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Triconex 3481 Analog Output Module
Triconex 3481 Analog Output Module
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Triconex 3503EN High-Reliability Digital Input Module
Triconex 3503EN High-Reliability Digital Input Module

Triconex 3503E Triple Modular Redundancy Digital Input Module

Technical Specifications

  • Input and Signal Parameters
    • It is configured with 32 digital input channels, supporting 24V AC/DC input voltage, with a recommended input voltage range of 20 – 42.5V DC and a maximum allowable voltage of 42.5V AC/DC.
    • It accommodates DC signals and AC signals within the 47 – 63Hz frequency range, and achieves optical isolation between the field side and the Tricone system to prevent electromagnetic interference.
    • The response time of the module is less than 1ms, enabling rapid capture and transmission of field signal changes to meet real-time control requirements.
  • Physical and Environmental Parameters
    • The module weighs approximately 0.5 kilograms, with dimensions of 120mm x 80mm x 35mm, and features a compact structure suitable for installation in 19-inch standard DIN rail racks.
    • Its operating temperature ranges from -40°C to 70°C, and the storage temperature spans from -40°C to 85°C. It operates stably in environments with 5% – 95% relative humidity without condensation, and has a protection level of IP20.
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Description
    • Communication and Power Parameters
      • It supports multiple communication protocols including Modbus TCP/IP and RS485, enabling seamless data exchange with upper-level systems and other devices.
      • It adopts 24V DC power supply, which matches the power configuration of most industrial control systems and ensures stable power supply for long-term operation.
  • Functional Features
    • Triple Modular Redundancy Ensures Data Integrity
      • All critical signal paths of the module are fully triplicated. Each channel is equipped with an independent microprocessor that scans input points, organizes data, and transmits it to the main processor as required. The voting mechanism of the main processor verifies input data, and the system maintains normal operation even if a single channel malfunctions, eliminating the impact of single-point faults.
    • Comprehensive Diagnostic and Fault Indication
      • The module performs continuous and comprehensive diagnostics on each channel. Each channel independently conditions signals and monitors its own operating status. Any diagnostic failure on any channel triggers the module’s fault indicator and activates the chassis alarm signal.
      • It is capable of detecting stuck-on conditions where the circuitry fails to determine whether an input point is in the off state. It closes the internal switch of the input circuit to simulate a zero input signal for detection, ensuring accurate recognition of signal states.
    • Hot-Spare Capability and Easy Installation
      • The module supports hot-spare capability. When used with a separate external termination panel and cable interface connected to the Tricone backplane, it can quickly switch to the spare module in case of failure without shutting down the system.
      • It is mechanically keyed, which prevents incorrect installation in the configured chassis. Its modular design allows for quick integration into existing Tricone systems, simplifying system expansion and upgrade processes.
  • Application Scenarios
    • Oil and Gas Industry
      • In onshore refineries and offshore drilling platforms, it integrates into emergency shutdown systems and fire and gas detection systems. It collects signals from emergency stop buttons, limit switches and valve position sensors, and transmits these signals to the controller to trigger emergency shutdowns or fire suppression actions when hazards such as oil and gas leaks occur.
      • In high-pressure pipeline protection systems for oil and gas transmission, it monitors pressure switch signals. It cooperates with the controller to send out early warning information in a timely manner when pipeline pressure exceeds the safety threshold, and controls the opening and closing of isolation valves to avoid pipeline bursts.
    • Chemical Industry
      • In chemical production workshops that process flammable and explosive materials, it is used in reactor safety interlock systems. It collects signals from temperature and pressure switches on reactors. When process parameters exceed safe limits, it transmits signals to cut off feeding and discharge systems immediately.
      • In chemical storage areas, it connects with tank level switches and leakage detection sensors. It monitors the storage status of chemical materials in real time and activates alarm devices and isolation measures promptly upon detecting abnormal level or leakage signals.
    • Power Industry
      • In nuclear power plants and thermal power plants, it is applied to the safety protection systems of key equipment such as boilers and steam turbines. It collects status signals from safety valves and pressure relief devices, ensuring that the control system can quickly shut down relevant equipment when abnormalities occur to avoid major equipment damage.
      • In power transmission and distribution systems, it monitors the switching state of power distribution cabinets and the operation state of circuit breakers. It feeds back real-time data to the power monitoring center to guarantee the stability and safety of the power supply network.
    • Metallurgical and Pharmaceutical Industry
      • In iron and steel metallurgical plants, it integrates into blast furnace control systems. It collects signals from material level switches and temperature switches in blast furnaces, providing data support for adjusting feeding speed and air supply volume to maintain stable smelting conditions.
      • In pharmaceutical production lines with strict process requirements, it monitors the on-off state of raw material conveying switches and process control switches. It ensures that each production link operates in accordance with preset procedures, meeting the strict quality and safety standards of pharmaceutical production.
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