Introduction
In the evolving landscape of industrial automation, the need for reliable and flexible communication interfaces has never been greater. The ABB CI920AN 3BDH000692R1 Communication Interface addresses this demand by providing a robust link between S900 I/O systems and higher-level control networks. Designed for installation in safe (non-hazardous) areas, this module enables efficient data exchange using the PROFIBUS DP-V1 protocol, reducing wiring costs and simplifying system architecture.
Technical Specifications Breakdown
The ABB CI920AN operates as a communication interface for the S900 I/O system, supporting PROFIBUS DP-V1 (IEC 61158). Key parameters include:
- Redundancy: Supports both power and communication redundancy, ensuring continuous operation even if one path fails.
- Hot Configuration in Run: Allows parameter changes without system shutdown, minimizing downtime.
- Hot Swap Functionality: Enables module replacement during operation, avoiding production interruptions.
- Environmental Resilience: With a G3 coating per ISA-S71.04, it withstands corrosive atmospheres. Operating temperature ranges from -20°C to 60°C, with relative humidity up to 93% at 40°C.
- Dimensions: Compact size (20 mm width, 104 mm depth, 104 mm height) and lightweight (0.13 kg) facilitate easy installation in space-constrained cabinets.
These specifications make the CI920AN a reliable choice for demanding industrial environments.
Industry Applications
Oil and Gas
In upstream and midstream operations, the CI920AN connects field-mounted S900 I/O to a distributed control system (DCS) via PROFIBUS DP-V1. Its redundancy and hot swap features ensure continuous monitoring of pressure, temperature, and flow, even during maintenance.
Chemical Processing
For batch reactors and continuous processes, the module’s HART over PROFIBUS capability allows simultaneous communication with smart field devices, providing both process values and diagnostic data. The G3 coating protects against corrosive vapors common in chemical plants.
Power Generation
In combined-cycle plants, the CI920AN integrates turbine and boiler I/O into the control network. Its electrical isolation between fieldbus and power reduces noise interference, improving signal integrity.
Installation & Setup Guidance
Mount the CI920AN on a standard DIN rail within an S900 I/O system. Ensure the module is in a safe (non-hazardous) area as it is not intrinsically safe. Connect the PROFIBUS DP cable to the designated port and configure the station address using the DTM software. For redundancy, pair two CI920AN modules with identical firmware versions (refer to Release Notes). Verify that the internal CAN bus coupling is properly terminated. No special tools are required for installation.
Maintenance & Reliability
The CI920AN is designed for minimal maintenance. Its auto-diagnostics simplify troubleshooting by reporting faults via PROFIBUS. Regularly inspect the module for dust accumulation and ensure ambient temperature stays within -20°C to 60°C. The G3 coating provides long-term protection against corrosion. Since the module supports hot swap, you can replace it without powering down the system, reducing unplanned downtime and maintenance costs.
Compatibility & Integration
The CI920AN seamlessly integrates with ABB S900 I/O systems and any PROFIBUS DP-V1 master. It supports HART over PROFIBUS, enabling access to HART device variables. The module uses FDT/DTM technology for configuration and diagnostics, making it compatible with standard engineering tools. For redundancy, use two CI920AN modules with the same firmware. The module also supports line or media redundancy via two coupling modules.
Selection Guide & Purchasing Advice
Before purchasing the ABB CI920AN, verify your system’s compatibility with PROFIBUS DP-V1 and ensure the S900 I/O system is configured for safe area use. Confirm that the firmware version matches any redundant partner module. SpareTechPLC offers genuine ABB CI920AN units with fast shipping and expert support. Contact our team to verify current lifecycle status and availability before ordering.
Frequently Asked Questions
Can the CI920AN be used in hazardous areas?
No, the CI920AN is designed for installation in safe (non-hazardous) areas only. For hazardous locations, use S900 I/O variants rated for Zone 1 or Zone 2.
Does the CI920AN support HART communication?
Yes, it supports HART over PROFIBUS DP-V1, allowing simultaneous analog and digital communication with HART field devices.
What is the maximum ambient temperature for operation?
The CI920AN operates reliably in ambient temperatures from -20°C to 60°C, with relative humidity up to 93% at 40°C.
How does redundancy work with the CI920AN?
Two CI920AN modules with identical firmware can be configured for redundancy. If one module fails, the other continues communication without interruption.
Is the CI920AN compliant with environmental standards?
Yes, it meets CE, RoHS (DIRECTIVE/2011/65/EU), and WEEE (DIRECTIVE/2012/19/EU) standards. It also features G3 coating for corrosive atmospheres per ISA-S71.04.
