OPERATING INSTRUCTIONS AND SPECIFICATIONS NI 9426 32-Channel, 24 V, Sourcing Digital Input Module Français Deutsch ni.com/manuals This document describes how to use the National Instruments 9426 and includes specifications and pin assignments for the NI 9426. Visit ni.com/info and enter rdsoftwareversion to determine which software you need for the modules you are using. For information about installing, configuring, and programming the system, refer to the system documentation. Visit ni.com/info and enter cseriesdoc for information about C Series documentation. Note The safety guidelines and specifications in this document are specific to the NI 9426. The other components in the system might not meet the same safety ratings and specifications. Refer to the documentation for each component in the system to determine the safety ratings and specifications for the entire system. Safety Guidelines Operate the NI 9426 only as described in these operating instructions. This icon denotes that the component may be hot. Touching this component may result in bodily injury. Hot Surface NI 9426 Operating Instructions and Specifications 2 ni.com Safety Guidelines for Hazardous Voltages If hazardous voltages are connected to the module, take the following precautions. A hazardous voltage is a voltage greater than 42.4 Vpk or 60 VDC to earth ground. Ensure that hazardous voltage wiring is performed only by qualified personnel adhering to local electrical standards. Caution Caution Do not mix hazardous voltage circuits and human-accessible circuits on the same module. Make sure that devices and circuits connected to the module are properly insulated from human contact. Caution When module terminals are hazardous voltage LIVE (>42.4 Vpk/60 VDC), you must ensure that devices and circuits connected to the module are properly insulated from human contact. Caution Safety Guidelines for Hazardous Locations The NI 9426 is suitable for use in Class I, Division 2, Groups A, B, C, D, T4 hazardous locations; Class I, Zone 2, AEx nA IIC T4, and © National Instruments Corp. 3 NI 9426 Operating Instructions and Specifications Ex nA IIC T4 hazardous locations; and nonhazardous locations only. Follow these guidelines if you are installing the NI 9426 in a potentially explosive environment. Not following these guidelines may result in serious injury or death. Caution Do not disconnect I/O-side wires or connectors unless power has been switched off or the area is known to be nonhazardous. Do not remove modules unless power has been switched off or the area is known to be nonhazardous. Caution Substitution of components may impair suitability for Class I, Division 2. Caution For Zone 2 applications, install the system in an enclosure rated to at least IP 54 as defined by IEC 60529 and EN 60529. Caution For Zone 2 applications, install a protection device that prevents the Vsup voltage from exceeding 42 V if there is a transient overvoltage condition. Caution NI 9426 Operating Instructions and Specifications 4 ni.com Special Conditions for Hazardous Locations Use in Europe This equipment has been evaluated as Ex nA IIC T4 equipment under DEMKO Certificate No. 07 ATEX 0626664X. Each module is marked II 3G and is suitable for use in Zone 2 hazardous locations. If you are using the NI 9426 in Gas Group IIC hazardous locations or in ambient temperatures of –40 °C ≤ Ta ≤ 70 °C, you must use the device in an NI chassis that has been evaluated as EEx nC IIC T4, Ex nA IIC T4, or Ex nL IIC T4 equipment. Special Conditions for Marine Applications Some modules are Lloyd’s Register (LR) Type Approved for marine applications. To verify Lloyd’s Register certification, visit ni.com/certification and search for the LR certificate, or look for the Lloyd’s Register mark on the module. To meet radio frequency emission requirements for marine applications, use shielded cables and install the system in a metal enclosure. Suppression ferrites must be installed on power supply inputs near power entries to modules and controllers. Power supply and module cables must be separated on opposite sides of the enclosure and must enter and exit through opposing enclosure walls. Caution © National Instruments Corp. 5 NI 9426 Operating Instructions and Specifications Connecting the NI 9426 The NI 9426 has a 37-pin DSUB connector that provides connections for 32 simultaneously-sampled digital input channels. DI16 DI17 DI18 DI19 DI20 DI21 DI22 DI23 Vsup Vsup DI24 DI25 DI26 DI27 DI28 DI29 DI30 DI31 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 DI0 DI1 DI2 DI3 DI4 DI5 DI6 DI7 Vsup Vsup DI8 DI9 DI10 DI11 DI12 DI13 DI14 DI15 NC Figure 1. NI 9426 Pin Assignments NI 9426 Operating Instructions and Specifications 6 ni.com Each channel has a DI pin to which you can connect a digital input signal. The NI 9426 has four supply pins, Vsup, that are internally connected to the isolated reference of the module. The NI 9426 has sourcing inputs, meaning the DI pin sources current from Vsup to the sinking output device. The NI 9426 internally limits current signals connected to DI. For more information about input current levels, refer to the Specifications section. You can connect 2-, 3-, and 4-wire sinking-output devices to the NI 9426. A sinking-output device provides a path from the DI pin to a voltage below Vsup. An example of a sinking-output device is an open collector NPN. Connect the sinking-output device to the DI pin of the NI 9426. Connect the positive power supply lead of the external device to the Vsup pin. Refer to Figure 2 for an illustration of connecting a device to the NI 9426. © National Instruments Corp. 7 NI 9426 Operating Instructions and Specifications Vsup External + Power Supply _ DI Sinking-Output Device NI 9426 Figure 2. Connecting a Device to the NI 9426 (Three-Wire Device Shown) The NI 9426 channel registers as ON when the sinking-output device drives the input below Vsup and meets the input ON range. The channel registers as OFF when the device does not drive the input low and is in the input OFF range. If no device is connected to the DI pin, the channel registers as OFF. Refer to the Specifications section for more information about the ON and OFF states. NI 9426 Operating Instructions and Specifications 8 ni.com Sleep Mode This module supports a low-power sleep mode. Support for sleep mode at the system level depends on the chassis that the module is plugged into. Refer to the chassis manual for information about support for sleep mode. If the chassis supports sleep mode, refer to the software help for information about enabling sleep mode. Visit ni.com/info and enter cseriesdoc for information about C Series documentation. Typically, when a system is in sleep mode, you cannot communicate with the modules. In sleep mode, the system consumes minimal power and may dissipate less heat than it does in normal mode. Refer to the Specifications section for more information about power consumption and thermal dissipation. Specifications The following specifications are typical for the range –40 to 70 °C unless otherwise noted. All voltages are relative to Vsup unless otherwise noted. Input Characteristics Number of channels.......................... 32 digital input channels © National Instruments Corp. 9 NI 9426 Operating Instructions and Specifications Input type .......................................... Sourcing Digital logic levels OFF state Input voltage1 ....................... ≥ (Vsup – 5 V) Input current......................... ≤150 μA from DI pin ON state Input voltage1 ....................... ≤ (Vsup – 10 V) Input current......................... ≥330 μA from DI pin Hysteresis Input voltage ........................ 1.9 V min Input current......................... 65 μA min Input impedance................................ 30 kΩ ±5% I/O protection (Vsup-to-channel) Input voltage............................... 30 V max Reverse-biased voltage ............... –30 V max 1 Vsup is the external power supply voltage. NI 9426 Operating Instructions and Specifications 10 ni.com Hold time1 ......................................... 0 s min Setup time2 ........................................ 1 μs min Update/transfer time3 ........................ 7 μs max MTBF ............................................... 955,723 hours at 25 °C; Bellcore Issue 2, Method 1, Case 3, Limited Part Stress Method Note Contact NI for Bellcore MTBF specifications at other temperatures or for MIL-HDBK-217F specifications. 1 Hold time is the amount of time input signals must be stable after initiating a read from the module. 2 Setup time is the amount of time input signals must be stable before reading from the module. 3 The update/transfer time is valid when the module is used in a CompactRIO system. When used in other systems, driver software and system latencies impact this time. © National Instruments Corp. 11 NI 9426 Operating Instructions and Specifications Power Requirements Power consumption from chassis Active mode ............................... 615 mW max Sleep mode1 ................................ 5 mW max Thermal dissipation (at 70 °C) Active mode ............................... 1.35 W max Sleep mode ................................. 1.16 W max Physical Characteristics If you need to clean the module, wipe it with a dry towel. Weight............................................... 147 g (5.2 oz) Safety Safety Voltages Connect only voltages that are within the following limits. Vsup-to-channel ................................. 30 VDC max 1 The external power supply may power the module during sleep mode. NI 9426 Operating Instructions and Specifications 12 ni.com Isolation Channel-to-channel .................... None Channel-to-earth ground Continuous ........................... 60 VDC, Measurement Category I Withstand ............................. 1,000 Vrms, verified by a 5 s dielectric withstand test Measurement Category I is for measurements performed on circuits not directly connected to the electrical distribution system referred to as MAINS voltage. MAINS is a hazardous live electrical supply system that powers equipment. This category is for measurements of voltages from specially protected secondary circuits. Such voltage measurements include signal levels, special equipment, limited-energy parts of equipment, circuits powered by regulated low-voltage sources, and electronics. Do not connect the NI 9426 to signals or use for measurements within Measurement Categories II, III, or IV. Caution © National Instruments Corp. 13 NI 9426 Operating Instructions and Specifications Safety Standards This product is designed to meet the requirements of the following standards of safety for electrical equipment for measurement, control, and laboratory use: • IEC 61010-1, EN 61010-1 • UL 61010-1, CSA 61010-1 Note For UL and other safety certifications, refer to the product label or visit ni.com/certification, search by module number or product line, and click the appropriate link in the Certification column. Hazardous Locations U.S. (UL) .......................................... Class I, Division 2, Groups A, B, C, D, T4; Class I, Zone 2, AEx nA IIC T4 Canada (C-UL) ................................. Class I, Division 2, Groups A, B, C, D, T4; Class I, Zone 2, Ex nA IIC T4 Europe (DEMKO)............................. Ex nA IIC T4 NI 9426 Operating Instructions and Specifications 14 ni.com Environmental National Instruments C Series modules are intended for indoor use only but may be used outdoors if installed in a suitable enclosure. Refer to the manual for the chassis you are using for more information about meeting these specifications. Operating temperature (IEC 60068-2-1, IEC 60068-2-2) ..... –40 to 70 °C Storage temperature (IEC 60068-2-1, IEC 60068-2-2) ..... –40 to 85 °C Ingress protection.............................. IP 40 Operating humidity (IEC 60068-2-56).............................. 10 to 90% RH, noncondensing Storage humidity (IEC 60068-2-56).............................. 5 to 95% RH, noncondensing Maximum altitude............................. 2,000 m Pollution Degree (IEC 60664) .......... 2 © National Instruments Corp. 15 NI 9426 Operating Instructions and Specifications Shock and Vibration To meet these specifications, you must panel mount the system. Operating vibration Random (IEC 60068-2-64)......... 5 grms, 10 to 500 Hz Sinusoidal (IEC 60068-2-6) ....... 5 g, 10 to 500 Hz Operating shock (IEC 60068-2-27).............................. 30 g, 11 ms half sine, 50 g, 3 ms half sine, 18 shocks at 6 orientations Electromagnetic Compatibility This product is designed to meet the requirements of the following standards of EMC for electrical equipment for measurement, control, and laboratory use: • EN 61326 EMC requirements; Industrial Immunity • EN 55011 Emissions; Group 1, Class A • CE, C-Tick, ICES, and FCC Part 15 Emissions; Class A Note For EMC compliance, operate this device with shielded cabling. NI 9426 Operating Instructions and Specifications 16 ni.com CE Compliance This product meets the essential requirements of applicable European directives, as amended for CE markings, as follows: • 2006/95/EC; Low-Voltage Directive (safety) • 2004/108/EC; Electromagnetic Compatibility Directive (EMC) Note Refer to the Declaration of Conformity (DoC) for this product for any additional regulatory compliance information. To obtain the DoC for this product, visit ni.com/certification, search by module number or product line, and click the appropriate link in the Certification column. Environmental Management National Instruments is committed to designing and manufacturing products in an environmentally responsible manner. NI recognizes that eliminating certain hazardous substances from our products is beneficial not only to the environment but also to NI customers. © National Instruments Corp. 17 NI 9426 Operating Instructions and Specifications For additional environmental information, refer to the NI and the Environment Web page at ni.com/environment. This page contains the environmental regulations and directives with which NI complies, as well as other environmental information not included in this document. Waste Electrical and Electronic Equipment (WEEE) EU Customers At the end of their life cycle, all products must be sent to a WEEE recycling center. For more information about WEEE recycling centers and National Instruments WEEE initiatives, visit ni.com/ environment/weee.htm. ⬉ᄤֵᙃѻક∵ᶧࠊㅵ⧚ࡲ⊩ ˄Ё RoHS˅ Ёᅶ᠋ National Instruments ヺড়Ё⬉ᄤֵᙃ ѻકЁ䰤ࠊՓ⫼ᶤѯ᳝ᆇ⠽䋼ᣛҸ (RoHS)DŽ݇Ѣ National Instruments Ё RoHS ড়㾘ᗻֵᙃˈ䇋ⱏᔩ ni.com/environment/rohs_chinaDŽ (For information about China RoHS compliance, go to ni.com/ environment/rohs_china.) NI 9426 Operating Instructions and Specifications 18 ni.com Where to Go for Support The National Instruments Web site is your complete resource for technical support. At ni.com/support you have access to everything from troubleshooting and application development self-help resources to email and phone assistance from NI Application Engineers. National Instruments corporate headquarters is located at 11500 North Mopac Expressway, Austin, Texas, 78759-3504. National Instruments also has offices located around the world to help address your support needs. 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