Triconex DO3201 Digital Output Module

Description

• Output Parameters
  • It is equipped with three isolated and identical output channels, and each channel is controlled by a dedicated ASIC chip that receives output instructions from the corresponding main processor’s I/O communication processor.
  • The module supports two common operating voltage specifications, including 24VDC and 120VAC, which matches most standard industrial actuators.
  • The voting circuit adopts a parallel-series path design, and the output signal is determined by the two-out-of-three voting result of the three-channel drivers.
• Physical and Installation Specifications
  • The module dimensions are 4.5cm×18.8cm×20.8cm, and the weight is about 1.4 kilograms, which is compact and convenient for dense installation in control cabinets.
  • It adopts a rack-mounted installation method that matches the Tricon chassis slot, and can be seamlessly integrated into the existing Triconex system rack.
• Environmental and Electrical Specifications
  • The operating temperature range reaches -40°C to 70°C, enabling stable operation in both low-temperature outdoor and high-temperature on-site environments.
  • It has good electrical isolation performance between channels, which can effectively prevent signal crosstalk and electromagnetic interference between different circuits.
  • The module operates with a stable power supply of 24VDC, which is consistent with the power supply standards of most industrial control systems and facilitates unified power configuration on site.

• Triple Modular Redundancy and Voting Mechanism
  • The triple modular redundancy architecture and unique quad output voting circuit ensure that the module can still maintain correct output signals even if one of the internal channels fails.
  • The two-out-of-three voting logic for output signals fundamentally avoids output errors caused by single-component malfunctions, which is the core guarantee for the module to meet SIL 3 level requirements.
• Continuous Fault Diagnosis
  • It runs output voter diagnostic routines regularly for each output point, which can quickly detect abnormalities such as channel driver failures and circuit open circuits.
  • The diagnostic results can be fed back to the central controller in real time, and the system can promptly send out alarm prompts, which helps maintenance personnel to locate and solve problems quickly.
• Easy Integration and Maintenance
  • It is fully compatible with Tricon V10 and V11 safety systems, and can realize fast data interaction with the controller without additional adapter components.
  • The modular design allows for easy expansion or replacement. When the system needs to be upgraded or maintained, the module can be disassembled and installed quickly, reducing the difficulty of on-site operation.
• Strong Adaptability
  • It supports two mainstream voltage standards and can be flexibly configured according to the power supply requirements of different on-site executive equipment such as solenoid valves and relays.
  • Its robust circuit design enables it to resist the harsh electrical environment on industrial sites, including voltage fluctuations and electromagnetic radiation, and maintain stable output performance.

• Oil and Gas Industry
  • It is widely used in emergency shutdown systems and high-integrity pressure protection systems of offshore drilling platforms and onshore gas processing plants. It controls the opening and closing of pipeline emergency shut-off valves and the start-stop of blowout prevention equipment to prevent leakage and explosion accidents.
  • In long-distance oil and gas transmission pipelines, it is used to drive the actuator of the pipeline section isolation valve, and can quickly cut off the corresponding pipeline section when a leakage is detected to minimize the scope of the accident.
• Chemical and Petrochemical Industry
  • It is deployed in the safety control system of ethylene, chemical fertilizer and other production units, and controls the action of the emergency discharge valve of the reaction kettle and the stop switch of the raw material feeding pump to avoid dangerous reactions caused by excessive material concentration.
  • In hazardous chemical storage areas, it is connected to the actuator of the storage tank’s overfill protection device. When the liquid level exceeds the safety threshold, it can immediately trigger the valve to close and stop feeding.
• Power Generation Industry
  • In thermal power plants, it is integrated into the boiler management system and steam turbine protection system to control the opening and closing of the boiler fuel cut-off valve and the emergency shutdown mechanism of the steam turbine, preventing equipment damage caused by over-temperature and over-pressure.
  • In nuclear power plants, it is used in class 1E safety-related systems to drive safety equipment such as reactor cooling system valves, which meets the extremely high safety and reliability requirements of the nuclear industry.
• Other Industrial Fields
  • In the metallurgical industry, it is applied to the control system of steelmaking blast furnaces and continuous casting machines, controlling the switching of the water-cooling system’s solenoid valves and the emergency stop of the conveying roller table to ensure the safety of the high-temperature smelting process.
  • In the water treatment industry, it controls the start-stop of the aeration pump in the sewage treatment process and the switching of the sludge discharge valve, ensuring that each treatment link operates in accordance with the preset safety procedures.
  • In the pharmaceutical industry, it is used in the automatic production line of sterile preparations to control the switch of the material conveying pipeline valve and the feeding actuator of the reaction kettle, ensuring the accuracy and safety of the pharmaceutical production process.