Comprehensive technical guide to two essential FOXBORO components: the FBM217 RH916XZ Discrete Input Interface Module and the SRI986-BIDS7ZZZNA Electro-Pneumatic Positioner. These components are integral parts of FOXBORO's I/A Series distributed control systems, providing reliable field interface and valve control solutions for demanding industrial environments.
Discrete Input Interface Module
Function: 32-channel group isolated digital input module for I/A Series DCS
Input Type: Discrete voltage monitoring with galvanic isolation
Communication: 2 Mbps redundant Fieldbus communication
Application: Digital signal acquisition from field devices, switches, and sensors
Key Feature: Group isolation provides enhanced noise immunity and system protection
Electro-Pneumatic Positioner
Function: Precise valve positioning with 4-20mA control signal
Action Type: Single-acting pneumatic operation
Signal Input: 4-20mA analog input with high accuracy
Application: Control valve positioning in process automation systems
Key Feature: Robust design for harsh industrial environments with M20x1.5 cable entry
The FBM217 is a critical component in FOXBORO's I/A Series distributed control system, providing reliable interface between field digital devices and the control system. This module ensures accurate signal acquisition with excellent noise immunity through its group isolation design.
| Parameter | Specification | Details |
|---|---|---|
| Input Channels | 32 discrete inputs | Group isolated digital inputs |
| Input Voltage Range | 24V DC +5%, -10% | Standard industrial voltage level |
| Isolation | Group isolated | Enhanced noise immunity and safety |
| Communication | 2 Mbps Fieldbus | Redundant communication capability |
| Dimensions | 10.2 x 4.5 x 10.4 cm | Standard I/A Series form factor |
| Operating Temperature | -40°C to +70°C | Extended industrial temperature range |
| Environmental Rating | Class G3 | Harsh industrial environment capability |
| Part Number | P0914TR | Standard FOXBORO part identification |
Provides electrical isolation between field circuits and control system, enhancing safety and reducing electromagnetic interference.
High-density input capability reduces system footprint and wiring complexity while maintaining reliable signal acquisition.
Dual Fieldbus communication ensures continuous operation even if one communication path fails, maximizing system availability.
Supports discrete input, ladder logic, pulse counting, and sequence of events with configurable input filtering and fail-safe options.
The SRI986 series electro-pneumatic positioner provides precise valve position control in process automation applications. This single-acting positioner converts 4-20mA control signals into pneumatic output for accurate valve positioning with excellent repeatability and stability.
| Parameter | Specification | Details |
|---|---|---|
| Input Signal | 4-20mA | Standard industrial analog input |
| Action Type | Single Acting | Spring return pneumatic operation |
| Supply Pressure | 1.4 - 7 bar (20-100 psi) | Standard pneumatic supply range |
| Output Pressure | 0.2 - 6 bar (3-87 psi) | Proportional to input signal |
| Accuracy | ±0.5% of span | High precision positioning |
| Repeatability | ±0.2% of span | Excellent position consistency |
| Cable Entry | M20x1.5 | With plastic cable gland (gray) |
| Operating Temperature | -20°C to +80°C | Industrial temperature range |
| Enclosure Rating | IP65 | Weather and dust protection |
Regular performance benchmarking against design specifications
Environmental condition monitoring and adjustment procedures
Preventive maintenance scheduling based on operating conditions
Documentation of all maintenance activities and performance trends
Safety Notice: Always follow proper lockout/tagout procedures when performing maintenance on FOXBORO components. Both the FBM217 and SRI986 may be connected to critical safety systems that require special precautions during maintenance activities.
FOXBORO (now part of Schneider Electric) provides comprehensive support for both components through their global service network:
Complete technical manuals, installation guides, configuration software, and troubleshooting procedures are available through Schneider Electric's technical documentation portal, ensuring proper installation and maintenance.
Comprehensive training courses covering I/A Series system operation, maintenance procedures, and advanced troubleshooting techniques help ensure optimal system performance and reliability.
Schneider Electric's worldwide service organization provides 24/7 technical support, field service, and spare parts availability to minimize downtime and maintain system performance.
Migration paths and upgrade services are available for aging I/A Series installations, providing a bridge to modern DCS technologies while preserving existing investments.