Confirming CI845 for an installed system
CI845 is the complete reference for this Ethernet field communication interface. Use the exact code, not only the family name, when reviewing a replacement or preparing an enquiry. The final site decision depends on the installed circuit and the marked hardware revision.
Technical identification
| Technical item | Verified value / selection note |
|---|---|
| Complete designation | CI845 |
| Product family | CI845 |
| Component role | Ethernet field communication interface |
| System | ABB Select I/O and supported S800 on Ethernet |
| Network | Ethernet FCI to AC 800M |
| Ordering | 3BSE075853R1 |
| Configuration | Single or paired redundancy depending on MTU |
| Final configuration | Confirm exact nameplate, hardware revision and order options before purchase |
These CI845 details establish the selection baseline. Check the unit label and current ABB documentation for any option or approval that is not explicit in the technical table.
What must match?
The critical CI845 comparison is: Check TU860/TU865 mounting, network design, firmware, power voting, HART settings and planned redundancy. Confirm each difference with the supplier and the site engineer before approving it.
Document the terminal arrangement, supply, protective coordination or communications mapping relevant to CI845. An alternative code can require a changed parameter set, mounting layout or approval.
Duty at this site
For CI845, the expected duty is: Exchange Select I/O or supported S800 field signals with the 800xA controller architecture. Identify the source, the connected equipment and the permissive or alarm logic before ordering.
A useful handover record for CI845 includes the drawing reference, ambient condition and the operating duty. This helps distinguish a genuine equivalent from a merely similar-looking device.
What proves it works?
For CI845, the acceptance action is: Verify controller discovery, channel identity, diagnostics and changeover where redundant. Record the actual observed result, not only the power-on indication.
Retain a signed record of the CI845 test together with faults, corrections and the final nameplate information for later maintenance and procurement.
Before energizing
Inspect CI845 and its connected wiring under the approved isolation procedure. Compare the delivered code with the order, then check mechanical seating, terminals and required accessories.
Restore only reviewed settings for CI845. If the original assembly contains safety or protection functions, follow the plant's dedicated validation plan before operating the load.
Codes grouped with this model
Other CI845 codes are listed here for search and procurement reference. Their suffixes may change the coil, ratings, channel layout, interfaces or accessories, so they are not declared interchangeable with CI845.
- 3BSE075853R1 CI845
For the purchase enquiry
State the full CI845 code, installed machine or panel, quantity, required condition and delivery destination. Ask for a matching datasheet and the supplied hardware revision.
If CI845 is offered as a substitute or updated spare, request a written cross-reference covering mechanical fit, wiring, ratings and required project changes before approval.
