Trident 3482 High-Current Analog Output Module Triconex AO3482.The 3482 is an analog output module and is part of the Trident control system. It works in conjunction with other modules to achieve industrial automation control. It has four output points with diverse output current types, including two channels with a range of 4 - 20 mA and two channels with a range of 4 - 40 mA. It features over - range protection and uses a special shunt circuit to vote on the output signals, ensuring the safety and reliability of driving field loads. Moreover, it supports hot swapping, which facilitates online maintenance.
Trident 3482 High-Current Analog Output Module Technical parameters and characteristics:
Output characteristics:There are 4 output points, which are common - grounded and DC - coupled. Among them, for points 1 - 2, the output current range is 4 - 20 mA (for control) and 0 - 22 mA (for over - range). The output accuracy is < 0.25% FSR (0 - 22 mA) within the 4 - 20 mA range, and this accuracy is maintained from 0°C to +70°C. For points 3 - 4, the output current range is 4 - 40 mA (for control) and 0 - 44 mA (for over - range). The output accuracy is < 0.25% FSR (0 - 44 mA) within the 4 - 40 mA range, and this accuracy is maintained from 0°C to 50°C.
Other parameters:The resolution is 12 bits. It uses the Forced Switch Diagnosis (FSD) function to ensure operational reliability. The maximum external loop power supply is 32V DC, and the nominal value is 24V DC. Different loads have different requirements for the output loop power supply. For example, for points 1 - 2 with a 300Ω load, it requires > 16V DC (minimum 1A). In terms of over - range protection, for points 1 - 2, it is 36V DC continuous and 0V DC continuous; for points 3 - 4, it is 36V DC continuous (with thermal derating) and 0V DC continuous. When there is a branch fault, the typical switching time is 1 ms, and the maximum value is 3 ms. The isolation voltage between the functional ground and the protective ground is at least 500V DC, and the isolation voltage between the functional ground and the logic ground is at least 800V DC.
Signal voting and redundancy:Each channel in the module has a dedicated ASIC to receive the output table from the main processor. The output signals are voted on through a special shunt circuit, and only one channel drives the field load, providing multiple redundancies for the critical signal path to ensure the safe and stable operation of the system.
Diagnostic function:It continuously performs FSD diagnosis. By artificially setting error conditions and observing the behavior of the voting circuit, it ensures high - reliability and safe operation and can also operate normally under various fault scenarios.
Hot-swapping function:It supports hot - swapping, which facilitates the online replacement of faulty modules or provides continuous backup for active modules. The mechanical key design prevents incorrect installation.
As part of the Triconex Trident control system, the 3482 analog output module plays a crucial role in the extraction, refining, and natural gas processing in the oil and gas industry, various chemical reaction processes in the chemical industry, as well as power generation, transmission, and distribution in the power industry. It ensures the safe and stable production, the compliance of product quality, and the reliable power supply by accurately controlling the operating parameters of relevant equipment.
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