The ABB CI856K01 3BSE026055R1, also cataloged as the CI856K01 S100 I/O Interface Kit, operates as a dedicated hardware component for signal processing and I/O communication execution within distributed control architectures. Configured for high-speed data exchange in industrial systems, the ABB CI856K01 (CI856K01 S100 I/O Interface Kit) provides direct electrical interface between AC800M controllers and S100 I/O field nodes. The unit facilitates deterministic communication protocols necessary for maintaining process monitoring and control loops across complex automation platforms.

Module Configuration Summary

The CI856K01 kit is a singular hardware assembly comprising the CI856 interface module and the TP856 baseplate. There are no variable configuration suffixes for this part number; the assembly is fixed for compatibility with the AC800M CEX bus architecture.

Hardware Specifications

Communication & Backplane Integration

The CI856K01 utilizes optimized backplane bus communication velocity to maintain synchronization with AC800M control processors. Its architecture supports I/O density scaling, allowing for the connection of multiple interface units on the CEX communication bus. The module is engineered for firmware flash compatibility, ensuring alignment with standardized automation control strategies. This deterministic network design ensures that signal propagation delays are minimized during high-frequency data polling and control execution cycles.

## Ordering info

• CI856 interface module

• TP856 baseplate

• Installation documentation

• 36-pin Miniribbon connector interface

Field Installation Guidelines

• Grounding: Secure the module baseplate to the cabinet's protective earth bus using a low-impedance copper conductor to ensure equipotential bonding.

• Wiring: Utilize shielded signal cables for all S100 I/O connections. Ensure the 36-pin Miniribbon connector is fully latched to avoid signal intermittency due to vibration.

• Shielding: Terminate cable shields to the cabinet ground plane using conductive clamps to mitigate electromagnetic interference.

• Backplane insertion: Ensure the CEX bus is de-energized prior to seating the CI856 module onto the TP856 baseplate to prevent electrical arcing or pin damage.

• Environmental: Operate in cabinets with controlled airflow to ensure ambient temperatures do not exceed the 55 deg C thermal threshold.

Frequently Asked Questions

• Q: Does the CI856K01 support hot-swap behavior?

  A: No, the module does not support hot-swapping. The CEX bus must be isolated from power before the module is removed or installed.

• Q: How does the module impact backplane power load?

  A: The module consumes 120 mA from the 24 V supply. Calculate the total CEX bus load before adding multiple interface modules to a single controller.

• Q: Is there a redundancy switching delay?

  A: Switching performance is managed by the AC800M controller project configuration. Refer to the system software manual for specific failover timing.

• Q: Is firmware compatibility confirmed via hardware?

  A: Firmware versions must be synchronized with the AC800M control software. Use the engineering workstation to verify compatibility before deployment.

• Q: Does the module provide signal isolation?

  A: The unit includes internal galvanic isolation to separate the CEX bus logic from the S100 I/O field signals, reducing common-mode noise.

• Q: Are there field wiring constraints for the Miniribbon connection?

  A: Minimize the length of the 36-pin ribbon cable and ensure it is secured to prevent mechanical fatigue or displacement in high-vibration environments.

• Q: How is the CEX bus capacity determined?

  A: The bus supports a maximum of twelve CI856K01 interface modules per controller chain; do not exceed this limit to avoid timing errors.

• Q: Can this interface be used in legacy installations?

  A: Yes, it is backward compatible with existing S100 I/O architectures when utilized with AC800M controller systems.