Description
ABB CI801 3BSE022366R1
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | ABB |
| Type Designation | CI801 |
| Product ID | 3BSE022366R1 |
| Product Type | Communication Module / Fieldbus Communication Interface |
| Product Family | ABB S800 I/O |
| Fieldbus | PROFIBUS DP-V1 |
| Network Role | Slave |
| Line Redundancy | No |
| Module Redundancy | No |
| Hot Swap | No |
| Nominal Supply | 24 VDC |
| Supply Range | 19.2–30 VDC |
| Typical 24 VDC Consumption | 140 mA |
| Operating Temperature | 0 to +55 °C |
| Storage Temperature | -25 to +70 °C |
| Relative Humidity | 5–95%, non-condensing |
| Corrosion Protection | ISA-S71.04 G3 |
| Approx. Dimensions | 136 × 85.8 × 58.5 mm |
| Approx. Weight | 0.3 kg |
| Mounting | S800 I/O station / ModuleBus architecture |
| Included Accessories | Power supply connector, TB807 ModuleBus terminator |
ABB describes CI801 as an S800 I/O Fieldbus Communication Interface that performs signal processing, supervision of the I/O ModuleBus, OSP handling, configuration, HART pass-through, and related communication functions. The current ABB data sheet specifies PROFIBUS DP-V1, slave operation, no line or module redundancy, and a typical 24 VDC consumption of 140 mA.
The published environmental and dimensional figures above are consistent with available CI801 technical records. For an installed replacement, the actual cabinet design, mounting orientation, surrounding heat load, and applicable system approvals should still be checked against the project documentation.

CI801 3BSE022366R
Product Introduction
The ABB CI801 3BSE022366R1 is a PROFIBUS DP-V1 Fieldbus Communication Interface for the ABB S800 I/O platform. It sits between the controller-side PROFIBUS network and the S800 I/O station, handling communication and supervisory functions rather than acting as a conventional analog or digital I/O module. ABB specifies functions including signal processing, I/O ModuleBus supervision, OSP handling, HART pass-through, and I/O configuration.
For maintenance teams, the important point is that CI801 is part of the complete S800 I/O communication architecture. Replacing it is not simply a matter of matching the PROFIBUS connector. The controller configuration, PROFIBUS addressing, connected modules, firmware/software compatibility, ModuleBus termination, and installed hardware revision all need to agree. ABB also documents specific modules that are not supported by the basic system software loaded in , so the I/O bill of material should be checked before a replacement is approved.
Engineering Pain Point
A common field problem with older installations is treating the communication interface as an isolated component. A can be electrically correct yet still be unsuitable for the installed I/O configuration if the replacement revision or system software does not support the connected modules. ABB’s documentation specifically identifies unsupported modules for the basic software, including DI825, DI830, DI831, DI885, AI880, DI880, and DO880 in the referenced documentation. This makes the exact hardware revision and I/O configuration important during replacement planning.
Typical Applications
- ABB distributed I/O stations — Provides the PROFIBUS DP-V1 communication path between the controller and I/O architecture.
- Process control systems — Suitable for distributed measurement and control applications where I/O is connected through PROFIBUS.
- Legacy ABB control-system maintenance — Used when maintaining installed I/O infrastructure rather than redesigning the complete control architecture.
- HART-enabled instrumentation — The architecture supports HART pass-through where the associated I/O module and system configuration provide that function.
Technical Pitfalls to Avoid
- Do not order against “3BSE022366R” alone. ABB’s published product identification is 3BSE022366R1. Confirm the complete suffix on the module label, purchase record, or approved BOM before procurement.
- Check the I/O module mix. The documentation identifies several modules that are not supported by the basic software loaded in . Do not assume every module is interchangeable across software revisions.
- Verify PROFIBUS configuration. Check the station address, GSD/configuration data, controller-side PROFIBUS settings, cable termination, and network topology before commissioning.
- Do not confuse with CI840A. ABB identifies CI840A as the PROFIBUS DP-V1 interface used where redundant communication architecture is required. itself is documented without line or module redundancy.
- Check the ModuleBus termination. is supplied with a TB807 ModuleBus terminator. The termination arrangement is part of the station architecture and should be checked during replacement.
- Confirm the power supply before energizing. The published operating supply range is 19.2–30 VDC. Check the actual 24 VDC distribution, fuse protection, polarity, and cabinet voltage drop rather than assuming the field supply is correct.
Related Products
- ABB CI840A — PROFIBUS DP-V1 communication interface intended for redundant communication architectures; it should not be treated as a drop-in substitute for a non-redundant installation.
- ABB -eA / later revision — A later hardware revision may be encountered during lifecycle replacement. Verify the installed system software and compatibility before treating revisions as equivalent.
- ABB TB807 — ModuleBus terminator supplied with and used as part of the I/O station architecture.
- ABB TU846 — MTU associated with redundant CI840 configurations; architecture and mounting arrangement differ from a standard installation.
- ABB TU847 — MTU used with CI840-based non-redundant I/O arrangements; verify the intended architecture before substitution.
- ABB DI825 / DI830 / DI831 / DI885 — I/O modules specifically relevant to software compatibility checks because ABB documentation identifies restrictions for the basic software.
- ABB AI880 / DI880 / DO880 — Additional I/O modules identified in ABB’s compatibility documentation; verify system software before deployment.
Procurement Note
For a replacement request, specify ABB , Product ID 3BSE022366R1 rather than the shortened 3BSE022366R designation. Before approving the part, compare the installed module label, hardware revision, controller type, PROFIBUS configuration, I/O module list, and software compatibility.
For a critical plant replacement, the safest procurement package includes a photograph of the installed label, the existing system hardware configuration, PROFIBUS station information, and the I/O BOM. This avoids buying a physically matching communication module that later requires configuration or compatibility changes during a shutdown.
