Description

The TRICONEX 3008N represents a high-performance 16-Channel Analog Input Module within the Tricon v9, v10, and v11 safety instrumented systems (SIS). This advanced module is engineered to acquire and condition a wide variety of analog signals from field instruments, serving as a critical data gateway for the Triple Modular Redundant (TMR) safety controller. The primary function of the TRICONEX 3008N is to accurately digitize continuous process variables—including pressure, temperature, level, and flow—enabling the main processors to execute complex safety logic and make informed decisions regarding process shutdowns. Its design emphasizes exceptional measurement accuracy, signal integrity, and operational resilience in the most challenging industrial environments.

Building upon the proven TMR architecture, the TRICONEX 3008N incorporates three independent signal processing paths for each of its 16 channels. Each field input is simultaneously sampled and converted by three isolated circuits, and the results are subjected to a sophisticated voting algorithm before a single, validated data point is communicated to the main processors. This robust design ensures that any discrepancy or fault within one path is instantly identified and masked, preventing the propagation of erroneous data that could compromise the safety function. The TRICONEX 3008N is designed for high availability, featuring hot-swappability that allows for module replacement during ongoing system operation, thereby maximizing plant uptime and ensuring continuous protection.

TRICONEX 3008N

Technical Specifications

Parameter Name	Parameter Value
Product Model	3008N
Manufacturer	TRICONEX (a brand of Schneider Electric)
Product Type	16-Channel Analog Input Module
Number of Channels	16
Input Signal Types	4-20 mA, 0-5 VDC, 0-10 VDC, ±5 VDC, ±10 VDC, Thermocouple (Types J, K, T, E, R, S, B, N, C), RTD (Pt100, Pt200, Pt500, Pt1000, Ni120, Cu10), Resistance (0-400Ω), Potentiometer (0-1kΩ)
Resolution	16 bits
Accuracy	±0.05% of reading (for voltage/current inputs)
Common-Mode Rejection	>140 dB @ 50/60 Hz
Normal-Mode Rejection	>80 dB @ 50/60 Hz
Input Impedance	>10 MOhm (Voltage inputs)
Update Rate	125 ms per channel (all 16 channels)
Backplane Communication	Tricon High-Speed Bus (TRIBUS)
Isolation	Channel-to-Channel and Channel-to-Bus Isolation, 1500 Vrms
Diagnostics	Continuous online diagnostics for open circuit, short circuit, over-range, under-range, and module health
Certifications	TÜV Rheinland certified for use in SIL 3 applications per IEC 61508

Main Features and Advantages

The TRICONEX 3008N sets a benchmark for versatility and precision in safety system analog acquisition. Its most significant advantage is the extraordinary range of supported signal types, which can be individually configured per channel through software. This unparalleled flexibility allows a single 3008N module to interface directly with virtually any industry-standard analog sensor—from 4-20 mA transmitters and thermocouples to RTDs and potentiometers—eliminating the need for external signal conditioners and significantly reducing system complexity, cabinet space, and total installation cost.

Advanced Signal Processing and Noise Immunity: The module incorporates state-of-the-art signal processing capabilities, including programmable filtering, linearization for non-linear inputs like thermocouples, and engineering unit conversion. Its exceptional common-mode and normal-mode rejection ratios ensure measurement accuracy is maintained even in environments with severe electrical noise, such as those found near large motor control centers or high-frequency equipment. This makes the 3008N exceptionally reliable for capturing subtle process changes that might indicate developing hazardous conditions.

Enhanced Diagnostic Capabilities and TMR Reliability: The TRICONEX 3008N features comprehensive, continuous self-diagnostics that monitor for field wiring faults (opens, shorts), signal degradation, and internal module health. These diagnostics provide the necessary coverage to achieve and maintain SIL 3 integrity. The triple redundant design of each input channel ensures continuous system operation even after a failure in one signal path. Coupled with its hot-swappable design, this guarantees maximum system availability and allows for swift maintenance without a process shutdown.

Application Field

The TRICONEX 3008N is deployed in the most critical process safety applications across multiple industries where highly reliable and precise analog monitoring is non-negotiable. In oil and gas facilities, it is the cornerstone of Emergency Shutdown (ESD) and Fire & Gas (F&G) systems on offshore platforms, floating production vessels, refineries, and gas compression stations. Here, it meticulously monitors wellhead pressures, pipeline flow rates, compressor bearing temperatures, and vessel levels, providing the essential data needed to initiate protective actions before conditions reach a critical state.

In the power generation sector, the TRICONEX 3008N is indispensable for turbine overspeed protection and burner management systems (BMS) in combined-cycle and conventional plants. It accurately acquires data from sensors measuring exhaust gas temperatures, steam pressures, and fuel flow rates. Within the chemical, petrochemical, and pharmaceutical industries, the module is critical for monitoring reaction temperatures in batch processes, pressure in volatile storage tanks, and precise analytical instrument outputs. Its high accuracy, extensive signal support, and SIL 3 certification make it the ideal choice for safeguarding personnel, protecting environmental assets, and preventing catastrophic loss of primary containment.

3008N TRICONEX

Related Products

3006: An 8-Channel Analog Input Module, offering similar functionality with a lower channel count.

3503E: A newer generation Enhanced Analog Output Module for modern Tricon systems.

2351: A 16-Channel Analog Output Module, used for controlling final elements like control valves.

2401: A 16-Channel Digital Input Module, for monitoring discrete devices such as pressure switches and E-Stops.

8312: Main Processor for the Tricon v11 system, which processes all input data from the 3008N.

4329: Triconex Communication Module, for network integration with plant DCS and other systems.

9662-810: Redundant Power Supply, providing critical power to the chassis housing the 3008N.