ABB CI801-EA 3BSE022366R2 Fieldbus Communication Interface Module

Configured for high-speed PROFIBUS DP-V1 slave communication in System 800xA and S800 I/O architectures, the ABB CI801-EA 3BSE022366R2 (CI801-EA Communication Interface Module) provides direct physical/electrical execution. Mounted at the head of an S800 I/O station, the unit manages local ModuleBus traffic, coordinates Output-Set-Pass (OSP) state transitions, and processes HART pass-through data across attached I/O modules at baud rates reaching 12 Mbit/s.

Suffix Breakdown & Model Matrix

The CI801-EA designation identifies the specific hardware variant and factory-bundled accessory package within the CI801 Fieldbus Communication Interface product family.

• CI801: Base model designation for the S800 I/O PROFIBUS DP-V1 Fieldbus Communication Interface (FCI).
• -EA: Enterprise/accessory package suffix indicating the inclusion of one power supply connector and one TB807 ModuleBus Terminator required for end-of-bus electrical impedance matching.
• 3BSE022366R2: Specific ABB ordering commercial part number for the CI801-EA assembly.

Hardware Specifications

Backplane Bus Communication Velocity & ModuleBus Supervision

The CI801-EA interface module coordinates high-velocity data throughput over the internal S800 I/O ModuleBus backplane, supervising attached physical I/O channels while powering connected I/O modules through an isolated, fused power stage. Supporting Hot Configuration In Run (HCIR) mechanisms, the hardware allows engineers to add or reconfigure field I/O expansion modules on the active ModuleBus structure without interrupting active controller communication loops. Upon detecting a master communication link fault, the unit drives outputs directly into predefined Output-Set-Pass (OSP) fail-safe states to maintain process safety across field actuators.

Frequently Asked Questions

Q: Does the CI801-EA module support dynamic hot-swapping under full backplane load?

A: Standard CI801-EA hardware does not support hot-swapping; you must isolate and remove operating power prior to disconnecting or replacing the module.

Q: What function does the included TB807 accessory serve during physical station setup?

A: The TB807 ModuleBus Terminator plugs directly into the final physical slot or baseplate of the S800 I/O cluster to terminate backplane signal reflection and prevent data transmission errors.

Q: How does the CI801-EA handle field device telemetry from HART-enabled instruments?

A: The module executes HART pass-through protocols, tunneling secondary diagnostic and calibration variables from HART field sensors directly across the PROFIBUS DP-V1 layer to host asset management applications.

Field Installation Guidelines

Mount the CI801-EA vertically on a standard 35 mm DIN rail within an IP20 enclosure, ensuring that top and bottom vertical ventilation gaps remain open to maintain natural convective thermal dissipation. Attach the TB807 ModuleBus Terminator to the open end of the ModuleBus stack to establish proper electrical bus termination before applying power. Route PROFIBUS field network cables through grounding clamps at the cabinet entry point, establishing a continuous 360-degree shield connection to divert external high-frequency electrical noise to earth ground. Plug the dedicated fused 24 VDC power supply connector firmly into the module header, verifying correct supply polarity and fuse ratings prior to energizing the DC power distribution bus.