Description
Product Overview
The Yokogawa AAI143-H50-S1 is a 16-channel galvanically isolated analog input module for the Yokogawa CENTUM VP FIO (Field I/O) DCS system. This HART-enabled module receives 4–20mA analog signals from 2-wire and 4-wire HART smart transmitters used to measure pressure, temperature, flow, liquid level and other process variables. It converts analog field signals into digital data and transmits them to the CENTUM VP control station. Each channel has independent galvanic isolation to minimize crosstalk and electromagnetic interference in noisy industrial environments. The suffix H50-S1 indicates HART 7 capability plus ISA G3 conformal coating for corrosive plant environments. The module supports hot swapping and comprehensive per-channel diagnostics including open circuit detection and over-range alarms. It is widely stocked as a drop-in spare I/O module for refineries, petrochemical, chemical, power and pulp & paper plants.
Technical Specifications
| Parameter | Details |
|---|---|
| Part Number | AAI143-H50-S1 |
| Manufacturer | Yokogawa Electric Corporation (Japan) |
| Product Category | HART Analog Input Module |
| DCS Platform | CENTUM VP FIO (Field I/O) |
| Channel Count | 16 fully isolated channels |
| Input Signal | 4–20 mA DC, HART 7 compatible |
| Input Resistance | 250 Ω |
| Span Accuracy | ±0.1% of full span |
| Max Allowable Input Current | 24 mA |
| Dielectric Withstand Voltage | 1500 VAC between field input and system side |
| Module Power | 24 VDC, consumption ≤300mA |
| Sampling Rate | 10 samples per second per channel |
| HART Protocol | HART 7 pass-through for instrument setup and diagnostics |
| Diagnostics | Open circuit detection, over-range alarm, module self-diagnostics |
| Environmental Rating | ISA G3, PCB conformal coating |
| Feature | Hot-swappable |
| Connector | 40-pin MIL connector for FIO terminal block |
| Operating Temperature | -20°C ~ +70°C |
| Storage Temperature | -40°C ~ +85°C |
| Relative Humidity | 5% ~ 95% non-condensing |
| Approximate Weight | 0.28 kg |
Compliance & Certifications
- CE mark compliant with EMC and Low Voltage Directive
- IEC 61508 functional safety compliant
- RoHS compliant
- Full factory functional test and calibration before shipment
Storage & Installation Guidelines
Storage Requirements
- Store in dry temperature-controlled warehouse; recommended ambient 10°C ~30°C, RH <70% non-condensing
- Keep sealed inside original anti-static packaging until ready for installation
- Protect against mechanical shock, continuous vibration, dust and corrosive vapors
- ESD wristband required for unpacking and PCB handling
Installation Instructions
- Follow site lock-out/tag-out procedures for instrument loops; hot swap function is supported
- Wear ESD protective gear to avoid electrostatic damage to circuit boards
- Align module with FIO backplane slot and insert firmly until latched
- Connect 40-pin MIL cable between AAI143-H50-S1 and matching FIO terminal board
- Terminate 4–20mA HART transmitter wiring following Yokogawa wiring schematics
- Check loop resistance and wiring continuity for each analog channel
- Configure I/O tags and ranges in CENTUM VP engineering station and enable HART communication
- Run module diagnostics and verify live process values plus HART instrument asset data
- Commissioning must be performed by certified Yokogawa DCS technicians
FAQ
Q: What DCS platform uses AAI143-H50-S1? A: It belongs to Yokogawa CENTUM VP FIO (Field I/O) DCS for continuous process control.
Q: What does H50-S1 suffix mean? A: H50 = HART 7 communication support; S1 = hardware revision with ISA G3 conformal coating for corrosive environments.
Q: Are input channels individually isolated? A: Yes, each of the 16 channels has independent galvanic isolation to reduce signal noise and cross-talk.
Q: Does this module support HART? A: Yes, HART 7 pass-through allows remote configuration, diagnostics and asset management of HART field transmitters.
Q: Can the module be hot swapped? A: Yes, hot swap is supported without powering down the entire DCS rack.
Q: What warranty is available? A: Standard 12-month warranty applies for fully tested modules operated under rated normal operating service conditions.
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