ABB CI854BK01 AC 800M PROFIBUS DP-V1 Communication Interface

The ABB CI854BK01, also cataloged as the CI854B Communication Interface Module (Article Number 3BSE069449R1), operates as a dedicated hardware component for PROFIBUS DP-V1 master connectivity within ABB AC 800M controller platforms. It manages high-speed serial cyclic data transfer across two DB9 female ports, offloading communication tasks from the primary processor across the CEX-Bus backplane rail. The unit requires System 800xA version 6.0.3.2 or Compact Control Builder version 6.0.0-2 and subsequent releases for configuration execution.

Hardware Specifications

Backplane Communication Velocity and Deterministic Fieldbus Routing

The CI854B module interfaces directly with the AC 800M CEX-Bus, utilizing backplane bus communication velocity to deliver deterministic response times during cyclic I/O exchanges. Communication logic operates independently of the main controller loop, ensuring high-speed data transfer to PROFIBUS DP and PA slave subnets via linking devices without increasing CPU cycle latency. Integrated hardware isolation circuits protect the internal backplane logic from line voltage surges across both RS-485 physical channels.

Frequently Asked Questions

Q: How is dual-line network redundancy configured on the CI854B module?

A: Line redundancy utilizes both DB9 female connectors on the module faceplate, routing identical cyclic frames simultaneously across separate physical RS-485 bus cables to field devices.

Q: Can the CI854BK01 module be removed under power without shutting down the CEX-Bus?

A: Yes. The module supports hot swap functionality when mounted on the TP854 baseplate, allowing live insertion or extraction while remaining CEX-Bus modules continue normal execution.

Q: What termination requirements apply to the PROFIBUS DP ports on the CI854B?

A: Active termination must be enabled at the two physical end nodes of each PROFIBUS DP segment. Standard DB9 sub-D connectors with integrated termination resistors must be used and continuously powered.

Field Installation Guidelines

Mount the TP854 baseplate directly onto standard DIN rail, locking all side connectors into adjacent CEX-Bus slots to establish low-impedance ground and power continuity. Slide the CI854B module firmly into place until the locking tabs secure it onto the baseplate housing.

Route shielded PROFIBUS cables to the two DB9 female ports. Maintain continuous shielding through the connector body and bond the cable shield to the cabinet earth bus bar using low-impedance grounding clamps. Ensure that active bus terminators at both physical ends of the line remain powered. Provide a minimum of 50 mm clearance above and below the housing to maintain convective heat transfer within ambient limits up to +55 deg C.