Product Overview
The Yokogawa AAI841-H works as an analog I/O module for Yokogawa distributed control systems. This unit converts field analog signals into digital data for controller processing. Consequently, plant engineers obtain accurate measurements from pressure, flow, and temperature transmitters.
Technical Specifications
| Parameter | Detail |
|---|---|
| Model | AAI841-H |
| Brand | Yokogawa |
| Category | Analog I/O Module |
| Compatible Systems | CENTUM VP, CENTUM CS 3000 |
| Input Channels | 8 analog inputs |
| Output Channels | 8 analog outputs |
| Input Signal Range | 4 to 20 mA DC, 1 to 5 V DC |
| Resolution | 16-bit |
| Accuracy | ±0.1% of span |
| Isolation | Channel-to-system isolation |
| Weight | Approximately 0.4 kg |
| Dimensions | 32.8 mm × 107.5 mm × 130 mm |
| Operating Voltage | 24 V DC nominal |
| Power Consumption | Approximately 5 W |
| Operating Temperature | 0°C to +50°C |
| Storage Temperature | -20°C to +70°C |
| Mounting Style | Rack-mounted card |
| Component Count | One module, one terminal block |
| Energy Storage | Not applicable (line-powered module) |
Design and Construction
This module occupies one slot in a standard I/O rack, which conserves cabinet space. Additionally, the front panel carries channel indicators, so technicians verify signal status quickly. The terminal block accepts shielded wiring, which reduces electrical noise. Moreover, the housing shields internal circuits from dust and vibration.
Compatibility and Installation
This card pairs with CENTUM VP controllers and Yokogawa I/O nests. During commissioning, engineers should match signal ranges, because mismatched settings cause scaling errors. Furthermore, the module supports hot-swap replacement in redundant configurations. The 24 V DC supply keeps cabinet wiring simple and consistent.
Key Benefits
Process plants value this module for its 16-bit resolution and channel isolation. As a result, it captures small signal changes while protecting controllers from ground loops. This model also handles both voltage and current signals for flexible wiring. Ultimately, its reliable performance reduces calibration effort and downtime.
Details
| Weight | 0.35 kg |
|---|---|
| Dimensions | 120 × 52 × 125 mm |
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