Triconex DO3401 Digital Output Module

Description

• Output Parameters
  • The module is configured with 32 independent digital output points, and each output point can work stably under the rated voltage of 24VDC.
  • The maximum switching current in switching mode reaches 4.8A, and the typical switching current is 3.0A; in degraded mode, the maximum current is over 0.7A, and the typical degraded mode current is 1.5A.
  • The loop-back voltage has clear state divisions, with 0 – 5VDC as the off state, 6 – 14VDC as the transition state, and 15 – 30VDC as the on state.
• Environmental Specifications
  • The operating temperature range covers -40°C to 70°C, enabling stable operation in both extremely cold outdoor environments and high-temperature on-site working conditions.
  • The protection level reaches IP65, and the aluminum alloy shell can effectively resist the erosion of dust and water in industrial environments, ensuring long-term reliable operation of internal components.
• Physical and Installation Specifications
  • The module dimensions are 120mm×80mm×30mm and the weight is 0.8 kilograms, with a compact structure that saves installation space in the control cabinet.
  • It adopts a mechanical keying design to prevent incorrect installation in the configured chassis, and requires a separate external termination panel connected to the Tricon backplane via cables.
• Electrical and Communication Specifications
  • The module operates with an input voltage of 24VDC, and the absolute maximum output voltage is 33VDC, while the absolute maximum reverse input voltage is -0.6VDC.
  • It supports Modbus RTU and Modbus TCP/IP as well as RS485 communication protocols, which can realize seamless data exchange with various industrial automation systems.

• Quadruplicated Voting Circuit for Enhanced Redundancy
  • The module is equipped with dedicated quadruplicated output voting circuits. It receives signals from the three-channel main processor, and the voting circuit processes the three signals to generate a single reliable output signal for the on-site terminal.
  • This quadruplicated redundancy design for key signal paths eliminates the hidden danger of single-channel faults, which is the core guarantee for the module to maintain stable output in safety-critical systems.
  • It supports hot-spare capability, and the backup module can quickly take over work when the main module fails, avoiding system operation interruption.
• Comprehensive Fault Self-Diagnosis and Alarm
  • It is equipped with a voltage loop-back circuit that can independently verify the operation of each output switch without relying on the load, and effectively detect potential faults.
  • It can trigger load or fuse alarms when the detected on-site voltage does not match the output command state, and activate fault indicators when any channel diagnostic fails. The generated chassis alarm signal can promptly remind staff of abnormalities.
  • It can detect faults such as field power loss and output point short circuits in real time, laying a foundation for efficient troubleshooting.
• Convenient Maintenance and High Compatibility
  • The hot-swap function allows on-line replacement of the module. Maintenance personnel can replace the faulty module without stopping the system, which greatly shortens maintenance time and reduces economic losses caused by production suspension.
  • It is fully compatible with Triconex Tricon V9, V10 and V11 safety systems, and can be seamlessly integrated into existing Triconex system architectures without additional adapter modules.
• Fast Response and Flexible Data Transmission
  • The module has a response time of less than 1 millisecond, which can immediately execute the control commands issued by the system, ensuring the timeliness of on-site equipment control actions.
  • It supports byte exchange, word exchange and byte-by-byte exchange modes, and uses an arbitration mechanism to ensure the priority and consistency of data transmission, avoiding data loss during signal transmission.

• Oil and Gas Industry
  • It is applied to emergency shutdown systems and fire and gas systems of offshore drilling platforms and onshore oil refineries. It controls the opening and closing of pipeline safety valves and the start-stop of emergency cut-off pumps to quickly respond to leakage and fire accidents.
  • It is used in long-distance oil and gas transmission pipeline systems to control the switching of section isolation valves, which can quickly cut off the faulty pipeline section when abnormal pressure or leakage occurs to reduce accident losses.
• Chemical and Petrochemical Industry
  • It is integrated into the safety control system of chemical processing plants, controlling the emergency discharge valves of reactors and distillation towers. When the temperature or pressure in the equipment exceeds the safety threshold, it can trigger valve opening to release pressure and avoid dangerous reactions.
  • It is used in high-pressure protection systems of petrochemical production lines to control the on-off of raw material feeding valves, ensuring that the production process is always within the safe pressure range.
• Power Generation Industry
  • It is deployed in the boiler protection systems and safety interlock systems of thermal power plants, controlling the emergency shutdown valves of steam turbines and the cut-off switches of fuel supply pipelines to prevent equipment damage caused by over-temperature or over-pressure of boilers.
  • It is used in the auxiliary systems of nuclear power plants to control the valves of cooling systems and the operation of related auxiliary equipment, meeting the high-safety operation requirements of nuclear power-related systems.
• Other High-Risk and Critical Industries
  • In the pharmaceutical industry, it is used in the safety control system of sterile preparation production lines to control the switches of fermentation tank feeding actuators and material conveying pipeline valves, ensuring the safety and accuracy of the pharmaceutical production process.
  • In the water treatment industry, it controls the start-stop of aeration pumps in sewage treatment plants and the switching of effluent valves, ensuring that each treatment process operates in accordance with preset procedures and realizing up-to-standard discharge of sewage.
  • In the metallurgical industry, it is applied to the safety control system of blast furnaces and continuous casting equipment, controlling the emergency stop devices of conveying rollers and the valves of water-cooling systems to ensure the safety of high-temperature smelting operations.