PLCs, Power Supplies & Others

This analog input module converts field sensor signals into digital values for the PLC processor. It integrates seamlessly into the Fuji Electric F-Touch series control platform. The unit handles up to four independent analog channels from a single module slot. Users can monitor temperatures, pressures, flow rates, and tank levels with accuracy.

Input Channel Configuration and Signal Ranges

This module features four differential input channels for enhanced noise immunity. Each channel accepts current signals from 4 mA to 20 mA for standard transmitters. Users can also configure voltage inputs of 0 V to 10 V or -10 V to +10 V. The unit supports both single-ended and differential wiring configurations. Each channel includes adjustable filtering for noise rejection in electrically noisy environments.

Signal Conversion and Measurement Precision

The FTU344A achieves a resolution of 14 bits for accurate signal representation. The unit converts each channel sequentially with a conversion time of 2 ms per channel. Accuracy reaches ±0.2% of the full-scale range at 25 °C ambient temperature. Temperature drift remains below ±50 ppm/°C for stable industrial performance. This precision supports critical process control applications with tight tolerance requirements. Consequently, users achieve consistent product quality and reduced material waste.

Channel Isolation and Noise Immunity

This module provides isolation between each input channel and the backplane bus. Isolation voltage reaches 500 V AC for protection against ground loops. This feature prevents measurement errors caused by potential differences between sensors. The unit also includes built-in input filtering for high-frequency noise rejection. Users can configure filter settings through the programming software. Furthermore, the module detects open-wire conditions on 4-20 mA input channels.

Communication and Data Exchange

The module exchanges data with the CPU through the F-Touch backplane bus. It automatically maps converted values to the PLC memory for easy access. Each channel provides raw digital data and scaled engineering units. The unit supports both local and remote rack installations. Diagnostic information includes over-range and under-range detection for each input. This feedback enables operators to identify sensor or wiring issues quickly.

Energy Consumption and Thermal Performance

The module draws 35 mA at 5 V DC from the backplane for internal logic. Total power dissipation remains below 1.5 W under normal operating conditions. The unit operates reliably between 0 °C and 55 °C ambient temperature. Natural convection cooling maintains safe thermal conditions without fans. Humidity tolerance spans 10% to 90% without condensation issues. This efficient design ensures long-term stability in standard industrial environments.

Installation and Wiring Convenience

This module features a removable terminal block for simplified field wiring connections. Installers can pre-wire the connector before inserting it into the rack slot. The unit accepts wire gauges from 0.2 mm² to 1.5 mm² for flexible installation. A secure locking mechanism prevents accidental dislodgement during vibration. Furthermore, the housing carries an IP20 rating for protection against solid objects. This rugged design suits chemical processing, water treatment, and HVAC applications.

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