F2-8AD4DA-2 AUTOMATIONDIRECT

F2-8AD4DA-2 AutomationDirect Input module

Brand：AutomationDirect Model number：F2-8AD4DA-2

Country of origin: U.S. Product weight：0.55kg

HS code：8517623990

Product Details：

Product Dimensions：

The AutomationDirect F2-8AD4DA-2 is an Analog Input and Output Combination Module designed for the DL205 (DirectLogic 205) Series Programmable Logic Controller (PLC) system. This single module consolidates both Analog-to-Digital (AD) and Digital-to-Analog (DA) conversion capabilities, making it a cost-effective and space-saving solution for applications requiring both analog sensing and analog control within the DL205 platform.

Product Specifications

Product Series: DirectLogic 205 (DL205)
Module Type: Analog Combination Input/Output Module
Analog Input Channels (AD): 8 channels
Analog Output Channels (DA): 4 channels
Input Signal Range: Configurable for voltage or current (e.g., $0-5 \text{ VDC}$ , $0-10 \text{ VDC}$ , $\pm 5 \text{ VDC}$ , $\pm 10 \text{ VDC}$ , $4-20 \text{ mA}$ , etc.)
Output Signal Range: Configurable for voltage or current (e.g., $0-5 \text{ VDC}$ , $0-10 \text{ VDC}$ , $4-20 \text{ mA}$ , etc.)
Input Resolution: Typically 12-bit (4096 counts)
Output Resolution: Typically 12-bit (4096 counts)
Internal Current Consumption: $160 \text{ mA}$ at $5 \text{ VDC}$ (nominal)
External Power Supply Requirement: Requires an external $24 \text{ VDC}$ supply for the field wiring power.
Compatibility: Works with all DL205 CPUs (such as the D2-250-1, D2-260, etc.) and bases.

Product Advantages

High Channel Density: By combining 8 input channels and 4 output channels into a single module, the F2-8AD4DA-2 saves valuable slot space in the DL205 base unit, allowing for more diverse control capabilities in a compact footprint.
Cost-Effective Solution: Purchasing a single combination module is generally more economical than purchasing separate 8-point Analog Input and 4-point Analog Output modules.
Flexibility: Both the input and output channels are software-configurable for common voltage and current ranges, providing flexibility to interface with a wide array of industrial sensors, transmitters, and control devices.
Standard Resolution: The 12-bit resolution for both AD and DA channels provides sufficient precision for the vast majority of standard industrial control and monitoring applications.

Important Considerations (Precautions)

External Power: The module requires an external $24 \text{ VDC}$ power supply for the field devices and output signal drive. Ensure this power source is properly sized, filtered, and reliably connected.
Wiring Practices: Use proper shielded twisted-pair cables for all analog I/O wiring to minimize electrical noise and interference, which can severely impact signal accuracy. Ground the cable shields at the module end.
Channel Configuration: Before operation, carefully configure the desired signal range (e.g., $4-20 \text{ mA}$ or $0-10 \text{ VDC}$ ) for each individual channel within the PLC programming software to match the field device. Incorrect configuration can result in inaccurate readings or damage to the field devices.
Temperature Drift: Like all analog electronics, the module's accuracy can be subject to small temperature-related drift. For highly critical measurements, consider installing the PLC system in a temperature-controlled environment.

Product Applications

The F2-8AD4DA-2 module is used in industrial automation systems where continuous, real-time monitoring and control of physical variables are required.

Process Control: Monitoring temperature (via RTDs/thermocouples with signal conditioners), pressure, level, and flow transmitters, and simultaneously controlling variable speed drives (VSDs), control valves, or actuators using analog output signals.
HVAC Systems: Monitoring external environmental sensors (temperature, humidity) and providing analog signals to adjust dampers, fan speeds, or proportional valves.
Packaging and Manufacturing: Monitoring line tension, machine speed feedback, and controlling volumetric pumps or dispensing systems.
General Instrumentation: Interfacing the PLC with any industrial device that outputs or requires a standard proportional analog signal for measurement or control.

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