Triconex 3401 Digital Output Module - Image 1

Triconex 3401 Digital Output Module - Image 2

Triconex 3401 Digital Output Module

Technical Specifications

Output and Signal Parameters
- The nominal output voltage is 24V DC, and the operating voltage range is 15 – 30V DC, with an absolute maximum output voltage of 33V DC and an absolute maximum reverse input voltage of -0.6V DC.
- In switching mode, the maximum output current is less than 4.8A with self-limiting function, and the typical value is 3A; in carry mode, the minimum output current is more than 0.7A with self-limiting function, and the typical value is 1.5A.
- The loop-back threshold is 0 – 5V DC for the off state, 6 – 14V DC for the transition state, and 15 – 30V DC for the on state, and the off-state leakage current to the load is less than 1mA.
Power and Isolation Parameters
- The minimum isolation voltage between functional circuit and protective ground is 500V DC, and the minimum isolation voltage between functional circuit and functional logic ground is 800V DC, which can effectively prevent electrical interference from affecting the normal operation of the module.
- The voltage drop in the on-state is less than 1V DC when the current is 1.5A, which reduces the energy loss during signal transmission and ensures the efficiency of power utilization.

Category: Triconex

Description

- Physical and Environmental Parameters
  - The weight of the module is 1360 grams. It has a compact structure, which is convenient for installation in the control cabinet and saves space.
  - Its operating temperature range is -40°C to 70°C, which allows it to work stably in extreme temperature environments such as cold high-altitude areas and high-temperature chemical workshops. It can adapt to the harsh working conditions of most industrial sites.
Functional Features
- Redundant Circuitry Enhances Operational Reliability
  - It adopts four-way output circuits for key signal paths, and the triple isolated channels design ensures the redundancy of the system. When one circuit has a fault, the other circuits can immediately take over the work. This redundant design avoids the interruption of the control process caused by single-point faults and ensures the continuous and stable operation of the industrial system.
  - The output voter diagnostic routine further improves the safety of the module. It can continuously monitor the output signal state and verify the correctness of the output signal through voting logic, preventing misoperation of on-site equipment caused by abnormal output signals.
- Hot-swappable Design Facilitates Maintenance
  - The module supports hot-swappable function, which allows maintenance personnel to replace the faulty module when the entire safety system is running normally. This eliminates the need to shut down the entire industrial process during maintenance, avoiding economic losses caused by production suspension and greatly improving the maintenance efficiency of the system.
- Comprehensive Fault Alarm and Rapid Diagnosis
  - It is equipped with a complete field alarm function, which can promptly detect and report common faults such as field power loss and output point short circuit. This enables the control center to quickly know the operation status of the module.
  - The loop-back detection function can monitor the output signal loop in real time. The loop-back scan time for all 16 output points is less than 1 millisecond, which can quickly locate abnormal problems in the signal transmission process and reduce the time and difficulty of troubleshooting.
Application Scenarios
- Oil and Gas Industry
  - In onshore refineries and offshore drilling platforms, it is integrated into emergency shutdown systems and fire and gas detection systems. It controls the opening and closing of emergency shut-off valves according to signals from the safety system. When oil and gas leakage or overpressure occurs, it can quickly trigger valve closure to prevent the spread of dangerous situations.
  - In long-distance oil and gas transmission pipeline systems, it controls the actuators of pipeline valves. It cooperates with the remote control center to realize the remote control of pipeline switching and ensure the safe and stable transportation of oil and gas.
- Chemical Industry
  - In chemical plants producing flammable and explosive chemicals, it is used in reactor safety control systems. It controls the feeding valves and discharge valves of reactors. When the reaction temperature or pressure exceeds the safety limit, it can immediately cut off the feeding and discharge channels to avoid dangerous reactions such as explosions.
  - In chemical storage areas, it is connected with the storage tank protection system to control the emergency spray devices and isolation valves. When a leakage fault is detected, it can quickly start the spray device and close the isolation valves to reduce the hazard of chemical leakage.
- Power Industry
  - In thermal power plants, it is applied to the safety control systems of boilers and steam turbines. It controls the operation of protective components such as steam turbine emergency stop valves. When abnormal parameters such as excessive steam pressure occur, it can immediately activate the stop valve to protect the safe operation of key power generation equipment.
  - In nuclear power plants, it is used in reactor auxiliary safety systems to control the switching of coolant circulation pumps and isolation valves. It ensures the stability of the reactor’s operating environment through reliable signal output and guarantees the safety of the nuclear power generation process.
- Metallurgical and Pharmaceutical Industry
  - In iron and steel metallurgical plants, it is integrated into blast furnace and converter control systems. It controls the feeding mechanisms and exhaust valves of smelting equipment. It adjusts the operation of the equipment according to the smelting temperature and furnace pressure signals to maintain the stability of the smelting process.
  - In pharmaceutical production lines that require strict process control, it controls the operation of raw material conveying pumps and batching valves. It ensures that each step of the pharmaceutical process is carried out according to the preset parameters through accurate output control, which guarantees the quality and safety of pharmaceutical products.

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