The SRI986 positioner provides precise valve control in process automation systems:
Analog Control: Accepts 4-20mA signals from DCS controllers, PLCs, or other control systems
Pneumatic Output: Converts electrical signals to proportional pneumatic pressure for valve actuation
Feedback Options: Can be equipped with position feedback for closed-loop control applications
Fail-Safe Operation: Spring return action provides fail-safe valve positioning on signal or air loss
Wide Compatibility: Compatible with various valve types and actuator configurations
Both FOXBORO components serve critical roles across diverse industrial sectors where reliable process control and monitoring are essential:
FBM217: Monitoring pump status, valve positions, and safety system inputs in refineries and petrochemical plants.
SRI986: Controlling flow rates, pressure regulation, and emergency shutdown valves in critical process applications.
FBM217: Acquiring digital signals from reactors, mixers, and batch control systems with enhanced safety isolation.
SRI986: Precise control of chemical feed rates, temperature control valves, and process isolation valves.
FBM217: Monitoring turbine status, generator protection systems, and auxiliary equipment in power plants.
SRI986: Controlling steam valves, fuel gas regulation, and cooling water flow control systems.
FBM217: Clean room monitoring, batch process control, and equipment status indication with validated performance.
SRI986: Sterile process valve control, cleaning system automation, and precise dosing applications.
FBM217: Monitoring filter status, pump operations, and alarm conditions in water and wastewater treatment facilities.
SRI986: Chemical dosing control, flow regulation, and backwash valve automation in treatment processes.
FBM217: Production line monitoring, safety system inputs, and quality control equipment interface.
SRI986: Ingredient flow control, CIP system valves, and process isolation in food processing applications.
Mounting: Install in standard I/A Series card cage with proper ventilation and cable management
Wiring: Use shielded cables for field connections to minimize electromagnetic interference
Grounding: Ensure proper system grounding to maintain isolation effectiveness
Configuration: Set input filtering and fail-safe parameters appropriate for the application
Testing: Verify all input channels and communication before system commissioning
Documentation: Maintain accurate wiring diagrams and configuration records
Mounting: Secure mounting to valve actuator with proper alignment and mechanical connections
Pneumatic Connections: Use quality fittings and tubing, check for leaks after installation
Signal Wiring: Route 4-20mA signal cables separately from power cables to prevent interference
Calibration: Perform zero and span calibration according to valve travel requirements
Air Supply: Ensure clean, dry instrument air supply within specified pressure range
Environmental Protection: Verify IP65 sealing and cable gland integrity
Integration Tip: When using both components together in a FOXBORO I/A Series system, the FBM217 can monitor valve position feedback switches while the SRI986 provides precise analog position control, creating a comprehensive valve control and monitoring solution.
Regular diagnostic monitoring through I/A Series software
Periodic input channel verification and calibration checks
Visual inspection of connections and LED status indicators
Spare module availability for critical applications
Regular calibration verification and adjustment if needed
Air supply quality monitoring and filter replacement
Mechanical inspection of linkages and mounting hardware
Signal accuracy verification and troubleshooting procedures
Use I/A Series diagnostic tools for comprehensive system health monitoring
Monitor communication status and field device health
Trend analysis for predictive maintenance planning
Alarm management and root cause analysis capabilities