YOKOGAWA AAI143-H00 is an analog input module launched by Yokogawa Electric, which is suitable for industrial automation control systems. The detailed information is as follows:
- Place of Origin: Japan
- Type: Analog input module
- Weight: Approximately 0.3kg
- Input Channels: Equipped with 16 isolated input channels — each channel operates independently with isolation, avoiding signal crosstalk between channels and ensuring stable signal acquisition even if one channel malfunctions.
- Input Signals: Supports 4-20mA current signal input; it can also support other signal ranges (such as 0-10V) depending on the configuration — compatible with common industrial analog signal types, meeting the needs of connecting different sensors/transmitters (e.g., pressure transmitters for 4-20mA signals, voltage-type temperature sensors for 0-10V signals).
- Communication Protocol: Integrates the HART protocol to enable digital communication. This allows the module to exchange diagnostic data (e.g., transmitter fault information) and configuration parameters (e.g., adjusting signal range) with HART-enabled smart transmitters, simplifying on-site equipment maintenance and parameter setting.
- Isolation Characteristics: Each channel adopts an isolated design; the withstand voltage between the input and the system is 1500V AC for 1 minute. This high-voltage isolation effectively suppresses noise interference (such as common-mode interference from ground loops) in industrial sites, ensuring the accuracy of analog signal acquisition.
- Input Resistance: 270Ω (at 20mA) to 350Ω (at 4mA) when powered on; 500kΩ or higher when powered off — the low resistance when powered on matches the load requirements of 4-20mA transmitters, while the high resistance when powered off prevents leakage current from affecting other devices.
- Accuracy: ±16μA — this high accuracy ensures that the acquired analog signal has minimal deviation from the actual value, meeting the precision requirements of industrial process control (e.g., ensuring the error of flow measurement signals is within a small range).
- Data Update Cycle: 10ms — refers to the interval at which the module updates the acquired analog signal data and transmits it to the upper-level control system. The short update cycle (10ms) enables real-time monitoring of rapidly changing process parameters (e.g., instantaneous pressure fluctuations in pipelines).
- Transmitter Power Supply: 19.0V or higher (at 20mA), 25.5V or lower (at 0mA); the output current is limited to 25mA — provides stable DC power for 2-wire transmitters in the field, and the current limiting function prevents overcurrent damage to the transmitters.
- Maximum Current Consumption: 230mA at 5V DC, 540mA at 24V DC — indicates the power demand of the module itself, which is a key reference for configuring the power supply capacity of the control cabinet.
- It can set each channel to be compatible with 2-wire or 4-wire transmitters by configuring pins — no need to replace modules for different types of transmitters, improving the flexibility of on-site application.
- Has resistance to electromagnetic interference (EMI) and electrostatic discharge (ESD) — can maintain stable operation in complex industrial environments with strong electromagnetic radiation (e.g., near frequency converters, motors) or static-prone areas, reducing the risk of signal distortion or module failure caused by interference.
