Description
- Model: CI867K01 (Reference P/N: 3BSE043660R1)
- Brand: ABB (Sweden)
- Series: System 800xA / AC 800M Controller
- Core Function: Ethernet-based Modbus TCP communication interface.
- Product Type: Communication Interface Kit (includes CI867 module and Base)
- Key Specs: Dual Ethernet Ports | Modbus TCP Protocol | 10/100 Mbps
- Protocol: Modbus TCP (Ethernet)
- Transmission Speed: 10/100 Mbit/s (Full/Half Duplex)
- Number of Ports: 2 (Ch1 and Ch2)
- Connector Type: RJ45 (Shielded)
- Power Supply: 24 V DC (Internal via CEX-Bus)
- Current Consumption: Typ. 160 mA (+24 V)
- Redundancy: Supports network redundancy (Dual ports)
- Mounting: Horizontal or Vertical on CEX-Bus (AC 800M)
- Isolation: Galvanic isolation between Ethernet and logic
- Operating Temp: +5 to +55 °C
ABB CI867K01 3BSE043660R1
Application Scenarios & Pain Points
The is a vital link in the ABB 800xA architecture, allowing the AC 800M controller to talk to third-party devices such as power meters, motor drives (VFDs), and remote PLCs over Modbus TCP. Because it sits on the CEX-Bus (Communication Expansion Bus), it handles the heavy lifting of protocol translation without taxing the main CPU. A failure in this module doesn’t just lose a single sensor; it typically severs the entire link to a substation or a group of drives, resulting in a “Communication Lost” state for multiple critical assets.
Typical Application Scenarios:
- VFD & Motor Integration Controlling large ACS series drives from an AC 800M controller, managing speed and torque setpoints via Ethernet.
- Power Management Systems Collecting real-time electrical data (Current, Voltage, Harmonic) from Modbus-enabled meters to the 800xA HMI.
- Third-Party PLC Bridge Acting as a gateway between an ABB 800xA core and secondary systems like Siemens S7 or Schneider PLCs.
Engineering Case Study: The “Cyclic” Timeout
Background: A paper mill using an AC 800M controller was experiencing periodic “Device Timeout” errors on their Modbus TCP link. The link would drop for 2 seconds every 10 minutes, causing the paper machines to enter a “Safe State.”
The Problem: The engineer suspected the network switch, but the logs in Control Builder M pointed to the 3BSE043660R1 module. The internal buffers were overflowing due to an excessive number of “Master” requests being sent to the CI867.
The Solution: We provided a replacement CI867K01 to ensure the hardware wasn’t the bottleneck. During the swap, we assisted the technician in checking the firmware version.
Result: By swapping to the fresh module and optimizing the “Polling Interval” in the software, the Mill restored 100% uptime. The CI867K01’s ability to handle high-speed Ethernet traffic was restored to factory specifications.
ABB CI867K01 3BSE043660R1
ABB CI867K01 3BSE043660R1
Troubleshooting Quick Reference
Engineer’s Pro-Tip: “When you’re installing a CI867K01, the most common mistake is not seating the module firmly onto the TP867 baseplate. Because the CEX-Bus is a high-speed backplane, even a slight misalignment can cause the whole controller rack to fault out. Also, remember that the CI867 supports Redundancy—if your process is critical, use both Ethernet ports on separate switches. If you’re replacing a module in an existing rack, make sure to check the ‘Module ID’ settings in your software before you pull the old one!”
I have the technical manual for the AC 800M CEX-Bus configuration ready—let me know if you need the specific Modbus register mapping for your devices.
