NI9361 National Instruments

NI9361 National Instruments Programmable controller

Product  Description：

The NI-9361 is part of the C Series of high-performance modules. It acts as a bridge between the physical world of motion and flow and the digital processing power of the NI platform. It is specifically engineered to handle high-speed pulse trains and can perform complex calculations—such as measuring frequency, duty cycle, and pulse width—on the module itself to reduce the processing load on the system controller.

Product Specifications

• Number of Channels: 8 counter channels

• Input Voltage Range: 0 V to 5 V (TTL/CMOS) with a maximum input voltage tolerance of 30 V

• Maximum Frequency: Supports pulse rates up to 1 MHz for high-speed tracking

• Internal Counter Resolution: 32-bit, providing high precision for long-duration or high-frequency measurements

• Isolation: 60 V DC continuous bank-to-earth isolation, protecting the system from voltage spikes and noise

• Input Types: Supports single-ended and differential signals, as well as A/B quadrature encoders

• Power Consumption: Typically $0.6 \text{ W}$ to $1.2 \text{ W}$ depending on the operating mode

• Connectivity: Options include D-Sub or 10-terminal spring-terminal connections for secure wiring

Product Advantages

• High Channel Density: Having 8 channels in a single C Series slot allows for the monitoring of multiple motors or flow lines simultaneously, maximizing chassis efficiency.

• On-Board Intelligence: The module performs calculations like period-to-frequency conversion internally, providing real-time data to the software without lag.

• Encoder Support: It natively supports quadrature encoders, making it easy to determine the position and direction of rotating shafts in mechanical systems.

• Synchronization: Because it is designed for the NI chassis architecture, the counter measurements can be perfectly synchronized with other data, such as analog voltages or temperature readings.

• Robust Protection: The built-in isolation prevents ground loops and ensures that noise from industrial motors does not damage the backplane of the controller.

Important Considerations

• Signal Compatibility: Ensure that the input signals do not exceed the 30 V maximum limit to prevent permanent damage to the module circuitry.

• Chassis Compatibility: Always verify that your specific CompactDAQ or CompactRIO chassis supports the NI-9361, as some older legacy backplanes may have limitations.

• Software Requirements: Use the latest version of the NI-DAQmx or NI-RIO drivers to access all advanced features and ensure stable communication.

• Wiring Noise: For high-frequency measurements above 100 kHz, it is highly recommended to use shielded twisted-pair cables to minimize electromagnetic interference (EMI).

• Grounding: Proper grounding of the system is essential to maintain the integrity of the 60 V isolation barrier.

Product Applications

The NI-9361 is widely utilized in sectors requiring precise timing and counting:

• Automotive Testing: Measuring engine RPM from crankshaft sensors or tracking vehicle speed from wheel encoders during dynamometer tests.

• Industrial Flow Measurement: Connecting to turbine or positive displacement flow meters to calculate the volume of liquids or gases in process control pipelines.

• Motion Control: Monitoring the exact position and velocity of conveyor belts or robotic arms using quadrature encoders.

• Material Testing: Measuring the pulse output from specialized sensors during high-speed stress or impact tests.

• Power Grid Monitoring: Calculating the frequency and phase of digital signals in energy distribution research.

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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