Description
Product Introduction & Engineering Value
High-availability control systems are only as dependable as their communication infrastructure. The ABB CI820V1 is designed for applications where a single communication path is not acceptable, providing a redundant AF100 Field Communication Interface (FCI) for the S800 I/O platform.
Unlike a standard communication module, the CI820V1 operates as part of a redundant pair, allowing communication to continue if one interface becomes unavailable. It is commonly deployed in AC 800M, System 800xA, and Advant OCS installations where continuous operation is essential during process plant maintenance or hardware failures.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | ABB |
| Model | CI820V1 |
| Article Number | 3BSE025255R1 |
| Product Type | S800 Redundant Field Communication Interface (FCI) |
| Communication Protocol | AF100 (Advant Fieldbus 100) |
| Communication Speed | 1500 kbit/s (1.5 Mbit/s) |
| Redundancy | Dual FCI architecture |
| Compatible Systems | S800 I/O, System 800xA, Advant OCS, AC460 |
| Memory | 0.5 MB FPROM, 0.5 MB SRAM |
| Processor | 16 MHz |
| Product Weight | Approximately 0.6 kg |
| Software | Basic system software preloaded |
| Installation Requirement | Two CI820V1 modules are required to implement redundancy. |
Field Application & The “Trench” Experience
A combined-cycle power plant experienced sporadic communication interruptions between redundant controllers and distributed S800 I/O during periodic maintenance. Investigation showed the process controllers were functioning correctly, but one field communication interface had developed intermittent faults after years of continuous operation.
The maintenance team replaced the redundant CI820V1 pair during a scheduled outage. Because the AF100 network architecture already supported redundant communication, the plant resumed operation without modifying controller logic or I/O configuration. The replacement restored full communication redundancy and eliminated intermittent network alarms.
Typical applications include:
- Turbine control systems requiring redundant S800 I/O communication
- Continuous chemical production units with high-availability control systems
- Distributed boiler management systems using AF100 fieldbus
- AC460 controller installations with redundant field communication
- CI820V1
Transparency SOP: QA & Testing
Every undergoes a documented inspection and verification process before shipment.
- Confirm ABB article number 3BSE025255R1 and hardware revision.
- Inspect the AF100 communication interface and backplane connector.
- Verify PCB condition, connector integrity, and enclosure.
- Perform functional power-up testing using compatible S800 hardware where available.
- Check communication diagnostics and interface status indicators.
- Package the module in ESD-safe materials with shock-resistant protection.
Professionally refurbished modules receive additional communication testing before final approval.
The Veteran’s Tech Trap Guide
⚠️ One module is not enough.
The is intended for redundant operation. ABB specifies that two CI820 modules must be ordered to create a redundant communication pair. Purchasing only one module is a common procurement mistake.
⚠️ Don’t confuse CI810B with .
Although both communicate over AF100, the CI810B is a standard field communication interface, while the is specifically designed for redundant FCI applications.
PRO TIP:
Before replacing either module in a redundant pair, verify that both interfaces are operating with matching firmware and system software revisions. Mixed revisions can generate unexpected redundancy diagnostics even when both modules appear healthy.
⚠️ Remember the additional ordering requirement.
ABB documentation specifies that Item A070 must also be ordered with the in standard configurations. Confirm the complete bill of materials before scheduling installation.
Dynamic FAQ
Q1. What is the primary function of the ABB ?
The provides redundant fieldbus communication between the I/O system and ABB controllers, ensuring continued communication if one interface becomes unavailable.
Q2. How many modules are required for redundancy?
ABB specifies that are required to implement a redundant communication configuration.
Q3. Which ABB systems support the ?
The module is used with , System 800xA, Advant OCS, and selected AC460 controller installations utilizing the communication network.
Q4. Are New Surplus modules genuine ABB products?
Yes. New Surplus inventory consists of unused original ABB hardware stored under controlled warehouse conditions. Every unit is inspected for identity, connector condition, and physical integrity before shipment.
Q5. Can I replace a without changing the application program?
In most installations, yes. Since the module functions as the field communication interface, application logic typically remains unchanged. However, firmware compatibility and redundancy configuration should always be verified before commissioning.
Q6. Is warranty available?
Yes. Both New Surplus and professionally refurbished modules are available with warranty coverage. Warranty terms depend on the supplied condition and are confirmed with the quotation.
Start Chat
