Product Overview
The ABB CI920AS is a communication interface module designed for the remote S900 I/O system. This Industrial Automation Module enables seamless communication between field devices and control systems using the PROFIBUS DP-V1 protocol (IEC 61158). Built for hazardous environments, the CI920AS supports installation in Zone 1, making it a reliable choice for demanding industrial applications.
Part of the S900 I/O family, the ABB CI920AS (Article Number 3BDH000690R1) offers robust performance with intrinsic safety, redundancy, and hot-swap capabilities. Its compact design—20 mm wide, 104 mm deep, and 104 mm high—allows for space-efficient installation directly in the field, reducing marshalling and wiring costs.
Key Features & Benefits
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ATEX Certification for installation in Zone 1 hazardous areas
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Redundancy for both power and communication to ensure system availability
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Hot Configuration in Run and Hot Swap functionality minimize downtime
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Extended Diagnostics with FDT/DTM support for easy configuration and monitoring
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G3-coating for all components offers protection against corrosive atmospheres
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HART over PROFIBUS DP-V1 enables smart field device integration
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Electrical isolation between fieldbus and power enhances safety
Technical Specifications
| Specification |
Value |
| Signal Type |
Communication Interface |
| HART |
Yes |
| Redundancy |
Yes |
| Intrinsic Safety |
Yes |
| Mechanics |
S900 |
| CE Mark |
Yes |
| Hazardous Location |
ATEX Zone 1 |
| Corrosive Atmosphere |
ISA-S71.04 G3 |
| Relative Humidity |
Max 93% ± 3% at 40°C |
| Max Ambient Temperature |
-20°C to 60°C |
| RoHS Compliance |
Directive 2011/65/EU (EN 50581:2012) |
| WEEE Compliance |
Directive 2012/19/EU |
| WEEE Category |
Small Equipment (≤50 cm) |
| Width |
20 mm (0.79 in.) |
| Depth |
104 mm (4.09 in.) |
| Height |
104 mm (4.09 in.) |
| Weight |
0.14 kg (0.31 lbs.) |
Industry Applications
The ABB CI920AS excels in industries requiring reliable communication in hazardous areas, such as oil and gas, chemical processing, and pharmaceutical manufacturing. Its intrinsic safety and ATEX Zone 1 certification allow direct installation in explosive atmospheres, connecting intrinsically safe field devices located in Zone 0, Zone 1, or Zone 2.
By enabling PROFIBUS DP-V1 communication, the module supports redundant line or media configurations, ensuring continuous operation even during maintenance. This capability is critical for processes where downtime translates into significant financial loss.
Installation & Setup Guidance
Install the ABB CI920AS directly in the field to reduce wiring complexity. The module supports hot-swap functionality, allowing replacement during operation without interrupting the primary voltage. When configuring redundancy, ensure both CI920AS modules use the same firmware version as specified in the Release Notes.
For optimal performance, maintain ambient temperatures within -20°C to 60°C and relative humidity below 93% at 40°C. Follow standard PROFIBUS DP-V1 wiring practices and verify proper grounding and shielding to minimize electromagnetic interference.
Maintenance & Reliability
The ABB CI920AS features auto-diagnostics and hot-swap capabilities, simplifying routine maintenance. The G3-coating protects components from corrosive environments, extending service life and reducing replacement frequency. Regular inspection of connectors and fieldbus wiring helps prevent communication faults.
With redundancy built in, the module ensures high availability, reducing unplanned downtime and associated costs—an attractive return on investment for critical processes.
Compatibility & Integration
The module uses PROFIBUS DP-V1 (IEC 61158) and couples the internal CAN bus to the external fieldbus. It supports HART over PROFIBUS, enabling integration with smart transmitters. Use two CI920AS modules for line or media redundancy.
Selection Guide & Purchasing Advice
Before purchasing, verify that your control system supports PROFIBUS DP-V1 and that the CI920AS firmware matches your existing modules. Confirm the article number (3BDH000690R1) and check environmental ratings for your installation area. For expert assistance and genuine parts, rely on PLC Source PRO.