Description

The FOXBORO SRI986-CIDS7EAANA-C is a high-performance, intelligent analog input module engineered for the Emerson I/A Series Distributed Control System (DCS). Designed to interface directly with field instruments such as pressure transmitters, temperature sensors, and flow meters, this 8-channel module accurately digitizes standard 4–20 mA process signals while supporting full HART digital communication pass-through—enabling remote configuration, calibration, and diagnostics of smart field devices without disrupting the control loop. As part of the SRI986 Smart Remote I/O family, the SRI986-CIDS7EAANA-C delivers enterprise-grade reliability in demanding continuous-process environments.

Positioned within the I/A Series architecture, the SRI986-CIDS7EAANA-C connects via redundant fiber-optic or copper Fieldbus links to the system’s I/O processors, ensuring high availability and deterministic data transfer. Each channel features galvanic isolation (up to 1500 V), individual open-circuit detection, and configurable engineering units scaling, making it ideal for safety-critical applications in oil & gas, power generation, and chemical processing. The “C” suffix denotes compliance with global certifications including ATEX, IECEx, and CSA for use in hazardous areas. With its hot-swap capability and comprehensive self-diagnostics, the FOXBORO SRI986-CIDS7EAANA-C minimizes maintenance downtime while maximizing data integrity across the entire control lifecycle.

Technical Specifications

Main Features and Advantages

High-fidelity signal acquisition with HART intelligence: The SRI986-CIDS7EAANA-C doesn’t just digitize analog signals—it preserves the full digital layer of HART-enabled transmitters. This allows operators to perform remote zero/span adjustments, read device tags, monitor sensor health, and retrieve diagnostic alerts directly through the I/A Series operator station, reducing manual instrument rounds and improving predictive maintenance.

Robust channel-level diagnostics and safety: Each of the eight channels on the SRI986-CIDS7EAANA-C continuously monitors for wire break, short circuit, overrange, and under-range conditions. Faults are reported individually to the DCS with millisecond-level timestamping, enabling rapid troubleshooting without affecting other channels. The high-level galvanic isolation prevents ground loops and protects the controller from field-side transients—a critical feature in electrically noisy plants.

Seamless integration into I/A Series DCS: Designed as a native component of the I/A Series ecosystem (R100 and later), the SRI986-CIDS7EAANA-C requires no protocol converters or third-party drivers. Configuration is performed entirely within the Composer or Control Builder environment, with automatic tag synchronization and online parameter updates. Its redundant communication path ensures uninterrupted data flow even during network maintenance or single-link failure.

Hot-swap capability for zero-downtime maintenance: Unlike legacy I/O systems, the SRI986-CIDS7EAANA-C supports live replacement. Technicians can remove and install modules without powering down the I/O rack or halting the control application—essential for 24/7 operations in refineries or pharmaceutical plants. The module automatically reinitializes and resumes data transmission once reseated.

Global hazardous area compliance: The “-C” variant of the SRI986-CIDS7EAANA-C is certified for installation in Zone 1/Div 1 explosive atmospheres, meeting stringent international standards for intrinsic safety and equipment protection. This eliminates the need for external isolators or barriers in many applications, simplifying system design and reducing cabinet footprint.

Application Field

The FOXBORO SRI986-CIDS7EAANA-C is widely deployed in continuous and batch process industries where signal accuracy, system availability, and regulatory compliance are non-negotiable. In oil refineries and offshore platforms, it acquires critical pressure and differential pressure signals from custody transfer meters and safety shutdown systems, often forming part of SIL2-certified logic solvers. Within combined-cycle power plants, the SRI986-CIDS7EAANA-C monitors boiler drum level, turbine bearing temperature, and flue gas emissions—data essential for efficiency optimization and environmental reporting.

In chemical and petrochemical facilities, the module interfaces with corrosion-resistant transmitters in acid service or high-purity reactors, where signal drift could compromise product quality or trigger runaway reactions. Pharmaceutical manufacturers leverage its HART capabilities to maintain audit trails of instrument calibration during FDA inspections. Additionally, in water and wastewater treatment plants, the SRI986-CIDS7EAANA-C provides reliable monitoring of flow, turbidity, and chlorine residual across distributed pumping stations. Thanks to its rugged design and deep integration with the I/A Series platform, the SRI986-CIDS7EAANA-C remains a cornerstone of modern, secure, and maintainable process automation infrastructure.

Related Products

• SRI986-CODS7EAANA-C: 8-channel analog output module (complementary to input card)

• SRI986-CIDS7EAANA: Non-certified version (without hazardous area approvals)

• SRT986-1000: Base I/O chassis for SRI986 modules with dual power supply slots

• SRI986-DIDS1EAANA-C: Digital input module (16-channel, 24 VDC) in same series

• SRI986-DODS1EAANA-C: Digital output module for solenoid and relay control

• FIM986: Fieldbus Interface Module that connects SRI986 racks to I/A Series controllers

• I/A Series CP60: Controller processor compatible with SRI986 I/O subsystems

• SRI986-CIDS7FAANA-C: High-density 16-channel 4–20mA input variant (lower per-channel cost)

• SRI986-PSU1: Redundant power supply unit for SRT986 chassis

• Field Device Manager (FDM): Emerson software for centralized HART device management via SRI986-CIDS7EAANA-C

Installation and Maintenance

Pre-installation preparation: Before installing the SRI986-CIDS7EAANA-C, confirm that the SRT986 I/O chassis is powered by redundant PSUs and connected to the I/A Series controller via properly terminated Fieldbus cables (fiber or copper). Ensure the firmware revision of the FIM986 interface module supports the SRI986-CIDS7EAANA-C. Verify field wiring uses shielded twisted-pair cable, with shields grounded only at the chassis end to prevent ground loops. For HART communication, confirm that the transmitter impedance and loop resistance fall within HART specifications (typically ≤600 Ω total).

Maintenance recommendations: Regularly review channel diagnostic logs in the I/A Series historian to detect early signs of sensor degradation or wiring faults. During routine checks, inspect terminal blocks for corrosion or loosening, especially in high-humidity environments. If replacing a faulty SRI986-CIDS7EAANA-C, use the hot-swap procedure: disable the module in Composer, wait for the OK LED to turn off, then remove and insert the new unit—the system will auto-recover within seconds. Always store spare modules in ESD-safe packaging and avoid exposure to extreme temperatures or condensation.