ABB CI867K01 3BSE043660R1 Communication Interface Module

The ABB CI867K01, also cataloged as the CI867 Communication Interface Module, operates as a dedicated hardware component for Modbus TCP protocol execution within ABB AC 800M and System 800xA control networks. The unit mounts onto the CEX-Bus backplane to establish dual-channel Ethernet communication between an AC 800M controller processor and external Modbus TCP field devices.

Hardware Specifications

CEX-Bus Deterministic Networks & Dual-Channel Routing

The CI867 interface module processes Modbus TCP framing across two dedicated Ethernet channels to maintain deterministic network throughput without overloading the primary AC 800M processor core. Operating over the internal CEX-Bus backplane, the unit draws a typical current of 160 mA at +24 VDC while delivering fast socket-level data transfers. Channel 1 operates at dual rates of 10/100 Mbit/s, whereas Channel 2 provides fixed 10 Mbit/s link speeds. The module supports full hot-swap maintenance and module redundancy profiles, allowing engineers to replace or upgrade active communication nodes on the backplane rail without interrupting live DCS system operation.

Frequently Asked Questions

Q: What is the primary difference between Channel 1 and Channel 2 on the CI867 module?

A: Channel 1 supports auto-negotiating 10/100 Mbit/s Ethernet transmission speeds, while Channel 2 operates at a fixed rate of 10 Mbit/s. Furthermore, field technicians must verify that external switch ports attached to Channel 2 match the forced 10 Mbit/s speed setting.

Q: Can a failing CI867 module be swapped out while the AC 800M backplane is energized?

A: Yes, the CI867 supports online hot swapping on the CEX-Bus backplate. Furthermore, technicians must ensure that redundant module pairs have taken over active Modbus TCP master/slave sockets prior to unlatching the hardware from the DIN rail rail.

Q: How many CI867 communication modules can be attached to a single AC 800M controller?

A: Up to 12 CI867 modules can be mounted on the CEX-Bus expansion rail of a single AC 800M controller assembly.

Field Installation Guidelines

• Backplane Insertion and Mounting: Position the baseplate on the 35 mm DIN rail and connect the CEX-Bus side terminal before sliding the CI867 module into its card slot. Lock the mechanical retaining clips to establish firm backplane grounded contact.
• Shielded Cabling and Ethernet Termination: Connect CAT5e STP (Shielded Twisted Pair) cables with 8-pin RJ-45 male connectors to the Channel 1 and Channel 2 ports. Secure the cable braid shields directly to the cabinet ground bar using grounding clamps to minimize high-frequency electromagnetic noise.
• Wiring Separation and Environmental Limits: Route network communication lines through separate wire ducts away from AC power lines and high-voltage drive outputs by at least 200 mm. Ensure cabinet ambient temperature remains between 0 and +55 deg C with non-condensing relative humidity below 95%.