Product Overview
The ABB CI873A is a dedicated AC 800M communication interface module engineered to link your control system to external Ethernet devices via the EtherNet/IP protocol. As a master module, the CI873A also supports DeviceNet, offering flexibility in mixed-protocol environments. Designed for demanding industrial applications, it provides reliable, high-speed communication with a transmission speed of 10/100 Mbit/s.
This module is part of ABB's 800xA ecosystem and works exclusively with System 800xA 6.0.3.3, 6.1.1, and subsequent versions. It supports up to six redundant pairs of CI873A modules from 5.1 FP4 onward, ensuring high availability for critical processes. The CI873A is a hot-swappable, module-redundant solution that minimizes downtime during maintenance or upgrades.
Technical Specifications
The table below outlines the core technical parameters for the ABB CI873A. These values are sourced directly from the manufacturer's documentation and are essential for system integration planning.
| Parameter |
Value |
| Article Number |
3BSE092695R1 |
| Communication Protocol |
EtherNet/IP / DeviceNet |
| Master or Slave |
Master |
| Transmission Speed |
10/100 Mbit/s |
| Line Redundancy |
No |
| Module Redundancy |
Yes |
| Hot Swap |
Yes |
| Used with HI Controller |
Yes |
| Max Units on CEX Bus |
12 |
| Connector |
RJ-45 female (8-pin) |
| 24 V Consumption (typ.) |
160 mA |
| Operating Temperature |
+5 to +55 °C (+41 to +131 °F) |
| Storage Temperature |
-40 to +70 °C (-40 to +158 °F) |
| Altitude |
2000 m (IEC/EN 61131-2) |
| Pollution Degree |
Degree 2 (IEC/EN 61131-2) |
| Corrosion Protection |
G3 compliant (ISA 71.04) |
| Relative Humidity |
5 to 95%, non-condensing |
| Protection Class |
IP20 (EN60529, IEC 529) |
| CE Marking |
Yes |
| Electrical Safety |
UL 61010-1, UL 61010-2-201 |
| Hazardous Location |
UL 60079-15, cULus Class 1, Zone 2, AEx nA IIC T4, ExnA IIC T4Gc X |
| Marine Certificates |
DNV-GL (Pending: ABS, BV, LR) |
| RoHS Compliance |
Directive 2011/65/EU (EN 50581:2012) |
| WEEE Compliance |
Directive 2012/19/EU |
| Width |
59 mm (2.3 in.) |
| Height |
185 mm (7.3 in.) |
| Depth |
127.5 mm (5.0 in.) |
| Weight (incl. base) |
700 g (1.5 lbs) |
Key Features & Benefits
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Dual Protocol Support: The CI873A supports both EtherNet/IP and DeviceNet, allowing integration with a wide range of industrial devices.
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Redundancy Ready: With support for up to six redundant pairs, the module ensures continuous operation even if one unit fails.
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Hot Swap Capability: Replace or add modules without shutting down the system, reducing downtime and maintenance costs.
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Compact & Robust Design: The module measures 59 mm x 185 mm x 127.5 mm and weighs only 700 g, fitting neatly into standard control cabinets.
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Environmental Hardiness: Operating range from +5 to +55 °C and storage from -40 to +70 °C, with IP20 protection for indoor use.
Industry Applications
The ABB CI873A is ideal for industries requiring reliable Ethernet-based communication between controllers and field devices. Typical applications include:
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Manufacturing Automation: Connecting PLCs and HMIs to EtherNet/IP networks for real-time data exchange.
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Process Control: Integrating DeviceNet sensors and actuators into an AC 800M system for precise process monitoring.
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Material Handling: Coordinating conveyor systems and robotic cells with redundant communication links to avoid production stoppages.
Installation & Setup Guidance
When installing the CI873A, ensure the TP867 baseplate is properly mounted in the cabinet. The module connects to the baseplate's CH1 RJ45 connector, which supports 100 Mbps. Only CH1 is used for communication; CH2 remains unused. Connect the CI873A to your Ethernet network using a shielded CAT5e or better cable. The module draws 160 mA from the +24 V supply, which is delivered through the CEX-Bus — verify that your power budget accommodates this. For redundant configurations, install the CI873A pairs in the designated slots and configure the redundancy settings in the control builder software. Always follow the system 800xA version compatibility requirements (6.0.3.3, 6.1.1 or later).
Maintenance & Reliability
Routine maintenance for the CI873A is minimal. Periodically inspect the RJ45 connectors for dust or corrosion, and ensure the module's ventilation is not obstructed. The module's hot-swap feature allows you to replace a faulty unit without halting production, which is a key cost-saving advantage. Given its rugged environmental ratings (G3 corrosion protection, IP20), the module is built to last in typical industrial settings. To maximize service life, keep the cabinet within the specified operating temperature range and relative humidity (5–95% non-condensing).
Compatibility & Integration
The CI873A is designed exclusively for ABB's AC 800M controller family and System 800xA. It integrates seamlessly with HI Controllers, as indicated by the 'Used together with HI Controller: Yes' specification. The module supports up to 12 units on the CEX bus, providing ample expansion capacity. With EtherNet/IP and DeviceNet support, you can connect to a variety of third-party devices, including drives, sensors, and remote I/O. For redundant setups, the CI873A supports up to six redundant pairs, ensuring high availability in critical applications.
Selection Guide & Purchasing Advice
Before purchasing the CI873A, verify that your system meets the software version requirements (System 800xA 6.0.3.3, 6.1.1 or later). Confirm the number of CEX bus units and redundant pairs you need to ensure the module fits your architecture. Also, check the power supply capacity for the 160 mA consumption. As a reliable partner for industrial automation spares, PLC Source PRO offers genuine ABB CI873A modules with full technical support. Ensure you order the correct article number 3BSE092695R1 to guarantee compatibility.