NI SCXI-1104C

Description

NI SCXI-1104C Product Introduction

Detailed Parameter Table

NI SCXI-1104C

Product Introduction

The NI SCXI – 1104C is a high – performance signal conditioning module designed specifically for medium – voltage signals. As part of the National Instruments Signal Conditioning Extensions for Instrumentation (SCXI) series, it is engineered to work in harmony with other SCXI components, such as the SCXI – 1001 chassis, and NI data acquisition (DAQ) devices.

With its 32 differential channels, the SCXI – 1104C offers a comprehensive solution for applications that require simultaneous monitoring of multiple medium – voltage signal sources. The module is equipped with a 3 – pole low – pass filter on each channel, which helps in reducing high – frequency noise and ensuring that the conditioned signals are clean and suitable for accurate measurement. The ±42 VAC / ±60 VDC voltage range makes it versatile enough to handle a wide variety of medium – voltage signals encountered in industrial, scientific, and research applications.

Core Advantages and Technical Highlights

High – Voltage Handling Capability

The SCXI – 1104C is designed to handle medium – voltage signals with ease. Its ability to manage voltages up to ±42 VAC / ±60 VDC makes it an ideal choice for applications where high – voltage signal conditioning is crucial. For example, in power distribution monitoring, it can accurately condition the voltage signals from transformers or switchgear, providing reliable data for grid management and safety monitoring.

Wide Bandwidth for Dynamic Signals

With a bandwidth of 10 kHz, the SCXI – 1104C can effectively capture and condition dynamic medium – voltage signals. This is particularly useful in applications such as motor drive monitoring, where the voltage signals can have rapid fluctuations. The wide bandwidth ensures that the module can faithfully reproduce the signal characteristics, enabling accurate analysis of motor performance and early detection of any anomalies.

Precise Filtering and Attenuation

The 3 – pole low – pass filter on each channel is a key feature of the SCXI – 1104C. This filter is designed to attenuate high – frequency noise, which is often present in industrial environments. Additionally, the divide – by – 10 attenuator stage before the amplifier helps in scaling down the input voltage to a level that can be safely and accurately processed by the subsequent circuitry. This combination of filtering and attenuation ensures that the conditioned signals are of high quality and suitable for accurate measurement and analysis.

Multiplexing for Efficient DAQ Integration

The module’s multiplexing capability allows for the consolidation of multiple inputs to a single module output. This feature simplifies the connection to a DAQ device, as only one input channel on the DAQ device is required to acquire data from multiple sources. In large – scale data acquisition systems with numerous sensors, this multiplexing functionality can significantly reduce the complexity of the wiring and the number of DAQ device input channels needed, leading to a more cost – effective and efficient system design.

Typical Application Scenarios

Power System Monitoring

In power generation, transmission, and distribution systems, the SCXI – 1104C can be used to monitor medium – voltage lines. It can condition the voltage signals from power transformers, switchgear, and distribution lines, providing real – time data on voltage levels, harmonics, and other electrical parameters. This data is crucial for ensuring the reliable operation of the power grid, detecting faults, and optimizing power distribution.

Industrial Process Control

In industrial plants, there are many medium – voltage equipment and processes that require monitoring and control. The SCXI – 1104C can be used to condition the voltage signals from motors, variable frequency drives, and other high – power equipment. By accurately measuring and analyzing these signals, plant operators can ensure the proper operation of the equipment, detect any signs of wear or malfunction, and implement preventive maintenance strategies.

Scientific Research and Testing

In scientific research and testing facilities, the SCXI – 1104C can be used in experiments that involve medium – voltage signals. For example, in high – voltage material testing, it can condition the voltage signals applied to samples to measure their electrical properties. In electrical engineering research, it can be used to analyze the performance of new circuit designs or components operating at medium – voltage levels.

NI SCXI-1104C

Related Model Recommendations

NI SCXI – 1001 Chassis: The SCXI – 1104C is designed to be installed in the SCXI – 1001 chassis. The 12 – slot capacity of the SCXI – 1001 allows for the integration of multiple SCXI modules, including the SCXI – 1104C, to create a comprehensive data acquisition and signal conditioning system.

NI E – series DAQ Devices: These devices, such as the NI USB – 6211, can be used in conjunction with the SCXI – 1104C to acquire and digitize the conditioned signals. The E – series DAQ devices offer high – speed and accurate data conversion, making them suitable for applications that require real – time data acquisition and analysis.

NI – DAQmx Software: This software is essential for configuring and operating the SCXI – 1104C. It provides a user – friendly interface for setting up the module’s parameters, such as input range, sampling rate, and channel routing. NI – DAQmx also supports various programming languages, allowing for custom – developed applications for data acquisition and analysis.

Installation, Commissioning, and Maintenance

Installation Steps

Chassis Installation: Install the SCXI – 1104C module into a compatible SCXI chassis, such as the SCXI – 1001. Ensure that the chassis is powered off before inserting the module. Align the module with the slot in the chassis and gently slide it in until it is fully seated. Secure the module in place using the locking mechanisms provided with the chassis.

Cabling: Connect the medium – voltage input signals to the appropriate terminals on the SCXI – 1104C module. Use shielded cables to minimize noise interference. Connect the output of the module to the input of the DAQ device using the recommended cables. Make sure all connections are tight and properly insulated to prevent electrical hazards.

Power Connection: Once the module is installed and cabled, power on the SCXI chassis. The SCXI – 1104C will draw power from the chassis power supply. Ensure that the chassis power supply is operating within the specified voltage and current limits.

Commissioning

Software Installation and Configuration: Install the NI – DAQmx software on the host computer. Use the software to detect the SCXI – 1104C module installed in the chassis. Configure the module’s parameters, such as input range, sampling rate, and channel type, according to the requirements of your application.

Functionality Testing: Perform basic functionality tests on the SCXI – 1104C module. Apply known medium – voltage signals to the inputs and verify that the conditioned signals at the output are as expected. Use a high – precision multimeter or other reference instruments to validate the measurements. Check for any signs of noise or interference in the output signals.

Calibration: If the module has not been calibrated recently, perform a calibration procedure. Use the calibration equipment mentioned in the parameter table, such as a high – precision voltage source and a digital multimeter, along with the NI – DAQmx software, to calibrate the module. Follow the calibration steps provided in the NI – DAQmx documentation to ensure accurate calibration.

Maintenance Tips

Regular Inspection: Periodically inspect the SCXI – 1104C module for any signs of physical damage, loose connections, or overheating. Check the terminal blocks for corrosion or discoloration, which could indicate a problem with the electrical connections. Inspect the cables for any signs of wear or damage.

Cleaning: Keep the module clean to prevent dust and debris from accumulating, which could affect its performance. Use a soft, dry cloth to clean the exterior of the module. Avoid using harsh chemicals that could damage the components.

Calibration: Calibrate the SCXI – 1104C module regularly, at least once a year, or more frequently if your application requires high accuracy. Follow the calibration procedures provided by National Instruments to ensure that the module maintains its specified accuracy.

Firmware Updates: Stay updated with the latest firmware versions for the SCXI – 1104C module. Firmware updates often include bug fixes, performance improvements, and new features. Check the National Instruments website regularly for available updates.

Service and Guarantee Commitment

The NI SCXI – 1104C comes with a standard warranty that covers defects in materials and workmanship. National Instruments offers repair services for the module in case of any malfunction. In case of issues, users can contact the National Instruments technical support team, which provides assistance in troubleshooting, installation, and configuration.

The company also provides calibration services to ensure the accuracy of the module. Calibration certificates are available, which are traceable to national or international standards. This commitment to service and support ensures that the SCXI – 1104C continues to perform reliably throughout its lifespan, providing users with a long – term solution for their medium – voltage signal conditioning needs.