Description
The ABB CI871AK01 (Catalog / Ordering Part Number: 3BSE092693R1) is a PROFINET IO Communication Interface Kit designed for the ABB System 800xA and AC 800M controller family. Mounted on CEX-Bus (Communication Expansion Bus) baseplates alongside AC 800M processors (such as PM866 or PM891), the CI871AK01 kit (comprising the CI871A module and terminal baseplate) acts as a high-speed PROFINET IO Controller, integrating field devices, motor control centers, drives, and remote I/O into the DCS architecture.
Key Specifications & Identification
| Attribute | Details |
| Manufacturer | ABB |
| Kit Model Code | CI871AK01 / CI871A |
| Catalog / Ordering P/N | 3BSE092693R1 |
| System Compatibility | ABB System 800xA / AC 800M Controller Series |
| Protocol Support | PROFINET IO (RT / Real-Time protocol class) |
| Ethernet Ports | 2 × RJ45 ports (100 Mbps Full Duplex) with integrated switch |
| Network Redundancy | Supports MRP (Media Redundancy Protocol) ring topology |
| Module Placement | Plugs into CEX-Bus extension slot on AC 800M controller baseplate |
| Status LEDs | Front-panel indicators for Run, Fault, Channel Link/Activity, and PROFINET State |
Primary System Functions
- PROFINET IO Master Controller: Scans and exchanges cyclic/acyclic process data with PROFINET IO devices (such as S800 I/O clusters, ABB ACS drives, flowmeters, and third-party gateways) at millisecond scan intervals.
- Integrated Two-Port Switch: Onboard dual Ethernet ports allow daisy-chain and MRP ring wiring configurations directly between modules without requiring external managed switches.
- Controller CEX-Bus Integration: Exchanges field input/output process maps directly over the local CEX-Bus into the AC 800M controller CPU memory space for execution in Control Builder M.
- Network & Device Diagnostics: Transmits detailed PROFINET alarm blocks, network topology views, and field device channel health into 800xA Asset Optimization and operator workstations.
Servicing & Replacement Guidelines
- Software Version Compatibility: Verify that the replacement CI871A card firmware baseline is compatible with the installed System 800xA release and Control Builder M system libraries.
- Electrostatic Discharge (ESD) Protection: Sensitive CMOS processors and Ethernet physical layer (PHY) transceiver chips require static controls. Always wear a grounded anti-static wrist strap during module replacement.
- Live Swap / Hot-Configuration: Module replacement can be performed under system power on redundant CEX-Bus baseplates. Ensure that the CEX-Bus locking mechanism is disengaged before pulling the card.
- Cable Shielding & Grounding: Always use CAT5e or CAT6 industrial shielded twisted-pair (STP) Ethernet cables with 360^\circ metallic shield grounding to prevent plant electromagnetic noise from interrupting PROFINET frames.
