Description
Product Overview
The AO 3481S2 Analog Output Module from Triconex delivers fault-tolerant analog control for safety-critical environments. Built for Tricon Systems, this module features triple-redundant channels that independently process and validate output signals.
Each channel in the AO 3481S2 stores values in separate tables and communicates through the TriBus network. The module applies mid-value selection logic in TMR mode and averaging in duplex setups to ensure reliable analog output.
Its self-calibration system adjusts ADC gain and bias against reference voltages, maintaining ±0.1% accuracy. Engineers rely on the AO 3481S2 for precise control of reactor temperatures, pipeline pressures, and other sensitive parameters.
The module supports multiple signal types including 4–20mA loops, thermocouples (J/K/T/E), and 3-wire RTDs. It also handles voltage ranges from -5VDC to +10VDC, ensuring compatibility with legacy and modern transducers.
Technical Specifications
| Parameter |
Specification |
| Model Number |
AO 3481S2 |
| Manufacturer |
Triconex |
| Product Range |
Tricon Systems |
| Module Type |
Analog Output Module |
| System |
DCS |
| Architecture |
Triple-Modular Redundant (TMR) |
| Signal Types |
4–20mA, Thermocouples, RTDs, Voltage |
| Voltage Range |
-5VDC to +10VDC |
| Accuracy |
±0.1% with auto-calibration |
| Voting Logic |
Median (TMR), Averaging (Duplex) |
| Diagnostics |
Continuous calibration and fault detection |
| Certifications |
IEC 61508 SIL3, ATEX, cULus |
| Operating Temp. |
-40°C to 70°C |
| Dimensions |
3.2 × 26.5 × 35.8 cm |
| Weight |
1.82 kg |
| HS Code |
8537101190 |
| Communication |
Ethernet Router |
| Condition |
Brand New |
| Lead Time |
In Stock |
| Minimum Order |
1 Unit |
| Origin |
USA |
| Discontinued |
Active |
Applications & Compatibility
The AO 3481S2 integrates with Tricon controllers and supports:
-
Reactor temperature and pressure control
-
Safety Instrumented Systems (SIS)
-
Oil & gas, chemical, and power generation facilities
-
Universal analog output for legacy and modern field devices
