Description
The Yokogawa AAI143-S00 is a 16-channel, galvanically isolated analog input module engineered for CENTUM CS 3000 and CENTUM VP Distributed Control Systems (DCS). It processes standard 4 to 20 mA DC current loops from field instrumentation while providing robust channel-to-channel isolation and standard non-HART signal conditioning infrastructure.
Technical Specifications (Model Suffix: -S00)
| Parameter | Value |
| Manufacturer | Yokogawa Electric Corporation |
| Product Type | Analog Input Module (Field Control Network / FIO) |
| Number of Channels | 16 channels, isolated |
| Input Signal Range | 4 to 20 mA DC |
| Allowable Input Current | 24 mA max |
| Input Resistance (Power ON) | 270 \Omega (at 20 mA) to 350 \Omega (at 4 mA) |
| Measurement Accuracy | \pm 16 \, \muA (temperature drift: \pm 16 \, \muA / 10 °C) |
| Data Update Period | 10 ms |
| Transmitter Power Supply | 19.0 V DC or higher (at 20 mA), 25.5 V DC or less (at 0 mA) (limit: 25 mA) |
| Withstanding Voltage | 1,500 V AC for 1 minute (between input and system logic) |
| Communication Support | Standard base type (Non-HART protocol variant) |
| Current Consumption | 230 mA max (5 V DC), 540 mA max (24 V DC) |
| Module Weight | 0.3 kg |
Supply Terms & Commercial Details
- Availability: Stock-dependent; standard inventory typically available for immediate dispatch or project staging.
- Lead Time: Stock items ship within 3 to 5 business days; project-scale quantities or alternate sourcing timelines vary by region.
- Warranty: 12-month standard replacement warranty covering functional hardware defects.
- Condition: New Surplus / Factory Original (verify exact packaging status upon inquiry).
- Pricing Note: Listed price is indicative, not final. Price subject to market conditions; contact us for a firm quote.
Engineering & Integration Guidance
When deploying the AAI143-S00 module within standard control network racks, take note of the following architectural constraints:
- Signal Type Distinction: Unlike the “-H” series variants, the -S00 suffix denotes the standard non-HART model. It is optimized for conventional analog control loops where digital HART overlay polling is not required or handled via separate safety barriers/multiplexers.
- Redundancy Options: The module supports dual-redundant node configurations when paired with compatible redundant adapter cables and base plates in CENTUM VP node units.
- Field Wiring Terminations: Field connections interface through dedicated pressure clamp terminal blocks, MIL connector cables, or KS1 dedicated cables depending on the node adapter layout.
- Verification: Always check local cabinet fusing and verify loop power requirements against the connected 2-wire or 4-wire transmitter specifications before powering on the marshalling panels.
Frequently Asked Questions
What is the primary difference between the AAI143-S00 and the AAI143-H50?
The “-S00” suffix designates the standard basic model without native HART communication pass-through support, whereas the “-H50” model incorporates built-in HART protocol routing capabilities for smart instrumentation.
Can the AAI143-S00 supply power to 2-wire field transmitters?
Yes. The module provides an internal transmitter power supply output (19.0 V DC minimum at 20 mA) capable of driving standard 2-wire loop transmitters directly on a per-channel basis.
Does this module require software configuration changes when swapping out a failed unit?
No special module-level programming is typically required for a direct hardware swap. The node processor automatically downloads the configuration parameters upon booting, provided the node address and slot positioning remain identical.
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