5751 National Instruments

5751 National Instruments Control Unit

Product  Description：

National Instruments (NI) Control Units, primarily represented by the CompactRIO (cRIO) and PXI Controller series, are high-performance embedded control and acquisition systems. These units combine a real-time processor, a user-programmable FPGA (Field-Programmable Gate Array), and modular I/O conditioning within a single rugged chassis. Designed for applications requiring deterministic control, high-speed signal processing, and laboratory-grade measurement accuracy, these control units bridge the gap between heavy industrial programmable automation controllers and high-end data acquisition systems.

Product Parameters

The technical baseline of an NI Control Unit emphasizes processing power, timing precision, and structural resilience:

• Processor Architecture: Features multi-core Intel Atom, Intel Core, or ARM-based processors running a deterministic real-time operating system such as NI Linux Real-Time.

• FPGA Integration: Equipped with Xilinx Kintex-7, Artix-7, or Zynq UltraScale+ FPGAs, allowing for hardware-timed control loops and custom digital logic execution.

• Timing and Synchronization: Integrated chassis backplane synchronization capabilities supporting sub-microsecond timing accuracy via IEEE 1588 (PTP) and specialized trigger lines.

• System Memory: Configurable options ranging from 1 GB up to 16 GB DDR3/DDR4 RAM, paired with high-capacity onboard solid-state storage (SSD) for local data logging.

• Communication Interface Ports: Equipped with dual Gigabit Ethernet ports, USB 2.0/3.0 peripheral interfaces, RS-232/RS-485 serial ports, and native CAN bus interfaces.

• Mechanical Rating: Built to withstand extreme conditions, often rated for 50g shock, 5g vibration, and operational temperature ranges spanning from -40°C to 70°C.

Product Advantages

NI Control Units provide distinct engineering advantages through software-defined hardware capabilities:

• Software-Defined Flexibility: The unique combination of a real-time processor and a programmable FPGA allows engineers to reconfigure hardware behaviors, control loops, and timing protocols strictly through software updates.

• High-Speed Deterministic Execution: Capable of running control loops at rates exceeding 100 kHz with negligible jitter, making them suitable for highly dynamic physical systems.

• Seamless Software Integration: Fully supported by the NI LabVIEW graphical development environment, alongside text-based programming capabilities in C, C++, Python, and Linux-based tools.

• Diverse I/O Ecosystem: Compatible with hundreds of hot-swappable C Series or PXI modules, allowing a single control unit to interface simultaneously with strain gages, microphones, high-voltage lines, and digital buses.

• Advanced Edge Processing: Onboard processing power enables real-time fast Fourier transforms (FFTs), digital filtering, and localized machine learning algorithms directly at the edge before data is transmitted.

Product Applications

These advanced control units are widely deployed across industries requiring high-fidelity control and measurement:

• Aerospace and Defense Testing: Managing hardware-in-the-loop (HIL) testing for flight computers, satellite component simulation, and jet engine data logging.

• Industrial Machinery Control: Governing high-speed packaging equipment, multi-axis machine tools, and custom robotic systems that require sub-millisecond coordination.

• Grid Automation and Power Monitoring: Serving as intelligent electronic devices (IEDs) on electrical grids to monitor power quality, execute phasor measurements, and control smart switches.

• Automotive Research and Development: Coordinating powertrain testing, autonomous driving sensor data fusion, and in-vehicle data logging networks.

• Renewable Energy Systems: Executing high-speed control algorithms for wind turbine blade pitch adjustment and microgrid power inverter synchronization.

Important Precautions

To preserve the hardware's extreme accuracy and ensure safe operation, the following guidelines must be followed:

• Thermal Management and Clearance: Maintain the specified physical clearance around the chassis ventilation slots. Forced airflow or a dedicated cooling fan is required if the unit is operating near its maximum rated ambient temperature.

• Earth Grounding Protocol: Always connect the chassis grounding screw to a dedicated, low-impedance protective earth ground. Failure to ground the unit can result in inaccurate measurement readings due to floating potentials and increases the risk of electrostatic damage.

• Power Quality and Sourcing: Ensure the input power supply is regulated, noise-filtered, and matches the voltage specifications of the chassis. High-frequency voltage spikes on the power line can cause unexpected CPU resets or file system corruption.

• FPGA Compilation Awareness: Avoid running highly complex FPGA code that approaches maximum utilization limits without monitoring internal thermal metrics. Over-allocating internal gates can cause localized overheating within the silicon chip.

• Module Inserter Security: When mounting I/O modules into the control unit chassis, ensure the latching mechanism engages completely. Loose modules in high-vibration environments can cause intermittent bus connection failures or system crashes.

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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