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NI9917 Datasheet(PDF) 1 Page - National Instruments Corporation |
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NI9917 Datasheet(HTML) 1 Page - National Instruments Corporation |
1 / 5 page C Series Digital Input and Counter/Timer Modules Overview High-performance digital input switching modules for National Instruments CompactRIO embedded systems, R Series expansion chassis, and NI CompactDAQ provide industrial logic levels for direct connection to a wide array of industrial automotive switches and transducers. Each module features an integrated connector junction box with screw terminal or cable options for flexible and low-cost signal wiring. All modules feature the NI CompactRIO Extreme Industrial Certifications and Ratings. System Compatibility You can use NI C Series modules in multiple system types depending on available software. See Table 1 for CompactRIO and NI CompactDAQ module compatibility because not all modules work with both systems. Many of the advanced features described apply only to reconfigurable I/O systems and not to NI CompactDAQ. Advanced Features When used in CompactRIO, C Series digital input modules connect directly to reconfigurable I/O (RIO) FPGA hardware to create high-performance embedded systems. The reconfigurable FPGA hardware within CompactRIO provides a variety of options for timing, triggering, synchronization, change detection, digital pattern matching, or digital communication. For instance, with CompactRIO you can implement a circuit to detect digital events and record a timestamp, implement high-reliability digital control logic in silicon, or perform redundant safety enforcement and interlocks. Unlike traditional digital control devices, the performance of a CompactRIO digital control system does not decrease as the amount of digital logic increases because of the parallel nature of the RIO FPGA circuitry. Key Features • High-performance digital and counter/timer input modules for CompactRIO embedded system, R Series expansion chassis, or NI CompactDAQ system • Screw terminal, D-Sub, strain relief, high-voltage cable, solder-cup backshell, and other connectivity options • NI CompactRIO Extreme Industrial Certifications and Ratings • NI 9411 module that generates regulated 5 V power for quadrature encoder or other devices • Channel-to-earth ground double-isolation barrier for safety and noise immunity and channel-to-channel isolation Visit ni.com/compactrio or ni.com/compactdaq for up-to-date information on module availability, example programs, application notes, and other developer tools. Typical certifications – Actual specifications vary from product to product. Visit ni.com/certification for details. NI 9401, NI 9411, NI 942x, NI 9435 NEW! North American Hazardous Locations • High- and low-speed 24 V logic (IEC 1131-2), 5 V/TTL, differential/ single-ended inputs, or universal AC/DC inputs up to 250 VAC/VDC • Isolation up to 2,300 Vrms (withstand), up to 250 Vrms (continuous) • Channel-to-channel isolation up to 1,390 Vrms (withstand), up to 250 Vrms (continuous) • Up to 100 ns input rate for ultrahigh- speed digital communication • Up to 500 ns input rate for high-speed control or long-distance digital communication • Internal current limiting and industrial logic thresholds for direct connection to a wide array of industrial switches, encoders, and transducers Compatibility Product CompactRIO NI CompactDAQ Logic Channels Source/Sink I/O Delay Time Signal Levels Isolation Connector Options NI 9401 5 V/TTL 8 Sink/Source 100 ns 5 V D-Sub NI 9411 Differential or 5 V/TTL 6 – 500 ns ±5 to ±24 V D-Sub NI 9421 24 V 8 Sink 100 µs 24 V Screw Terminal, D-Sub NI 9422 24 V 8 Sink/Source 250 µs Up to 60 V (ch-to-ch) Screw Terminal NI 9423 24 V 8 Sink 1 µs 24 V Screw Terminal NI 9425 24 V 32 Sink 7 µs 24 V D-Sub NI 9435 Universal 4 Sink/Source 3 ms ±5 to 250 VDC, 10 to 250 VAC Screw Terminal Table 1. C Series Digital Input and Counter/Timer Module Selection Guide |
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