NI SCXI-1160

Description

NI SCXI-1160 Product Description

Detailed Parameter Table

NI SCXI-1160

Product Introduction

The NI SCXI-1160 is a 16-channel general-purpose relay switch module, designed to be a versatile component within NI’s Signal Conditioning Extensions for Instrumentation (SCXI) series. It serves as a crucial element for applications that require precise control over signal routing, switching, and control of external devices.

Equipped with 16 independent SPDT (Form C) latching relays, the SCXI-1160 offers a high degree of flexibility. Each relay has a normally closed (NC), normally open (NO), and common (COM) terminal, allowing for a wide range of switching configurations. The module’s relays feature extremely low on-resistance and thermal offset, ensuring accurate and reliable signal handling. This makes it suitable for applications where maintaining signal integrity is of utmost importance, such as in high-precision measurement setups or when dealing with sensitive electronic components.

Core Advantages and Technical Highlights

High Channel Count and Versatile Relay Configuration: The 16-channel design of the NI SCXI-1160 enables the simultaneous control and switching of multiple signals. The SPDT (Form C) latching relays provide three connection options per channel, allowing for complex signal routing. This versatility is invaluable in applications where different signal paths need to be established based on specific conditions. For example, in a multi-sensor data acquisition system, the SCXI-1160 can be used to selectively route sensor signals to the appropriate data acquisition channels, optimizing the system’s performance and flexibility.

Powerful Switching Capabilities: With a switching capacity of 2 A at 250 VRMS or 2 A at 30 VDC, the SCXI-1160 can handle medium-level signals with ease. This makes it suitable for a variety of applications, including industrial control systems, where it can be used to switch power to motors, solenoids, or other electrical loads. The high contact-to-coil isolation of 250 VRMS ensures safe operation, even in environments with high electrical noise or potential electrical hazards. The module’s ability to switch at a maximum rate of 50 operations per second allows for rapid response times, enabling real-time control and monitoring in dynamic systems.

Low On-Resistance and Thermal Offset: The relays in the SCXI-1160 have extremely low on-resistance and thermal offset, which is crucial for maintaining signal integrity. Low on-resistance minimizes signal attenuation, ensuring that the original signal characteristics are preserved during switching. Thermal offset, which can cause errors in signal measurement, is kept to a minimum, resulting in more accurate and reliable signal processing. This is particularly important in applications such as precision voltage or current measurements, where even small deviations can lead to significant errors in the overall system performance.

Software Programmability and Compatibility: The SCXI-1160 is completely software programmable, making it easy to integrate into a wide range of systems. It is compatible with NI’s software ecosystem, including LabVIEW and LabWindows/CVI, as well as NI-DAQ devices and NI-Switch driver software. This compatibility simplifies system development and configuration, allowing engineers to quickly develop custom applications that leverage the module’s capabilities. Whether building a simple automated test system or a complex industrial control network, the SCXI-1160’s software programmability and compatibility enable seamless integration with existing hardware and software components.

Typical Application Scenarios

Industrial Process Monitoring and Control: In industrial settings, the NI SCXI-1160 plays a vital role in process monitoring and control systems. It can be used to switch and route signals from various sensors, such as temperature, pressure, and flow sensors, to the appropriate data acquisition or control devices. For example, in a manufacturing plant, the module can be used to control the flow of materials by switching valves or to monitor the performance of equipment by routing sensor signals to a central monitoring station. The high channel count and reliable switching capabilities of the SCXI-1160 make it suitable for large-scale industrial applications, where multiple signals need to be controlled and monitored simultaneously.

Production Testing and Quality Assurance: In production testing environments, the SCXI-1160 is used to automate the testing process. It can be programmed to switch test signals to different components or subsystems, allowing for rapid and accurate testing of products. For instance, in the testing of electronic circuit boards, the module can be used to connect and disconnect test probes, enabling the efficient testing of multiple components on the board. The low on-resistance and thermal offset of the relays ensure accurate test results, while the software programmability allows for easy customization of the test procedures. This helps manufacturers improve production efficiency and ensure the quality of their products.

Laboratory Testing and Research: In research laboratories, the SCXI-1160 is a valuable tool for a wide range of experiments. It can be used to control the flow of electrical signals in complex experimental setups, such as in materials testing, where it can switch power to heating elements or apply electrical stimuli to samples. The module’s ability to handle medium-level signals and its precise switching capabilities make it suitable for experiments that require accurate control and measurement of electrical parameters. The software programmability also allows researchers to easily modify the experimental setup and control sequences, facilitating the exploration of new scientific concepts and the development of new technologies.

NI SCXI-1160

Related Model Recommendations

NI SCXI-1161: Similar to the SCXI-1160, the NI SCXI-1161 is also a general-purpose relay switch module. However, it may have some differences in its jumper configuration and specific performance characteristics. It can be used as an alternative or in combination with the SCXI-1160 in applications where additional channels or slightly different switching requirements are needed. For example, in a large-scale data acquisition system with a high number of channels, using both SCXI-1160 and SCXI-1161 modules can provide the necessary flexibility to handle all the signals.

NI SCXI-1127/1128/1129/1130: These modules are also part of the SCXI relay switching family. They may have different channel counts, relay types, or switching capabilities compared to the SCXI-1160. For applications where a smaller number of channels are required or where different relay characteristics, such as higher or lower switching voltages, are needed, these modules can be considered. For instance, in a small-scale experimental setup with limited space and a lower number of signals to switch, an SCXI-1127 module might be a more suitable choice.

NI SCXI-1324 Terminal Block: The NI SCXI-1324 terminal block is designed to work in conjunction with the SCXI-1160. It provides the necessary connections for the module in the 16-SPDT general-purpose topology, ensuring a secure and reliable physical connection between the module and the external devices or cables. Using the appropriate terminal block is essential for proper installation and operation of the SCXI-1160, especially in applications where a clean and organized wiring layout is required.

NI DAQ Devices: The SCXI-1160 is optimized for use with NI data acquisition (DAQ) devices. Depending on the specific requirements of the application, different NI DAQ devices can be paired with the SCXI-1160. For example, the NI MIO-16 boards mentioned in the compatibility section can be used in combination with the SCXI-1160 to create a complete data acquisition and control system. The choice of DAQ device will depend on factors such as the number of channels, sampling rate, and resolution required for the application.

Installation, Commissioning and Maintenance Instructions

Installation Preparation: Before installing the NI SCXI-1160, ensure that the SCXI chassis (such as the SCXI-1000) is properly grounded and powered off. Verify that the chassis has an available slot compatible with the SCXI-1160 module. Use anti-static precautions, such as wearing an anti-static wrist strap and working on a grounded surface, to prevent electrostatic discharge from damaging the module. Check the specifications of the external signals that will be connected to the module to ensure they are within the 2 A at 250 VRMS or 2 A at 30 VDC switching capacity. Gather the necessary cables and connectors, such as those required to connect the module to the terminal block and to the controller.

Commissioning: Insert the SCXI-1160 module into the available slot in the SCXI chassis, ensuring that it is properly seated and locked in place. Power on the chassis and connect the SCXI system to a host computer with the appropriate NI-DAQ and NI-Switch driver software installed. Use NI Measurement & Automation Explorer (MAX) to detect the module and configure its settings, such as channel mapping and relay control parameters. Calibrate the module if necessary, following the calibration procedure outlined in the NI documentation. Test the module by sending control signals to the relays and verifying that the switching operations are occurring as expected. Use NI software tools, such as LabVIEW, to develop and test applications that interface with the SCXI-1160.

Maintenance Suggestions: Regularly check the module for any signs of physical damage, such as bent pins on the connectors or visible signs of overheating. Inspect the cables connected to the module for any signs of wear or corrosion, especially in harsh environments. Periodically test the relays to ensure that they are still functioning properly. Use NI’s software tools to monitor the performance of the module, such as checking for any abnormal switching times or high on-resistance values. If the module is used in an environment with high electromagnetic interference, consider using additional shielding or filtering measures to protect the module and ensure reliable operation. Keep the module’s firmware up to date by installing any available updates from NI, as these may include performance improvements and bug fixes.

Service and Guarantee Commitment

While NI has announced the obsolete status of the SCXI-1160, some suppliers still offer it for purchase and repairs. Although the standard NI warranty may not be applicable in the same way as for non-obsolete products, suppliers like Apex Waves may provide their own service and support options. Technical support may still be available through NI’s general support channels for basic inquiries related to the module’s operation and compatibility. However, for more in-depth support or in case of complex issues, it is advisable to contact the supplier from whom the module was purchased. Some extended service agreements might be available from third-party providers, which could include services such as on-site maintenance, priority repair, and access to technical expertise related specifically to the SCXI-1160.