NI 9474 Datasheet - National Instruments

1 DATASHEETNI 94748 DO, 5 V to 30 V, Sourcing, 1 s Screw-terminal or spring-terminal connectivity CompactDAQ counter compatibility 250 Vrms, CAT II, channel-to-earth isolationThe NI 9474 is a digital output module for CompactDAQ and CompactRIO systems. Eachchannel is compatible with 5 V to 30 V signals and features 2,300 Vrms of transientovervoltage protection between the output channels and the backplane. Each channel also hasan LED that indicates the state of that channel. With the NI 9474, you can connect directly to avariety of industrial devices such as motors, actuators, and are two connector options for the NI 9474 a 10-position screw-terminal connector or a10-position spring-terminal ContentsRequiredAccessories NI 9474 NI 9474 Getting Started Guide NI 9927 Backshell Connector Kit (screw terminal) NI 9981 Backshell Connector Kit (spring terminal)

2 Screw-Terminal, 25-Pin DSUB, Spring-Terminal750 mA/ch100 s830 VSourcingOutputNI 9472 Screw-Terminal,Spring-Terminal1 A/ch1 s830 VSourcingOutputNI 947425-Pin DSUB1 A/ch1 s860 VSourcingOutputNI 9475250 mA/ch500 s3236 VSourcingOutputNI 94761 A/ch(20 A/module)8 s32 SinkingOutputNI A/ch7 s16 SinkingOutputNI 947837-Pin DSUB37-Pin DSUB37-Pin DSUB60 V60 VConnectivityContinuous UpdateChannelsMaximumModuleProductCurren tRateOutputTypeNameScrew-Terminal,37-Pin DSUB100 mA/ch7 s1630 VDCS ourcingOutputNI 9375C SERIES DIGITAL OUTPUT MODULE COMPARISONNI C Series OverviewNI provides more than 100 C Series modules for measurement, control, and communicationapplications.

3 C Series modules can connect to any sensor or bus and allow for high-accuracymeasurements that meet the demands of advanced data acquisition and control applications. Measurement-specific signal conditioning that connects to an array of sensors and signals Isolation options such as bank-to-bank, channel-to-channel, and channel-to-earth ground -40 C to 70 C temperature range to meet a variety of application and environmentalneeds Hot-swappableThe majority of C Series modules are supported in both CompactRIO and CompactDAQplatforms and you can move modules from one platform to the other with no | | NI 9474 DatasheetCompactRIOC ompactRIO combines an open-embedded architecturewith small size, extreme ruggedness.

4 And C Seriesmodules in a platform powered by the NI LabVIEW reconfigurable I/O (RIO) architecture. Each systemcontains an FPGA for custom timing, triggering, andprocessing with a wide array of available modular I/O tomeet any embedded application is a portable, rugged data acquisition platformthat integrates connectivity, data acquisition, and signalconditioning into modular I/O for directly interfacing to anysensor or signal. Using CompactDAQ with LabVIEW, youcan easily customize how you acquire, analyze, visualize,and manage your measurement Professional Development System for Windows Use advanced software tools for large project development Generate code automatically using DAQ Assistant and InstrumentI/O Assistant Use advanced measurement analysis and digital signal processing Take advantage of open connectivity with DLLs, ActiveX,and.

5 NET objects Build DLLs, executables, and MSI installersNI LabVIEW FPGA Module Design FPGA applications for NI RIO hardware Program with the same graphical environment used for desktop andreal-time applications Execute control algorithms with loop rates up to 300 MHz Implement custom timing and triggering logic, digital protocols, andDSP algorithms Incorporate existing HDL code and third-party IP including Xilinx IPgenerator functions Purchase as part of the LabVIEW Embedded Control and MonitoringSuiteNI 9474 Datasheet | National Instruments | 3NI LabVIEW Real-Time Module Design deterministic real-time applications with LabVIEW graphical programming Download to dedicated NI or third-party hardware for reliableexecution and a wide selection of I/O Take advantage of built-in PID control, signal processing.

6 Andanalysis functions Automatically take advantage of multicore CPUs or setprocessor affinity manually Take advantage of real-time OS, development and debuggingsupport, and board support Purchase individually or as part of a LabVIEW suiteNI 9474 CircuitryCOMDONI 9474 VsupDevice+ The DO channels are internally referenced to COM. The NI 9474 has sourcing outputs. Sourcing outputs drive current from Vsup to DO whenthe channel is For more information about sourcing outputs, visit and enter theInfo Code 9474 SpecificationsThe following specifications are typical for the range -40 C to 70 C unless otherwise voltages are relative to COM unless otherwise Do not operate the NI 9474 in a manner not specified in this misuse can result in a hazard.

7 You can compromise the safety protectionbuilt into the product if the product is damaged in any way. If the product isdamaged, return it to NI for | | NI 9474 DatasheetOutput CharacteristicsNumber of channels8 digital output channelsOutput typeSourcingPower-on output stateChannels offExternal power supply voltage range(Vsup)5 VDC to 30 VDCO utput impedance (R0) Continuous output current (I0), per A maximumOutput voltage (V0)Vsup - (I0 R0)I/O protectionVoltage30 VDC maximumReversed voltageNoneShort circuit trip time10 s at 14 ATable 1. Short-circuit BehaviorCurrentChannel BehaviorModule Protection Less than 1 AChannel does not tripModule is not damaged1 A to 2 A for 100 ms maximum,repeatable after 1 s 1 Channel does not tripModule is not damaged2 A to AChannel does not tripModule may be A to 14 AChannel may tripModule may be damagedGreater than 14 AChannel tripsModule is not damaged1 One channel at a 9474 Datasheet | National Instruments | 5 Figure 1.

8 Short-circuit BehaviorChannelCurrent100 ms1 s2 A1 A1 A2 AD0xD0y100 ms1 sTimeOutput delay time (full load)1 s maximumMTBF479,889 hours at 25 C; Bellcore Issue 2,Method 1, Case 3, Limited Part Stress MethodPower RequirementsPower consumption from chassisActive mode660 mW maximumSleep mW maximumThermal dissipation (at 70 C)Active W maximumSleep mW maximum6 | | NI 9474 DatasheetPhysical CharacteristicsIf you need to clean the module, wipe it with a dry For two-dimensional drawings and three-dimensional models of the C Seriesmodule and connectors, visit and search by module mm2 to mm2 (26 AWG to 14 AWG)copper conductor wireWire strip length13 mm ( in.)

9 Of insulation stripped fromthe endTemperature rating90 C minimumTorque for screw N m to N m( lb in. to lb in.)Wires per screw terminalOne wire per screw terminal; two wires perscrew terminal using a 2-wire mm2 to mm2 Spring-terminal mm2 to mm2 (30 AWG to 12 AWG)copper conductor wireWire strip length10 mm ( in.) of insulation stripped fromthe endTemperature rating90 C minimumWires per spring terminalOne wire per spring terminal; two wires perspring terminal using a 2-wire mm2 to mm2 Connector securementSecurement typeScrew flanges providedTorque for screw N m ( lb in.)

10 WeightNI 9474 with screw terminal150 g ( oz)NI 9474 with spring terminal139 g ( oz)Safety VoltagesConnect only voltages that are within the following VDC maximumNI 9474 Datasheet | National Instruments | 7 IsolationChannel-to-channelNoneChannel-t o-earth groundContinuous250 Vrms, Measurement Category IIWithstand2,300 Vrms, verified by a 5 s dielectricwithstand testMeasurement Category II is for measurements performed on circuits directly connected to theelectrical distribution system. This category refers to local-level electrical distribution, such asthat provided by a standard wall outlet, for example, 115 V for or 230 V for Do not connect the NI 9474 to signals or use for measurements withinMeasurement Categories III or (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.