PXI-6238 National Instruments Programmable controller

Description

PXI-6238 National Instruments Programmable controller

Product Dimensions：

Product Description

The PXI-6238 is a high-channel-count, high-resolution DAQ module offering a blend of analog I/O, digital I/O, and counter/timers. Its key distinction is the inclusion of high-voltage analog outputs with integrated isolation.

• Platform: PXI (PCI eXtensions for Instrumentation).

• Series: M Series (Multifunction DAQ).

• Key Feature: $\pm 12 \text{ V}$ isolated analog outputs (AO).

• Isolation: The high-voltage outputs are galvanically isolated from the PXI backplane and other I/O, providing enhanced noise immunity and safety.

• Technology: Features the NI $\text{STC3}$ system controller for synchronization and timing control.

• Software: Fully compatible with NI LabVIEW, LabWindows/CVI, and Measurement Studio.

Product Parameters (Specifications)

Product Advantages

• Isolated High-Voltage Output: The $\pm 12 \text{ V}$ isolated AO channels are crucial for direct connection to industrial actuators, control valves, and other devices requiring a higher voltage or isolated signal, without the need for external signal conditioning.

• Multifunctionality: Combining AI, AO, DIO, and counters into one PXI module saves slot space and simplifies system integration.

• High Accuracy: $16$-bit resolution on both input and output provides precise measurement and control capabilities.

• PXI Integration: As a PXI module, it benefits from the platform’s superior synchronization, ruggedness, and modular expansion capabilities for building complex, reliable automated test and control systems.

• Driver Support: Backed by NI-DAQmx driver software, which simplifies programming, scaling, and synchronization tasks within the NI ecosystem.

Precautions (Safety and Operational)

• External Power: The high-voltage AO channels may require an external power source (e.g., $15 \text{ V}$ or $24 \text{ V}$) to achieve the full $\pm 12 \text{ V}$ range. Ensure the correct power is supplied according to the manual.

• Isolation Limits: While isolated, the $60 \text{ VDC}$ continuous working voltage limit must not be exceeded. Connect the module only to signals within this range to maintain isolation integrity and prevent damage.

• Connector Type: Use the correct shielded cable and terminal block (e.g., NI $\text{CB-68LP}$ or $\text{SCC}$ series) as specified by NI to ensure proper signal integrity and grounding.

• Grounding: Proper system grounding is essential for noise reduction, especially when dealing with analog signals and industrial environments.

• Software Configuration: Ensure the NI-DAQmx task and channel settings (e.g., input range, output range, terminal configuration) are correctly configured in the software to match the physical wiring and application requirements.

Product Applications

The PXI-6238 is suitable for demanding industrial and control applications that require a mix of measurement and high-power/isolated control signals.

• Industrial Control and Automation: Providing isolated control signals ($\pm 12 \text{ V}$) to proportional valves, actuators, and industrial interfaces in closed-loop control systems.

• Hardware-in-the-Loop (HIL) Simulation: Simulating real-world signals for Electronic Control Units (ECUs) where higher voltages are needed to emulate sensors or drive specific interfaces.

• Power Electronics Testing: Used in test benches for measuring low-voltage signals while simultaneously outputting isolated control signals to drive gate drivers or intermediate circuitry.

• Process Monitoring: Measuring standard analog sensor data (AI) while using the isolated AO to control larger industrial equipment like pumps or heaters.

• OEM Test Equipment: Integrated into custom-designed automated test equipment (ATE) where the PXI standard is utilized for robustness and high throughput.

Shipping Port: Xiamen, China

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