Description
Key Technical Specifications
- Model Number: PXI-7344
- Manufacturer: National Instruments
- Series: NI-73xx Motion Controller
- Architecture: Dual-Processor (MC68331 CPU + ADSP-2185 DSP)
- Axis Count: 4 Independent or Coordinated Axes
- Servo Update Rate: 62 µs per axis (PID/PIVff)
- Encoder Feedback Rate: Up to 20 MHz
- Digital I/O: 32 Channels + 2 Static PWM Ports
- Analog Inputs: 4 Channels (±10 V) for Loop Closure
- System Integration: NI RTSI Bus Support
Functional Role & Application Analysis
The PXI-7344 is National Instruments’ high-performance 4-axis motion controller for the PXI platform. It handles the heavy lifting of trajectory generation, servo updates, and I/O management on dedicated onboard silicon, freeing your host PC for vision, logging, or complex decision logic. You get true real-time performance without the jitter of a general-purpose OS.
This module solves the deterministic control problem. With a 62 µs servo update rate and a dedicated DSP, it closes position and force loops with microsecond precision. The PXI-7344 supports up to 10 simultaneous onboard motion programs in a preemptive multitasking environment, meaning your homing routine, axis interpolation, and safety monitoring can run concurrently without blocking each other.
Typical use cases include:
- Semiconductor Wafer Handling: Coordinating 4 axes for sub-micron pick-and-place operations with synchronized vision triggering via RTSI.
- Automated Test Equipment: Running complex 3D scan trajectories while simultaneously acquiring analog sensor feedback for closed-loop force control.
- Packaging Machinery: Executing high-speed cam-profile motions with 32 digital I/O channels for inline sensor monitoring and actuator control.
Our Quality Standard & Testing Process
We know that a failed motion controller doesn’t just stop a machine; it can crash an actuator into a hard stop. The PXI-7344 is a precision instrument; we validate every unit against factory specifications before it ships.
- Visual & Component Inspection: We inspect the VHDCI connectors for bent pins, verify the PXI edge connector is clean, and check the PCB for thermal stress or component damage.
- Live System Test: The module is installed in a PXI chassis and run for 4 hours. We verify the dual-processor handshake, RTSI bus synchronization, and confirm the onboard RTOS boots without errors.
- Full-Function Diagnostics: We command coordinated multi-axis moves, verify the 62 µs servo update timing, and test all 32 digital I/O lines and 4 analog inputs for correct voltage levels and response.
- Warranty Backing: Only modules that pass all diagnostics ship with our 12-month warranty. We stand behind every PXI-7344 we sell.
NI PXI-7344
Compatibility & Migration Paths
To ensure this PXI-7344 is 100% compatible with your system, you must check these key compatibility points. Motion control is unforgiving; a wrong cable or driver version will leave you dead in the water.
- Driver & Software: You must install NI-Motion drivers and the FlexMotion / Motion VI Library before the card will function. Confirm your LabVIEW version supports the installed NI-Motion driver revision.
- Cabling & Connectors: The uses a 68-pin VHDCI Motion I/O connector and a separate 68-pin Digital I/O connector. Verify you have the correct SH68-68-S cables and UMI-7764 (or equivalent) breakout blocks. Pinout mismatches will damage the board.
- RTSI Integration: If synchronizing with DAQ or IMAQ cards, confirm those cards also support the RTSI bus. The uses RTSI trigger lines for hardware-timed coordination; non-RTSI cards cannot participate.
- Get Expert Help: Unsure about your cabling, driver version, or RTSI setup? Contact our technical team today for a free compatibility check. Send us your system configuration and we will validate the match.
