PCIE-6343 National Instruments

PCIE-6343 National Instruments Servo Controller

Product  Description：

National Instruments (NI) servo controllers, primarily integrated within the PXI, CompactRIO, and PCI platforms, are high-performance motion control modules engineered for advanced research, test, and automated manufacturing systems. These controllers combine flexible software programming with rugged hardware architecture to deliver precise closed-loop control over velocity, position, and torque. By leveraging NI’s LabVIEW platform and FPGA (Field-Programmable Gate Array) technology, these controllers enable engineers to implement custom control algorithms with nanosecond-level deterministic execution.

Product Parameters

The technical characteristics of National Instruments servo controllers focus on high-speed loop rates, synchronization capabilities, and signal processing:

• Drive Interfaces: Supports command outputs for analog velocity/current signals (typically ±10V) and step/direction (pulse/direction) digital signals.

• Feedback Architecture: Dual-encoder inputs per axis supporting incremental quadrature encoders, absolute encoders (SSI, BiSS, EnDat), and resolver signals for absolute position tracking.

• Control Loop Rate: PID loop execution rates typically up to 20 kHz for standard modules, with FPGA-based controllers reaching rates exceeding 100 kHz.

• Synchronization Precision: Utilizes the PXI trigger bus or NI-CLK technology to achieve sub-nanosecond synchronization between motion axes and data acquisition modules.

• Digital I/O Allocation: Features dedicated high-speed digital inputs for forward/reverse limit switches, home sensors, and emergency stop inputs, alongside generic digital outputs.

• Bus Architecture: Compatible with standard PXI, PXI Express, CompactRIO (Chassis-based), and PCI form factors for direct backplane integration.

Product Advantages

NI servo controllers are highly regarded in automated test and complex motion environments due to their deep software-hardware integration:

• Unmatched System Synchronization: Unlike standalone controllers, NI modules allow motion control profiles to be perfectly synchronized with hardware-in-the-loop (HIL) testing and data acquisition (DAQ) measurements.

• Reconfigurable FPGA Control: Utilizing LabVIEW FPGA, developers can bypass standard PID limitations and deploy custom control algorithms, such as fuzzy logic or advanced vibration suppression, directly onto the silicon hardware.

• Rapid Development Cycle: Seamlessly integrates with the NI Motion Assistant and LabVIEW SoftMotion Module, allowing developers to configure profiles, test trajectories, and generate code quickly.

• Comprehensive Diagnostic Tools: Software utilities provide real-time tracking of position error, velocity profiles, and current demands, simplifying the tuning of complex mechanical systems.

• Modular and Scalable Design: System architecture allows users to easily expand axis counts or combine motion control with vision inspection systems on a single controller rack.

Product Applications

These servo controllers are deployed across advanced testing, validation, and automated production sectors:

• Aerospace Test and Simulation: Driving multi-axis structural test rigs, flight simulator actuators, and satellite component positioning systems.

• Semiconductor Testing: Controlling high-precision wafer handling stages and automated pick-and-place testing machinery where sub-micron accuracy is essential.

• Medical Device Automation: Operating laser cutting systems, precise fluid dispensing pumps, and automated assembly equipment for sensitive medical components.

• Automotive HIL Testing: Controlling dynamometers, throttle actuators, and automated steering test benches to simulate real-world driving conditions in a laboratory.

• Automated Optical Inspection: Synchronizing the high-speed motion of camera gantry systems with strobe illumination and image capture for line-scan vision inspections.

Important Precautions

To preserve system accuracy and avoid equipment damage, the following operational instructions must be implemented:

• Grounding and Shielding: Motion signals and encoder lines are highly susceptible to electromagnetic interference. Always use shielded twisted-pair cables and ensure the shield is grounded at the controller side to prevent signal degradation or encoder counting errors.

• Emergency Stop Implementation: Never rely solely on software-based control commands to stop a runaway servo motor. Always wire a physical, hardware-interrupt emergency stop switch directly to the drive’s enable line or the controller's dedicated E-Stop input.

• Limit Switch Verification: Before running automatic motion profiles, manually actuate the forward and reverse limit switches to verify that the controller reads the states correctly and halts command outputs immediately.

• Tuning Parameter Sequencing: When tuning the servo loop parameters (Proportional, Integral, Derivative), always start with conservative low-gain values. Excessively high proportional gain can cause violent mechanical oscillations that may damage the motor, gearbox, or mechanical stage.

• Thermal Management: High-density PXI and CompactRIO chassis generate significant internal heat. Ensure the chassis cooling fans are operating correctly and that filters are clean to prevent the motion modules from overheating and triggering thermal shutdown protective modes.

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Shipping Port:  China

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Warranty: one year

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