Technical Functional Overview
The AAV144-S50/A4S10 is a high-precision analog voltage input module for Yokogawa DCS platforms, including CENTUM VP and CS 3000 systems. It provides 16 channels of voltage signal acquisition, converting field analog voltages into digital control data for process monitoring and control logic.
The module features galvanic isolation between field inputs and system bus circuitry, helping prevent ground loop interference and protecting controller electronics from field-side electrical surges. This design ensures stable signal acquisition in harsh industrial environments.
Detailed Engineering Specifications
| Parameter | Specification |
|---|---|
| Module Type | Analog Voltage Input |
| Channel Capacity | 16 channels |
| Input Range | -10 V to +10 V DC (software configurable) |
| A/D Resolution | 16-bit |
| Accuracy | ±0.1% of full scale |
| Input Impedance | ≥ 1 MΩ |
| Isolation Rating | 1.5 kV AC |
| Data Refresh Cycle | 10 ms |
| Dimensions | 282 × 210 × 20 mm |
| Weight | 0.2 kg |
Industrial Applications
-
Process variable monitoring from analytical instruments
-
High-precision voltage signal acquisition
-
Redundant control system deployment for critical loops
-
Replacement of legacy FCS I/O modules in modernization projects
Technical FAQ
Can it accept 4–20 mA signals?
Yes, but only through external signal conditioning. A 250 Ω precision resistor can be used to convert 4–20 mA into 1–5 V DC voltage signals.
What does the /A4S10 suffix mean?
It indicates connector and wiring interface configuration for compatibility with Yokogawa terminal boards.
Is it hot-swappable?
Yes. When used in redundant FIO nests, the module can be replaced online if the standby module is in ready status.
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| Shipping Port | ShangHai, Xiamen |
| Warranty | 12 Months |
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