Description
Key Technical Specifications
- Brand: ABB
- Model Number: CI855K01
- Material Number: 3BSE018106R1
- Base Unit: TP853 (Includes 2x RJ45 Ethernet)
- Supported Protocol: Native MasterBus 300 (MB300)
- Communication Speed: 10/100 Mbps Ethernet
- Redundancy: Dual-port network redundancy (Bumpless transfer)
- Power Supply: CEX-Bus powered (≤ 3W)
- Electrical Isolation: 2.5 kV AC (CEX-Bus side), 1 kV AC (Power/Signal)
- Max Capacity: Up to 12 modules per single controller
- Operating Temperature: 0 °C to +55 °C
- Protection Rating: IP20
Product Introduction
Migrating legacy control systems without ripping out the entire plant is a massive headache. The ABB CI855K01 (3BSE018106R1) is the exact bridge you need. Designed for the AC800M controller and System 800xA, this module natively supports the MasterBus 300 (MB300) protocol. It allows modern AC800M systems to seamlessly establish peer-to-peer communication with older Advant OCS, MasterPiece 200/1, and AC410/AC450 controllers.
Bottom line—this module is built for high-availability legacy integration. It features dual RJ45 ports for automatic network redundancy, ensuring zero data loss if a cable fails. Powered directly via the CEX-Bus at under 3 Watts, it supports high-speed DataSet communication and network clock synchronization. If your plant is running a mixed-architecture DCS and needs reliable cross-system data sharing, this exact-match board prevents a six-figure panel overhaul.
Troubleshooting Quick Reference
- Fault: Redundancy LED flashing / Comm loss | Cause: Network cable fault or switch failure | Relevancy: 80% chance of physical layer issue | Quick Check: Verify dual RJ45 connections and switch port status | Fix: Replace patch cable, check switch configuration
- Fault: Peer-to-peer data not updating | Cause: MB300 DataSet misconfiguration | Relevancy: 70% chance of software mapping error | Quick Check: Review Control Builder MB300 peer config | Fix: Verify IP addresses and DataSet pointers
- Fault: Module fails to initialize | Cause: CEX-Bus seating or power drop | Relevancy: 60% chance of backplane connection | Quick Check: Reseat module, measure CEX-Bus voltage | Fix: Clean backplane pins, verify power supply load
- Fault: Clock sync errors across systems | Cause: Master clock misconfiguration | Relevancy: 50% chance of network timing issue | Quick Check: Check MB300 clock sync settings in 800xA | Fix: Designate correct master clock, verify network latency
ABB-CI855K01
Application Scenarios & Pain Points
- Brownfield Plant Upgrades: Integrating new AC800M controllers with 20-year-old Advant OCS panels. This module enables cross-system data sharing without replacing legacy racks.
- High-Availability Power Grids: Substations require zero-downtime communication. Dual-port redundancy guarantees bumpless failover during cable faults.
- Marine & Offshore Systems: Harsh environments demand isolated, reliable links. 2.5 kV isolation protects sensitive AC800M CPUs from backplane surges.
Compatible Replacement Models
- ✅ Drop-in Replacement: CI855K01 / 3BSE018106R1 (Exact Match). Hardware identical. Zero reprogramming required. Ensure TP853 base is included in the kit.
- ⚠️ Software Compatible: CI855 (Base module without TP853). Same core logic, but requires mounting base verification. Budget 1-2 hours of engineering labor to configure IP and parameters.
- ❌ Hardware Incompatible: CI871K01 (PROFINET) or CI873K01 (EtherNet/IP). Do not attempt to adapt these. Completely different protocols, missing native support, and incompatible backplane logic. Will not communicate with Advant OCS.
