Yokogawa SAI143-H63 Analog Input Module

It enables high-precision analog signal acquisition, accurately converting 4-20mA analog inputs into digital signals for system processing.

Supports HART communication protocol, allowing two-way communication with field instruments compatible with HART to achieve functions like instrument parameter setting and status monitoring.

The 16-channel design enables simultaneous acquisition of multiple analog signals, improving module usage efficiency and system integration.

Collective isolation effectively prevents cross-channel interference and external signal interference, enhancing the module's anti-interference capability and stability.

Input signal: 4-20mA

Number of channels: 16 channels

Communication method: HART communication

Isolation method: Collective isolation

Wiring method: Signal cable interface adapter connection

Standard: ISA standard G3

Operating temperature: -20°C to 70°C

Possible cause: Mismatch between module range settings and sensor output range.
Solution: Check and reset the module's range parameters.

Possible cause: Sensor failure or wiring issues.
Solution: Replace the sensor and inspect wiring for looseness.

Symptom: Inability to communicate normally with HART instruments.

Possible cause: Incorrect communication cable connection or inconsistent HART address settings between the instrument and module configuration.
Solution: Verify cable connections and reset the address to match the configuration.

Possible cause: Incorrect communication parameter settings (e.g., baud rate, parity).
Solution: Check and correct parameters such as baud rate and parity.

Possible cause: Abnormal module power supply.
Solution: Check if the power supply is normal and the voltage is within the module's allowable range.

Possible cause: Internal hardware failure (e.g., circuit short, chip damage).
Solution: Contact professional maintenance personnel or the manufacturer's after-sales service for repair.

Possible cause: Unconnected power supply between the analog input module and field sensor, causing common-mode voltage interference.
Solution: Connect the negative terminal of the field sensor to the public M terminal of the module.

Possible cause: Long wiring, poor insulation, or electromagnetic interference.
Solution: Use shielded twisted-pair cables for signal lines, ground the shield layer at the PLC side with single-point grounding, and keep analog signal cables away from strong interference sources (e.g., frequency converters, high-power motors).