FOXBORO AD916AG – 16-Channel Analog Input DCS Module | I/A Series Platform
Engineering Background
The FOXBORO AD916AG is a high-density analog input module developed for Foxboro’s I/A Series Distributed Control System (DCS) — one of the most widely deployed process control platforms in the refining, petrochemical, and power generation industries. Designed to interface directly with field transmitters, the AD916AG delivers reliable, high-resolution signal acquisition in demanding continuous-process environments where uptime and measurement accuracy are non-negotiable.
Product Positioning
The AD916AG occupies the core signal acquisition layer of the I/A Series architecture. It is the preferred choice for engineers specifying analog input capacity in new DCS builds, system expansions, and like-for-like replacements of aging I/O infrastructure. Its compatibility with HART field devices makes it a strategic asset in plants transitioning toward digital field instrumentation without full system replacement.
Complete Technical Specifications
- Manufacturer: Foxboro (Schneider Electric)
- Part Number: AD916AG
- Module Type: Analog Input (AI)
- Platform: I/A Series DCS
- Number of Channels: 16 (single-ended) / 8 (differential)
- Input Signal Range: 4–20 mA (standard); 1–5 VDC configurable
- Resolution: 16-bit A/D conversion
- HART Protocol: Compatible (pass-through to host)
- Isolation: Channel-to-channel and channel-to-bus isolation
- Scan Rate: Configurable per application requirements
- Power Consumption: Per I/A Series FBM backplane specification
- Operating Temperature: 0°C to 60°C (32°F to 140°F)
- Humidity: 5% to 95% RH, non-condensing
- Mounting: I/A Series FBM enclosure / baseplate
- Weight: Approx. 460 g
- Certifications: CE, UL (per Foxboro I/A Series documentation)
- Firmware: Compatible with current I/A Series software releases
Proven Application Environments
- Oil & Gas Refining: Crude distillation unit temperature and pressure monitoring; feed-forward control loops requiring high-channel-density AI modules
- Petrochemical Plants: Reactor inlet/outlet measurement, heat exchanger monitoring, and multi-stream flow measurement
- Power Generation: Boiler drum level, steam header pressure, and turbine exhaust temperature acquisition
- Pulp & Paper: Digester pressure and temperature profiling across multiple measurement points
- Water & Wastewater Treatment: Multi-point pH, flow, and level monitoring in treatment trains
- Pharmaceutical Manufacturing: Validated process monitoring in GMP-compliant environments requiring audit-trail-capable DCS platforms
Engineering Advantages
- High Channel Density: 16 AI channels per module slot reduces cabinet footprint and wiring complexity versus lower-density alternatives
- HART Pass-Through: Enables remote device configuration and diagnostics without additional multiplexers or field visits
- 16-Bit Resolution: Delivers 0.0015% full-scale accuracy, meeting the precision requirements of custody transfer and regulatory reporting applications
- Hot-Swap Capable: Supports module replacement under power within the I/A Series architecture, minimizing process interruption during maintenance
- Backward Compatibility: Drop-in replacement for earlier AD916-series variants; no software reconfiguration required in most installations
- Proven Field Reliability: MTBF exceeding 200,000 hours in continuous-process service per Foxboro reliability data
System Architecture & Signal Flow
The AD916AG installs into the I/A Series Field Bus Module (FBM) enclosure and communicates with the I/A Series Nodebus via the FBM backplane. Signal flow is as follows:
- Field Level: 4–20 mA transmitters (pressure, temperature, flow, level) wired to the AD916AG terminal assembly
- Module Level: AD916AG performs A/D conversion, signal conditioning, and HART extraction
- Backplane Level: Converted digital values passed to the FBM processor over the internal backplane bus
- Control Network Level: FBM processor transmits process values to the I/A Series Nodebus for consumption by control processors (CP60, CP270, CP40B, etc.)
- Operator Level: Process values displayed and historized in FOXBORO SCADA / DCS operator stations
This architecture supports redundant FBM configurations for critical loops, with the AD916AG participating in active/standby switchover without signal interruption.
Sourcing & Quality Verification
- Source: Konmask.com sources AD916AG modules from decommissioned plant inventories, authorized distributors, and verified surplus channels — never from unvetted grey-market brokers
- Inspection Protocol: Each unit undergoes visual inspection (PCB, connectors, label integrity), functional power-on verification, and firmware version confirmation prior to shipment
- Authenticity: Foxboro part number, date code, and revision markings verified against OEM documentation
- Packaging: ESD-safe anti-static bags, foam-lined cartons, and humidity indicator cards for international shipments
- Warranty: 90-day replacement warranty against DOA or functional defects
- Traceability: Full sourcing documentation available upon request for regulated industries
Procurement Process
- Submit RFQ: Email support@konmask.com with your required quantity, delivery timeline, and any revision/firmware requirements
- Receive Quote: Pricing and availability confirmed within 1 business day
- Order Confirmation: Purchase order accepted via email; proforma invoice issued for international buyers
- Inspection & Dispatch: Unit inspected, documented, and dispatched within 2–3 business days
- Shipping: DHL / FedEx Express international; EXW Xiamen or CIF destination available
- After-Sales: Technical support available post-delivery for integration questions
Technical FAQ
Q: Is the AD916AG compatible with the I/A Series CP270 and CP60 control processors?
A: Yes. The AD916AG communicates via the standard I/A Series Nodebus protocol and is compatible with all current and legacy I/A Series control processors including CP270, CP60, CP40B, and CP10.
Q: Can the AD916AG be used in a redundant FBM configuration?
A: Yes. When installed in a redundant FBM pair, the AD916AG participates in active/standby switchover. Redundancy is managed at the FBM processor level; no special variant of the AI module is required.
Q: What is the difference between AD916AG and AD916AE?
A: The suffix letter denotes the hardware revision. The AG revision incorporates updated component specifications for improved long-term reliability. Both are functionally interchangeable in standard I/A Series installations; confirm with your site’s DCS engineer for revision-sensitive applications.
Q: Does the AD916AG support HART commands beyond pass-through?
A: HART communication is passed through to the I/A Series host, where HART Device Management software (e.g., Foxboro HART Multiplexer or AMS Device Manager integration) handles command execution. The module itself does not process HART commands independently.
Q: What is the lead time for the AD916AG?
A: In-stock units ship within 2–3 business days. For larger quantities or specific revision requirements, lead time is confirmed at RFQ stage — typically 5–10 business days.
Q: Do you provide a test report with the module?
A: Yes. A basic inspection and power-on test report is available upon request. Full functional test reports with signal accuracy verification are available for an additional fee.
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