SH68-68-EPM National Instruments

SH68-68-EPM National Instruments controller module

Product  Description：

National Instruments (NI) controller modules, primarily represented by the CompactRIO (cRIO) and PXI Express embedded controllers, function as high-performance edge computing units designed for advanced measurement, test, and automation systems. These modules combine a powerful real-time processor, a user-programmable FPGA (Field Programmable Gate Array), and a rugged chassis interface into a single hardware platform. Engineered to run NI Linux Real-Time operating systems, these controllers deliver deterministic execution for complex control algorithms and high-speed data acquisition.

Product Parameters

The technical baseline of an NI controller module centers on processing throughput, memory capacity, and deterministic synchronization:

• Processor Architecture: Features multi-core Intel Atom, Intel Core, or ARM-based processors optimized for low-latency mathematical processing and real-time application deployment.

• Integrated FPGA: Equipped with high-performance Xilinx Artix-7, Kintex-7, or Zynq UltraScale+ FPGAs, enabling hardware-level timing, custom triggering, and onboard signal processing.

• Memory Profiles: High-speed system RAM ranging from 1GB to 16GB DDR3/DDR4, paired with large non-volatile flash storage up to 32GB for local data logging and OS storage.

• Synchronization and Timing: Supports precise network synchronization via IEEE 1588 (PTP) and integrated hardware timing lines on the backplane, ensuring sub-microsecond alignment across modules.

• Interface Ports: Built-in connectivity includes dual Gigabit Ethernet ports, USB 3.0 ports for external storage, serial ports (RS-232/RS-485), and Mini DisplayPort for local HMI visualization.

• Power Demands: Typically operates on a wide input range of 9V to 30V DC for CompactRIO controllers, or derives stabilized multi-rail DC power directly from a PXI chassis backplane.

Product Advantages

NI controller modules are widely selected for sophisticated testing and deployment due to their unique hardware-software integration:

• Unified Software Environment: Fully programmable using NI LabVIEW, C/C++, or Python, allowing engineers to transition from design to hardware deployment using a single software framework.

• Reconfigurable I/O via FPGA: The onboard FPGA can be customized to execute high-speed control loops, digital filtering, or custom communication protocols at the hardware level without relying on the CPU.

• Extreme Environmental Durability: CompactRIO controllers feature high shock and vibration resistance, capable of sustained operation in temperature ranges from -40°C to 70°C.

• High-Speed Data Streaming: The high-bandwidth internal bus architecture allows for continuous, high-throughput streaming of raw sensor data from input modules directly to system memory or local storage.

• Deterministic Reliability: The NI Linux Real-Time OS ensures that critical control paths are prioritized over background OS tasks, preventing jitter and guaranteeing predictable execution timings.

Product Applications

These controller modules are heavily utilized in research, validation, and advanced manufacturing environments:

• Automated Test and Measurement: Serving as the central controller in PXI-based automated test equipment (ATE) racks for semiconductor, aerospace, and automotive validation.

• Grid Automation and Power Monitoring: Executing high-speed harmonic analysis and phasor measurements (PMUs) on electrical grids to monitor power quality in real time.

• Machine Condition Monitoring: Collecting and analyzing high-frequency vibration and acoustic data from heavy rotating machinery to predict mechanical failures.

• Autonomous Vehicle Prototyping: Acting as the central processing hub for sensor fusion, combining lidar, radar, and camera data to test autonomous driving algorithms.

• Industrial Machine Control: Managing complex, multi-axis motion control and precise thermal regulation loops in high-end manufacturing equipment.

Important Precautions

To preserve system stability and prevent hardware damage, the following operational instructions must be followed:

• Thermal Management: When deploying a standalone CompactRIO controller, ensure it is mounted vertically with adequate clearance around the cooling fins. For PXI controllers, ensure the chassis fan speed is set correctly to prevent CPU throttling under heavy computational loads.

• Grounding and Shielding: Connect the controller’s chassis ground terminal to a low-impedance earth ground. Improper grounding can introduce noise into the FPGA backplane, distorting precision analog measurements.

• Proper Power Shutdown: Avoid abrupt power disconnections while the controller is actively writing data to its internal flash storage, as this can corrupt the Linux Real-Time file system. Use software shutdown commands whenever possible.

• FPGA Compilation Management: Be mindful of FPGA resource utilization. Over-constraining the FPGA with excessive logic or unoptimized loops can lead to routing failures or localized thermal hotspots on the silicon chip.

• Module Inserter Care: When inserting C Series modules into a CompactRIO controller slot or peripheral cards into a PXI backplane, verify that the locking screws or latches are fully engaged to prevent intermittent bus connection failures during vibration.

The structure and details of the product：

Our services：

Shipping Port:  China

Payment: Bank of Chicago, Bank of Singapore

Express cooperation: fedex, DHL, UPS and your express account

Service: Professional Sales provides 24 hours /7 days online service

Warranty: one year

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