Technical Overview
The AAV141-S50 is a 16-channel analog input module for the Yokogawa CENTUM VP Distributed Control System (DCS). Designed for voltage signal acquisition (1–5 V DC) within the FIO (Field Input/Output) architecture, it provides high-speed scanning and precise measurement for non-critical process variables. The module supports high-density installations and centralized monitoring in industrial control cabinets.
Detailed Specifications
| Item | Specification |
|---|---|
| Module Type | Analog Input (Voltage) |
| Model Number | AAV141-S50 |
| Number of Channels | 16 channels, non-isolated between channels |
| Input Signal Range | 1–5 V DC |
| Input Resistance | ≥1 MΩ (Power-on) |
| Allowable Input Voltage | -0.5 to 15 V DC |
| Accuracy | ±0.1% of full scale |
| Data Refresh Cycle | 10 ms (Standard) |
| Power Consumption | 5 V DC, 450 mA (Internal) |
| Explosion Protection | None (Suffix 5: Safe zone/basic type) |
| Environmental Suffix | Standard (-S) |
| Physical Weight | 0.2 kg |
Application and Hardware Integration
-
Interfaces with 1–5 V DC field signals, often converted from 4–20 mA using external 250 Ω resistors
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Suitable for signals sharing a common power source, as channels are non-isolated
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Compact and lightweight (0.2 kg) for high-density I/O stacking within standard Yokogawa expansion nodes
-
Optimized for stable industrial environments monitoring non-critical process variables
Technical FAQ
Can the AAV141-S50 handle 4–20 mA signals directly?
-
No. Use a 250 Ω precision shunt resistor at the terminal block to convert 4–20 mA to 1–5 V DC.
What does "Non-isolated" mean for this module?
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Channels share a common internal ground. Isolation exists only between the field side and system bus, not between channels.
When should I choose the AAV141 over the AAI141?
-
Select the AAV141 for voltage-output transmitters or when using external current-to-voltage conversion at the marshaling panel, which simplifies maintenance and testing.
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