Axis & Hardware Architecture

• Max axis capacity: 4 axes configurable independently or multi-axis coordinated interpolation
• Dual-core parallel processing: Embedded CPU for host communication and task scheduling; DSP for PID loop and trajectory generation; FPGA for high-speed encoder and pulse timing
• Motion mode compatibility: ±10 V analog servo drive, step/direction or CW/CCW stepper drive
• Onboard storage: 64 KB volatile RAM for temporary program buffering, 128 KB non-volatile flash ROM for permanent firmware and user program storage
• Slot occupation: Single-width 3U PXI peripheral slot, no additional chassis space required

Core Motion Performance Parameters

• Servo PID update rate: 62.5 μs per single axis, 250 μs for simultaneous 4-axis closed-loop update
• Stepper pulse output: Max 4 MHz pulse frequency, minimum 120 ns pulse width
• Encoder feedback: Quadrature incremental input, max 20 MHz counting rate, single-ended 0-5 V signal level
• Position range: ±2³¹ counts/steps for absolute and relative positioning
• Velocity range: 1 ~ 20,000,000 counts/s with trapezoidal/S-curve acceleration profile

Analog I/O Specifications

• Analog Inputs: 8-channel multiplexed 12-bit single-ended ADC, 4 for user feedback, 4 for internal diagnosis; ±10 V/±5 V/0-10 V/0-5 V programmable ranges
• ADC scan speed: 25 μs per enabled channel, 10 kΩ minimum input impedance
• Analog Outputs: 4-channel 16-bit single-ended DAC for servo torque command, fixed ±10 V range, ±5 mA max output current
• Auxiliary analog reference: 7.5 V @ 5 mA precision reference output for external circuit calibration

Digital & Safety I/O Parameters

• General Digital I/O: 32-bit bidirectional channel, 0-5 V logic level, 24 mA sink/source current per channel
• Axis-specific I/O: 3 limit/home inputs per axis, 1 high-speed capture trigger, 1 breakpoint output, 1 axis inhibit output
• PWM Output: 2-channel 8-bit resolution PWM, max 50 kHz frequency for auxiliary drive control
• Safety protection: 63 ms timeout watchdog timer, global shutdown input to disable all axis outputs instantly
• Signal isolation note: No onboard galvanic isolation; external isolated terminal block required for industrial field wiring

PXI & RTSI Bus Resources

• PXI bus compliance: PXI Rev.2.2 peripheral slot specification, 33 MHz 32-bit PCI bus bandwidth
• RTSI synchronization: 8 shared trigger lines for cross-module synchronization with DAQ, switch modules
• Backplane power draw: 1 A @ +5 V, 30 mA @ ±12 V, total typical power consumption 5.7 W
• Inter-module synchronization skew: <1 PID update cycle for multi-device coordinated motion

Mechanical & Environmental Specifications

• Dimension: 160 × 100 mm excluding VHDCI connectors, single 3U PXI form factor
• Weight: 170 g bare module weight
• Operating temperature: 0 ℃ ~ +55 ℃; Storage temperature: -20 ℃ ~ +70 ℃
• Humidity: 10%–90% non-condensing, Pollution Degree 1 indoor use only
• Voltage withstand: 12 V channel-to-ground, 22 V channel-to-channel continuous signal voltage

Compatibility Matching List

• Compatible chassis: PXI-1031, PXI-1042, PXI-1045 and all standard 3U PXI chassis
• Compatible controllers: PXI-8186 and all NI embedded/external PXI system controllers
• Matching accessories: UMI-7764 universal motion terminal block, 2m VHDCI shielded cable
• Official status: Fully obsolete, only aftermarket replacement inventory and third-party repair available

Software Compatibility

• Drivers: NI-Motion legacy driver suite, compatible with NI-DAQmx parallel use
• Configuration tools: NI MAX, Motion Explorer interactive tuning utility
• Supported software: LabVIEW 8.x and above, LabWindows/CVI, Python with NI-Motion API, C#
• Supported OS: Windows XP/7/10, Phar Lap ETS real-time operating system

Pros & Limitations

• Pros: Independent DSP real-time computing to avoid host PC delay, mixed servo/stepper axis hybrid control, high-speed sub-microsecond position capture, onboard standalone program operation, RTSI cross-device synchronization
• Limitations: No built-in signal isolation requiring external accessories, limited to 4 axes, outdated driver support for latest Windows versions, no EtherCAT bus interface