The TX1N-2AD-BD Analog Input Expansion Board, also known as the TX1-2AD module, is an expansion board designed for use with 1S and 1N series PLCs. This module adds two additional analog input points to the PLC.

The TX1-2AD module is mounted internally on the top of the PLC, eliminating the need to change the installation area of the PLC. The module can be used with both voltage and current input for analog to digital conversion, and these input types can be mixed for greater flexibility.

The module features a 12-bit resolution, providing high accuracy for analog input signals. The input range can be configured to support a variety of input voltages or currents, depending on the application requirements.

The TX1N-2AD-BD module is commonly used in industrial automation applications where additional analog input channels are required. It is a cost-effective way to expand the capabilities of the PLC without needing to replace the entire system.

The TX1-2AD module has the following specifications:

    Analog input range: 0~10VDC (input resistance 300kΩ) or 4 to 20mA DC (input resistance 250Ω)
    Input voltage warning: The module may be damaged by an input voltage in excess of -0.5V to +15V DC (for voltage input) or -2mA to +60mA (for current input).
    Digital output: 12 bits
    Resolution: 2.5mV for voltage input (10V * 1/4000) and 8μA for current input ((20-4)mA * 1/2000)
    Integrated accuracy: ±1% for full scale (0 to 10V: ±0.1V, 4 to 20mA: ±0.16mA)
    Processing speed: About 30ms (15ms×2)
    Isolation: No isolation between each channel or the PLC
    Power supply: Internal power supplied from the main unit
    Number of occupied I/O points: 0 points (This number is not related to the maximum number of I/O points of PLC)
    Applicable cables: AWG26 (0.1288mm2) to AMG16 (1.309mm2)

The analog to digital conversion characteristic of the module cannot be adjusted, and there is no isolation between each channel or the PLC. The module can be powered internally from the main unit and does not occupy any I/O points on the PLC.

The module is compatible with a range of cable sizes, from AWG26 (0.1288mm2) to AMG16 (1.309mm2), making it a versatile option for various industrial applications that require analog input expansion.

Editor notes: "Dear friends, this module and its supported PLC models have now been replaced by newer models. If you are starting an automation project from scratch, we recommend that you choose our newer models instead. Thank you for your understanding!"