The Triconex 3351S2 Analog Input Module is a high-performance safety I/O component designed for Safety Instrumented Systems (SIS) operating under Triple Modular Redundancy (TMR) architecture. It serves as a critical interface between field instrumentation—such as pressure transmitters, temperature sensors, and flow meters—and the Triconex safety controller.
Engineered for high-accuracy signal acquisition and fault-tolerant processing, the 3351S2 captures multiple analog inputs and converts them into reliable digital data for safety logic execution. Its continuous diagnostics, strong isolation, and SIL-rated design make it ideal for industries where precision and reliability are non-negotiable.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Type | Analog Input Module |
| Model | 3351S2 |
| System Compatibility | Triconex SIS (TMR Architecture) |
| Input Channels | 32 isolated analog inputs |
| Input Signal Type | 4–20 mA (supports 2–22 mA tolerance) |
| Resolution | 12-bit A/D conversion |
| Accuracy | ±0.15% of full scale |
| Scan Time | < 1 ms (all channels) |
| Isolation | ≥ 2500 V DC channel-to-bus |
| Power Supply | 24 V DC |
| Power Consumption | ≤ 4 W |
| Diagnostics | Open/short detection, channel health monitoring |
| Hot-Swap Support | Yes |
| Operating Temperature | –40 °C to +70 °C |
| Storage Temperature | –40 °C to +85 °C |
| Mounting | Rack / DIN rail compatible |
| Dimensions (H × W × D) | 45 × 188 × 217 mm |
| Weight | Approx. 1.2 – 1.3 kg |
Data such as 32 channels, 4–20 mA range, and high isolation are standard for this module class.
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