Triconex AI3721 Analog Input Module

Technical Specifications:

• It is designed for high availability and fault tolerance, ensuring continuous operation even in the event of hardware failures.
• The system supports safety integrity levels up to SIL 3 according to IEC 61508, making it suitable for critical safety applications.
• It operates with a triple modular redundant (TMR) architecture where three independent systems process data simultaneously and compare results to ensure accuracy and reliability.

• Output and Signal Parameters
  • It has 4 common - return, DC - coupled output channels, with a 12 - bit resolution and an output accuracy of less than 0.25% of the full - scale range within the 4 - 20mA controlled current range.
  • The output current can reach an over - range of 0 - 22mA and also has a 0mA output capability, with a step function response time of less than 2ms.
  • The typical switch time when a channel fails is 1ms, and the maximum switch time does not exceed 3ms.
• Power and Loop Parameters
  • The nominal external loop power supply is 24V DC, and the maximum allowable voltage is 32V DC, with reverse voltage protection.
  • For a 300Ω load, the loop power supply needs to be over 16V DC with a minimum current of 1A; for an 800Ω load, the loop power supply must be over 28V DC with a minimum current of 1A.
  • It has continuous over - range protection against 36V DC and 0V DC, which effectively protects the internal circuitry from damage due to abnormal voltage.

• • Electrical Parameters
    • The nominal output voltage is 120 VDC, with a voltage range of 90 - 150 VDC and a maximum withstand voltage of 160 VDC. The typical voltage drop of the module is less than 1.5 V, and the power module load is less than 10 watts.
    • Each output point has a maximum current of 0.8 A, a surge current of 4 A within 10 milliseconds, a minimum required load current of 30 mA, and a maximum load leakage current of 4 mA.
    • The field terminal is equipped with a 1 A fast - acting fuse, and the point isolation voltage can reach 1500 VDC / 2500 VDC, which can effectively isolate electrical interference.
  • Physical and Indicator Parameters
    • The module weighs 5000 grams, and its shell adopts a steel - blue robust structure, which can adapt to the installation and use of various industrial control cabinets.
    • It is equipped with multiple diagnostic indicators, including pass, fault, active and power indicators for overall module status, as well as an independent load indicator for each output point, which can directly reflect the working state of the module and each output point.

Technical Specifications:

• Type: Typically serves as an interface or communication module within the Tricon system.
• Communication Protocols: Supports industry-standard protocols to ensure compatibility with various control systems and devices.
• Power Supply: Operates within specified voltage ranges suitable for industrial environments.
• Environmental Endurance: Designed to withstand harsh conditions including wide temperature ranges, humidity, and exposure to dust.
• Certifications: Certified for use in Safety Instrumented Systems (SIS) up to Safety Integrity Level 3 (SIL 3), ensuring compliance with stringent safety standards.