Yokogawa SAI143-H63/A4S00 16-Channel Analog Input Module

FAQ

• Q1: What is the maximum input current this module can handle?
  A1: The permissible input range is 0 to 25 mA; input beyond this range may damage the module.

• Q2: How is HART communication implemented on the SAI143-H63?
  A2: Each channel supports a single HART device, using a serial half-duplex mode with 1200 bps speed and FSK modulation.

• Q3: Can the SAI143-H63 module be used in high-temperature environments?
  A3: For SAI143-HC, it can operate between -20 to 70°C; however, input channel availability may be limited above 60°C.

• Q4: What is the function of the transmitter power ON/OFF feature?
  A4: It allows resetting alarm states of connected 2-wire devices by temporarily turning off the transmitter power for all 16 channels.

• Q5: Is module isolation provided between channels?
  A5: Yes, all 16 channels are isolated to prevent signal interference.

• Q6: Can Zener barriers be directly connected to this module?
  A6: No, an isolation barrier must be used for intrinsic safety systems; Zener barriers cannot be connected directly.

• Q7: What are the options for connecting external wiring?
  A7: Options include pressure clamp terminals, MIL cable, and a dedicated signal cable, with optional surge absorbers or dual-redundant blocks.

• Q8: How accurate is the SAI143-H63 for low current measurements?
  A8: Rated accuracy is ±16 µA for the input range 0.05 to 23 mA, ensuring precise low-level current measurements.

Analog Input Module SAI143 SAI143-H63/A4S00 Yokogawa

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