet; maintain ventilation clearances and avoid heat hotspots near VFDs.
• Wiring – Use shielded twisted pair for serial lines; terminate and ground shields at the designated side to avoid loops.
• ESD & safety – Power down affected segments where required; follow ESD precautions when inserting/removing modules.
• Configuration – Align firmware with your control system version; document node addresses and port settings before migration.
• Routine maintenance – Visually inspect connectors every shutdown, clean dust, verify tightness on terminals, and keep a spare module on the shelf.

Quality & Certifications

• CE, RoHS; UL/cUL for industrial control equipment (typical for ABB modules in this class)
• Manufacturer quality system aligned with ISO standards
• Supplier warranty: 365 days from delivery

If you’re matching an installed base, share your current controller type, terminal base model, and the intended protocol—this helps us confirm the exact CI627A variant and firmware so it drops in without surprises.