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CI820V1
CI820V1
CI820V1

ABB CI820V1 S800 Redundant Fieldbus Communication Interface

  • Model: CI820V1 (3BSE025255R1)
  • Brand: ABB
  • Series: S800 I/O
  • Core Function: Redundant fieldbus communication interface
  • Product Type: Redundant FCI
  • Key Specs: Advant Fieldbus 100 support, full redundant media
  • Condition: New Original / New Surplus
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Description

Key Technical Specifications

  • Fieldbus: Advant Fieldbus 100 with redundant media support
  • Redundancy: Full redundant FCI configuration
  • I/O Station Support: Manages S800 I/O modules in redundant setups
  • Power Supply: 24 V DC via backplane or external
  • Mounting: DIN-rail in S800 I/O station
  • Features: Redundant communication paths for high availability
  • Dimensions: Approx. 54 mm width (typical for series)
  • Weight: Approx. 0.5 kg
  • Application: High-integrity S800 I/O stations requiring redundancy

Product Introduction

The ABB CI820V1 (3BSE025255R1) is a redundant Fieldbus Communication Interface for S800 I/O stations on Advant Fieldbus 100. It provides dual communication paths to maintain operation if one link fails.

In redundant controller architectures, this module ensures continuous I/O data flow between the S800 station and the AC800M or Advant controller. It is a standard choice where downtime cannot be tolerated.

Troubleshooting Quick Reference

Symptom Possible Cause Relevance to this Part Quick Check Method Recommendation
Loss of one redundant link Cable or media fault ✅ High Check status LEDs for primary/secondary paths Inspect and replace faulty fieldbus cable
Both paths down Power or configuration issue ✅ High Verify power to both FCIs and bus diagnostics Check power supplies and node addressing
Switchover delay Redundancy not fully enabled ✅ Medium Review controller diagnostics for FCI status Confirm redundant pair configuration
No I/O data ModuleBus problem ✅ Medium Check local ModuleBus connections Reseat I/O modules and cables
Intermittent redundancy alarms Noise on fieldbus ❌ Low Monitor signal quality on both media Improve cable routing and shielding

Send FCI diagnostics logs and photos of LED status when requesting further help.

CI820V1
CI820V1
CI820V1
CI820V1

Frequently Asked Questions (FAQ)

What makes the CI820V1 different from a single CI801? The CI820V1 supports full redundancy with dual media paths on Advant Fieldbus 100 for higher availability in critical applications.

Can I hot swap one unit in a redundant pair? Yes, in a properly configured redundant setup you can replace one FCI while the other maintains communication. Follow the redundancy guidelines in the manual.

How many I/O modules can it support? Same as standard S800 FCIs — typically up to 24 modules per station, depending on power budget and ModuleBus limits.

Is this module compatible with AC800M controllers? Yes. It works with AC800M systems using Advant Fieldbus 100 for the I/O communication.

Why purchase New Surplus? Genuine new ABB stock units that have passed incoming inspection and functional testing on S800 racks. Immediate availability with test reports and 1-year warranty.

What cabling is required? Dual redundant Advant Fieldbus 100 cabling (media A and B). Use recommended ABB cables and proper termination for reliable operation.

Installation tip from the field? Photograph the existing redundant setup before work. Verify both power feeds and media paths are independent. Always use ESD protection and confirm firmware compatibility between the redundant pair.

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