Description

Key Highlights
Manufacturer: ABB
Model Number: CI820V1 3BSE025255R1
Product Type: Redundant Fieldbus Communication Interface
Availability: In Stock
Condition: Original New
Country of Origin: Switzerland

Technical Specifications

The ABB CI820V1 (Part Number: 3BSE025255R1) is a redundant S800 Fieldbus Communication Interface (FCI) module. It functions as a communication link between the Advant Fieldbus 100 (AF100) network and the S800 I/O modules within ABB’s distributed control systems (DCS).

Manufacturer	ABB
Protocol Type:	Advant Fieldbus 100 (AF100).
Communication Speed:	1500 kbit/s.
Channels:	1 channel.
Power Supply Requirement:	24 VDC
Power Consumption	Typical 2.2 W
Current Draw	Max. 800 mA
Isolation Voltage	500 V AC
Operating Temperature	-25°C to +70°C
Storage Temperature	-40°C to +85°C
Relative Humidity	5% to 95% (non-condensing)

Troubleshooting & Commissioning Checklist

Module Bus & Hardware: Ensure the module is properly seated on the Module Termination Unit (MTU). The optical ModuleBus terminator (e.g., TB807) must be placed at the end of the cluster.
AF100 Network: Verify the twisted-pair AF100 bus cables are connected properly, keeping cables far away from high-voltage or power lines to avoid interference.
Redundancy Setup: If using a 1+1 redundant FCI setup, ensure both CI820V1 modules are correctly configured, and station addresses match the engineering layout.

Grounding and Shielding

The Single-Ground Rule: Connect the cable shield to the ground terminal only at the MTU side. Grounding both ends creates ground loops that destroy millivolt accuracy.
Module Termination Unit (MTU) Grounding: Ensure the MTU (where the CI820V1 is mounted) is securely bonded to the DIN rail. The DIN rail itself must be connected to the cabinet's main protective earth (PE) grounding bar using a low-impedance copper braid.
Shielding: Always use braided, foil-shielded twisted-pair cables for communication lines (like AF100 or PROFIBUS).Shield Terminals: Do not terminate shields directly to the CI820V1 ground. Use dedicated shield connection clamps to bond the cable shield directly to a grounded shield busbar at the cabinet entry point.

Technical FAQ

Q:Does the CI820V1 support module hot-swapping?
A:Yes, S800 I/O modules connected to the CI820V1 support Hot Configuration In Run, meaning you can exchange and reconfigure I/O modules during operation without shutting down the system.

Q:What happens to I/O during communication loss?
A:The CI820V1 features OSP (Output Set as Predetermined) handling and configuration. If communication is lost, it will drive the outputs to a safe, predetermined state to protect the process.

Q:Can the CI820V1 be used in redundant configurations?
A:Yes, it is designed specifically as a redundant FCI module, which allows you to set up dual AF 100 network lines and dual communication interfaces to ensure high availability and fault tolerance in critical process environments.

Q:What is the primary function of the CI820V1?
A:It functions as a redundant link bridge between the local S800 I/O ModuleBus extension and the overarching AF100 fieldbus network. It manages I/O data scanning, passes signals upstream to controllers, and delivers diagnostic statuses.

Q: Do you supply brand-new, original parts or second-hand refurbished items?
A: Our stock consists of Original New items; all products undergo quality inspection to ensure they are fully functional.

Q: What guarantees are included with the shipment?
A: All items in stock are tested by engineers, packed in professional ESD packaging, and shipped via express logistics with a global delivery time of 24–48 hours.

Q: How long does global shipping take?
A: Stock items are typically dispatched within 24 hours. Shipments are sent via DHL or FedEx Express, taking approximately 3–5 days to reach Asia, 4–6 days to Europe and the Middle East, and usually arriving within a week in major industrial regions worldwide.

Q: If the model I need is not listed on the website, can I request a quote?
A: Yes. We hold over 200,000 SKUs of industrial spare parts in stock, and many long-tail models are not listed in full. You can send us an RFQ (Request for Quote) directly, and we will provide wholesale pricing promptly.

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