Triconex 3700A Triple Modular Redundancy Analog Input Module

Technical Specifications

- Electrical Parameters
  - It is configured with 32 differential input points, and each channel can be configured to support 4 – 20 mA, 0 – 20 mA, or 0 – 5 V DC signals.
  - It is equipped with a 16 – bit ADC, and the typical accuracy for the 4 – 20 mA signal is ±0.1% of full scale. The minimum input resistance is 30 MΩ (DC), and the typical power – off resistance is 30 kΩ (DC).
  - It obtains a +5 V DC operating voltage from the Tricon backplane, with a typical power consumption of about 2 W, and has 1500 V AC/DC isolation to enhance noise immunity.
- Response and Detection Parameters
  - The update rate is 10 ms per channel, enabling fast response to safety system requirements, and the response time is less than 500 μs.
  - It is capable of open and short – circuit detection for each channel, and can conduct comprehensive hardware and software fault detection through self – testing.

Category: Triconex

Description

- Physical and Environmental Parameters
  - The module weighs 0.5 kg and has dimensions of 90 mm × 90 mm × 60 mm, which is compact and easy to install in control cabinets.
  - Its operating temperature range is -40°C to +70°C, and it can work normally in an environment with 0 – 95% non – condensing humidity. It has an IP66 protection rating, which can adapt to harsh on – site industrial conditions.
Functional Features
- Triple Modular Redundancy Ensures Fault Tolerance
  - The triple modular redundancy architecture is the core of its high fault tolerance. When a single component or channel fails, the system can still maintain normal operation based on the internal voting mechanism without affecting the collection and transmission of analog signals.
  - The module has a mean time between failures of more than 100 years, which can maintain long – term stable operation in high – intensity and long – term industrial operation scenarios, reducing the probability of production interruptions caused by module failures.
- Precise Signal Acquisition and Strong Anti – Interference
  - The 16 – bit high resolution and high accuracy ensure the fidelity of analog signal acquisition from sensors such as temperature, pressure, and flow.
  - It has a typical common mode rejection of -80 dB (DC – 100 Hz) and a common mode range of -12 V to +12 V peak, which can effectively reduce signal interference and ensure the integrity of data transmission.
- Comprehensive Diagnostic Capabilities
  - It is equipped with independent diagnostic functions for each channel. In addition to detecting open and short circuits, it can also identify hardware and software faults.
  - It is equipped with module status indicators showing pass, fault, and active states, which can promptly send fault information to the upper – level system, facilitating maintenance personnel to quickly locate and solve problems.
Application Scenarios
- Oil and Gas Industry
  - In offshore drilling platforms and onshore refineries, it is integrated into emergency shutdown systems and fire and gas detection systems. It collects signals from pressure and gas concentration sensors. When abnormal data is detected, it transmits accurate data to the upper – level system in a timely manner to trigger emergency shutdown measures and avoid explosion and fire accidents.
  - In long – distance oil and gas transmission pipelines, it monitors the pressure and flow signals of the pipelines in real time to ensure the stability of the oil and gas transmission process and provide data support for the adjustment of pipeline operation parameters.
- Power and Nuclear Power Industry
  - In thermal power plants, it is used to collect analog signals such as boiler temperature, steam pressure, and generator load, and transmits the data to the safety control system to ensure the stable operation of power generation equipment and prevent equipment damage caused by parameter abnormalities.
  - In nuclear power plants, it is applied to the monitoring of nuclear reactor parameters. It collects data such as coolant temperature and pressure in the reactor, and provides reliable data guarantee for the safe operation of the nuclear reactor.
- Chemical and Manufacturing Industry
  - In chemical processing plants, it is used in the process safety control system. It collects analog signals in chemical reaction kettles, such as temperature, pH value, and material flow rate. When parameters exceed the safe range, it can cooperate with the upper – level system to quickly cut off the feeding and other operations.
  - In automated manufacturing production lines, it monitors the operating parameters of various production equipment, such as the pressure of stamping equipment and the speed of conveyor belts, to ensure the normal operation of the production line and the consistency of product quality.

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