ABB 3BDH000692R1 CI920AN Advant 800xA Communication Interface

Core Technical Advantages

Seamless HART Field Device Pass-Through

The CI920AN natively supports HART protocol bridging over the PROFIBUS DP network configuration. This allows maintenance engineering teams to perform asset management operations, calibrate remote transmitters, change process parameters, and view advanced health metrics directly from the central control room without running dedicated secondary instrumentation wires.

Advanced System and Network Redundancy

To maximize uptime in critical continuous-process environments, the CI920AN supports full master/slave line redundancy. If a primary master module failure or a network cable break is detected, the redundant standby configuration takes over the communication bus instantaneously, ensuring zero data drops or unexpected automated plant shutdowns.

Rugged S900 Modular Architecture

Part of the rugged S900 system platform, the CI920AN features an extremely small physical footprint (20mm thickness), optimizing DIN rail real estate inside control marshaling panels. Its energy-efficient internal circuitry generates minimal thermal load, contributing to its broad ambient operating spectrum and long-term lifespan.

Technical Specifications

Installation and Maintenance

S900 Slot Mounting and Hot-Swap Guidelines

The CI920AN is engineered to snap directly into the designated communication slots on an S900 terminal unit or backplane chassis. To install, align the rear connector pin layout with the sub-rack guide tracking channels and press firmly until the locking tabs snap into place. The module supports live-insertion/hot-swapping configurations, allowing maintenance teams to change components without interrupting power to the remaining active I/O rack segments.

Redundant Bus Line Termination and Configuration

When implementing redundant topologies, install dual CI920AN modules into the corresponding primary and secondary sub-rack slots. Ensure the interconnecting PROFIBUS DP cables are terminated using high-quality network plugs with integrated terminating resistors active on both ends of the segment to avoid signal reflections and data communication corruption.

Climatic Control and Environmental Preservation

The module is certified to perform across a broad temperature scale (-20°C to 60°C) and withstand non-condensing relative humidity levels up to 93% (±3% at 40°C). For outdoor marshaling applications or environments high in ambient particulate count, house the S900 system sub-rack assembly within a sealed, climate-controlled cabinet matching IP65 or NEMA 4 standards.

Engineering Advantages

Direct System 800xA Optimization

By routing field information through standard PROFIBUS DP layers, the CI920AN offers smooth integration with ABB’s core asset optimization software utilities. This integration maps process inputs, diagnostic registers, and status alerts directly into the operator workstation environment without requiring complex ladder logic rewriting.

Reduced Engineering and Wiring Overhead

Combining many analog and digital I/O clusters onto a single serial communication line reduces the total volume of field cables running back to the main control station. This distributed I/O framework simplifies project engineering, lowers installation costs, and reduces the time required for system commissioning.

Comprehensive Compliance Standards

Complying with strict European CE mandates, RoHS Directive 2011/65/EU, and falling into the WEEE Small Equipment category (external dimensions ≤ 50cm), this module meets environmental and electronic safety standards required for global infrastructure, power generation, and manufacturing applications.

Technical FAQs

Q1: Can the CI920AN 3BDH000692R1 be installed directly in ATEX Zone 1 hazardous explosive zones?
A1: No. While the S900 family contains modules specifically engineered for intrinsically safe field areas, the CI920AN (Model Code ending with 'N') is classified as a non-intrinsically safe interface module. It should be mounted inside a safe area or within a flame-proof / purged enclosure when used in hazardous industrial settings.

Q2: How does the CI920AN handle a sudden failure of the primary PROFIBUS line?
A2: When deployed in a redundant configuration with a secondary backup module, both units monitor network status in real time. If the active communication channel fails or experiences a broken cable, the internal firmware switches to the redundant link within milliseconds, ensuring uninterrupted control loop data tracking.

Q3: Does this module require specialized software toolsets for initial node address assignment?
A3: Initial node station addresses can typically be configured using standard hardware configuration switches located on the module/backplane housing, or established via PROFIBUS network master configuration software utilities during system integration.