Description
Product Description
The TRICONEX 3351 is a 32-point analog input module designed for Trident safety instrumented systems. It receives 4–20 mA DC signals from field transmitters and converts them into process data for safety and control applications. Three independent input channels process the signals, supporting fault detection and the system’s fault-tolerant architecture. The module supports continuous channel diagnostics and hot-spare operation when configured in a compatible system. It can be used with compatible baseplates such as Models 2351, 2352, 2354, and 2354A, subject to the application and termination requirements.
TRICONEX 3351
Product Parameters and Datasheet
| Parameter | Details |
| Brand | TRICONEX |
| Model | 3351 |
| Series | Trident Safety Instrumented System |
| Product Name | Analog Input Module |
| I/O Type | Analog Input (AI) |
| Input Points | 32, commoned |
| Nominal Input Signal | 4–20 mA DC |
| Operational Input Range | 2–22 mA DC |
| Maximum Field Voltage | 33 V DC |
| Maximum Reverse Field Voltage | -0.6 V DC |
| Maximum Input Current | 50 mA DC |
| Resolution | 12 bits |
| Input Bandwidth | 16 Hz (-3 dB) |
| Absolute Error | 0.15% of full scale at 20 mA |
| Scan Time | Less than 1 ms for all 32 points |
| Diagnostics | Force-to-value diagnostics; independent channel monitoring |
| Architecture | Three-channel fault-tolerant processing |
| Compatible Baseplates | 2351, 2352, 2354, 2354A; verify configuration |
| Power Requirements | Field power nominally 24 V DC; verify baseplate and system requirements |
| Dimensions | Verify against the applicable product drawing |
| Weight | Approx. 1.5 kg; confirm shipment configuration |
| Place of Manufacture | Not confirmed; check product label |
| Country of Origin | Not confirmed; check product label |
| Product Status | Confirm actual condition before purchase |
| Discontinued | Legacy product; confirm current lifecycle status |
Recommended Related TRICONEX Models
1. 2351 — Analog input baseplate for typical 4–20 mA applications.
2. 2352 — Analog input external-termination baseplate.
3. 2354 — HART analog input baseplate configuration.
4. 2354A — HART analog input baseplate for hazardous-location applications.
5. 3361 — Analog input/digital input module.
6. 2361 — Analog input/digital input baseplate.
7. 3481 — Analog output module.
8. 2481 — Analog output baseplate.
9. 3482 — High-current analog output module.
10. 2483 — HART analog output baseplate.
11. 3301 — 32-point digital input module.
12. 2301 — Digital input baseplate.
13. 3401 — Digital output module.
14. 2401 — Digital output baseplate.
15. 3101 — Trident main processor module.
Compatibility Note
Confirm the exact Trident system generation, baseplate model, field-wiring arrangement, and firmware configuration before installation. Model 3351 is a 4–20 mA analog input module; it is not a thermocouple/RTD-only module or an analog output module.
