Introduction
As power grids and industrial plants converge, the need for seamless communication between process automation and electrical control has never been greater. The ABB CI868A, part of the AC 800M family, addresses this challenge by enabling direct integration with IEC 61850 Edition 2 networks. This module allows engineers to unify substation automation and process control within a single controller, simplifying system architecture and reducing complexity.
What Is the ABB CI868A?
The CI868A is an expansion unit that connects an AC 800M controller to external Ethernet devices using the IEC 61850 standard. It mounts onto a TP868 Baseplate, which features two RJ45 Ethernet connectors. Channel 1 supports 10 Mbps or 100 Mbps transmission speeds. The baseplate includes a code lock to prevent incorrect module installation.
Inside the unit, the CI868A contains CEX-Bus logic, a communication unit, and a DC/DC converter. These components derive appropriate voltages from the +24 V supply via the CEX-Bus. The Ethernet cable must connect to the main network through an Ethernet switch.
Key Technical Specifications
- Communication Protocol: IEC 61850 Edition 2
- Supported Services: MMS (Client), GOOSE (Publisher & Subscriber)
- Transmission Speed: 10/100 Mbit/s
- Maximum IEDs: 120 IEDs for GOOSE, 40 IEDs for MMS (combined allowed)
- Maximum Modules per Controller: 12
- 24 V Consumption: Typical 160 mA
- Power Dissipation: 3.8 W
- Operating Temperature: +5 to +55 °C (+41 to +131 °F)
- Storage Temperature: -40 to +70 °C (-40 to +158 °F)
- Protection Class: IP20 (per EN60529, IEC 529)
- Dimensions: 59 mm width, 185 mm height, 127.5 mm depth
- Weight (including base): 700 g (1.5 lbs)
Industry Applications
The CI868A excels in substation automation environments where IEC 61850 is the standard. For example, a utility can use the module to connect intelligent electronic devices (IEDs) such as protective relays and meters to an AC 800M controller. This setup enables real-time monitoring and control of electrical assets alongside traditional process automation tasks.
In industrial facilities with on-site power generation, the CI868A allows engineers to manage electrical distribution and process control from a single platform. This reduces the need for separate controllers and simplifies maintenance.
Installation & Setup Guidance
Mount the CI868A onto a TP868 Baseplate. Ensure the baseplate's code lock matches the module type to prevent incorrect installation. Connect the Ethernet cable from channel 1 to an Ethernet switch that links to the main network. The module requires a +24 V supply via the CEX-Bus. Verify that the AC 800M controller runs System 800xA version 6.0.3.3, 6.1.1, or later.
Maintenance & Reliability
The CI868A supports hot swap, allowing replacement without powering down the system. Operate the module within its specified temperature range (+5 to +55 °C) and relative humidity (5 to 95%, non-condensing). The unit is rated IP20, so protect it from dust and moisture in industrial environments. Periodic inspection of the Ethernet connectors and baseplate contacts is recommended.
Compatibility & Integration
The CI868A works exclusively with ABB AC 800M controllers and requires System 800xA 6.0.3.3, 6.1.1, or later versions. It integrates with up to 12 modules per controller on the CEX bus. The module supports both MMS and GOOSE protocols, enabling communication with a wide range of IEC 61850-compliant IEDs. It can be used with HI (High Integrity) controllers for safety-related applications.
Selection Guide & Purchasing Advice
Before ordering, verify that your system meets the software requirements (System 800xA version). Confirm that the TP868 Baseplate is available for mounting. The CI868A is identified by article number 3BSE092691R1. For current lifecycle status and availability, contact SpareTechPLC, your trusted source for industrial automation parts.
Frequently Asked Questions
Q: Can the CI868A be used with older AC 800M controllers?
A: The module requires System 800xA 6.0.3.3, 6.1.1, or subsequent versions. Older controllers may not be compatible.
Q: How many IEDs can one CI868A support?
A: It supports up to 120 IEDs for GOOSE and up to 40 IEDs for MMS. Both protocols can be used simultaneously.
Q: Does the CI868A support network redundancy?
A: No, the module does not support network redundancy as per the provided specifications.
Q: What is the power consumption of the CI868A?
A: Typical 24 V consumption is 160 mA, with a power dissipation of 3.8 W.
Q: Can I replace the CI868A without shutting down the system?
A: Yes, the module supports hot swap, allowing replacement while the system remains powered.
