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NI 9351 Single Output with External Readback
Connection

NI 9351

Vsup

DO

COM

+

–

DI

Relay

External

Power

Supply

Device

•

Use this diagram for single output with external readback
configurations.

•

Connect a wire from the external monitoring location to a DI
channel to monitor the output value.

NI 9351 Getting Started Guide

  | 

© National Instruments

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25

Summary of Contents for NI 9351

Page 1: ...GETTING STARTED GUIDE NI 9351 4 Ch 0 20 mA 16 bit AI 4 Ch 24 V Sinking DI 4 Ch 24 V Sourcing DO SIL3 Capable...

Page 2: ...nfo Code safetymanual Note Before you begin complete the software and hardware installation procedures in your chassis documentation Note The guidelines in this document are specific to the NI 9351 Th...

Page 3: ...lt into the product if the product is damaged in any way If the product is damaged return it to NI for repair Safety Voltages Connect only voltages that are within the following limits Caution Do not...

Page 4: ...ric 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...

Page 5: ...t Categories CAT II CAT III or CAT IV Safety Guidelines for Hazardous Locations The NI 9351 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...

Page 6: ...IP54 is provided Special Conditions for Hazardous Locations Use in Europe and Internationally The NI 9351 has been evaluated as Ex nA IIC T4 Gc equipment under DEMKO 12 ATEX 1202658X and is IECEx UL...

Page 7: ...minimum ingress protection rating of at least IP54 as defined in IEC EN 60079 15 Caution The enclosure must have a door or cover accessible only by the use of a tool EMC Guidelines This product was te...

Page 8: ...radation install and use this product in strict accordance with the instructions in the product documentation Furthermore any changes or modifications to the product not expressly approved by National...

Page 9: ...losure with shielded and or filtered power and input output ports In addition take precautions when designing selecting and installing measurement probes and cables to ensure that the desired EMC perf...

Page 10: ...Pollution Degree 2 Maximum altitude 5 000 m Indoor use only Note Refer to the device datasheet on ni com manuals for complete specifications 10 ni com NI 9351 Getting Started Guide...

Page 11: ...AI Vsup COM DO1 DO0 AI Vsup AI Vsup AI COM DO3 DO2 COM COM AI COM AI1 AI0 COM DI1 DI0 AI3 AI2 AI COM DI3 DI2 COM 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 NI 9351 Getting St...

Page 12: ...t common reference connection Internally connected to COM AI Vsup Voltage supply connection Not internally connected to Vsup COM Common reference connection DI Digital input signal connection DO Digit...

Page 13: ...NI 9351 LEDs 2 1 0 Table 2 LED Descriptions LED Description Vsup Status 0 Internal Fault 1 I O Fault 2 UserLED0 NI 9351 Getting Started Guide National Instruments 13...

Page 14: ...ule is in Operational Mode and User Program is running Flashing Module powered on Module is not in Operational Mode or User Program is not running Off Module is powered off Internal Fault Red Flashing...

Page 15: ...fault has been detected Off No I O Fault has been detected UserLED0 Red On User configurable Flashing Off Note Refer to the C Series Functional Safety Manual on ni com manuals for detailed informatio...

Page 16: ...You must use the included connector backshell to secure connections to the NI 9351 Figure 1 Connector Backshell Installation 1 2 3 1 Align the connector backshell with the 26 pin spring terminal bloc...

Page 17: ...from the chassis and requires an external power supply to operate Connect the positive lead of the power supply to the supply pin Vsup and the negative lead of the power supply to any common pin COM...

Page 18: ...sup pins are internally connected to each other You can connect only one external voltage supply to the device Caution Do not remove or insert modules if the external power supply connected to the AI...

Page 19: ...n NI 9351 COM DI External Power Supply 3 k Optional Use this diagram for single input and dual input configurations Use one of the following pairs for dual switches DI0 and DI1 DI2 and DI3 NI 9351 Get...

Page 20: ...ly Vsup COM 3 k Optional Use this diagram for single input with test pulse configurations Use test pulses to detect wiring faults on NC normally closed switches Connect the DO pin to the NC normally c...

Page 21: ...NI 9351 Dual Input with Test Pulse Connection NI 9351 External Power Supply Vsup COM DI DO 3 k Optional Device COM DI DO COM 3 k Optional NI 9351 Getting Started Guide National Instruments 21...

Page 22: ...dual switches DI0 and DI1 DI2 and DI3 Use test pulses to detect wiring faults on NC normally closed switches NI 9351 Output Connection NI 9351 Device Vsup DO COM External Power Supply Use this diagram...

Page 23: ...th internal test pulse Dual output with internal test pulse NI 9351 Output with External Test Pulse Connection NI 9351 Vsup DO COM DI Device External Power Supply NI 9351 Getting Started Guide Nationa...

Page 24: ...wire from the external monitoring location to a DI channel to monitor the test pulse Connect the DI channel number that corresponds to the DO channel number Single output with test pulse connections u...

Page 25: ...DO COM DI Relay External Power Supply Device Use this diagram for single output with external readback configurations Connect a wire from the external monitoring location to a DI channel to monitor th...

Page 26: ...log Connections NI 9351 Loop Powered Current Transducer Connection NI 9351 AI0 External Power Supply Loop Powered Current Transducer AI Vsup AI COM AI Vsup 2 A Max 26 ni com NI 9351 Getting Started Gu...

Page 27: ...351 Three Wire Current Transducer Connection NI 9351 AI Vsup AI COM AI COM AI Vsup AI0 External Power Supply Three Wire Current Transducer 2 A Max OUT NI 9351 Getting Started Guide National Instrument...

Page 28: ...NI 9351 Single Input 1oo1 Configuration NI 9351 AI DO Final Element Sensor NI 9351 Dual Input 1oo2 Configuration NI 9351 DO Final Element AI Sensor AI Sensor 28 ni com NI 9351 Getting Started Guide...

Page 29: ...e Input 2oo3 Configuration NI 9351 DO Final Element AI Sensor AI Sensor AI Sensor NI 9351 HIPPS Configuration NI 9351 DO DO AI AI Pressure AI Pressure Pressure NI 9351 Getting Started Guide National I...

Page 30: ...le first open the terminal by pressing the push button Verify that all strands of a stranded wire are securely retained Connect one COM terminal for each DO and each DI connection until all COM termin...

Page 31: ...imum The Vsup must be powered from a SELV source 30 V DC maximum with supplementary overcurrent protection in series 8 A maximum breaking capacity at 120 s The C Series Functional Safety module and as...

Page 32: ...y A pull down resistor reduces input signal response times when channels are driven by sourcing outputs The user is responsible for evaluating and choosing the appropriate resistor and terminal block...

Page 33: ...Time section of the C Series Functional Safety Manual on ni com manuals Protecting the NI 9351 from Flyback Voltages Install an external flyback diode on any digital output connection to inductive or...

Page 34: ...I 9351 Device Vsup DO COM External Power Supply Flyback Diode High Vibration Application Connections If your application is subject to high vibration NI recommends that you use ferrules to terminate s...

Page 35: ...shell Ensure that the supporting fixture for strain relief is stiff and rigidly coupled to the chassis mounting surface Ensure that you do not directionally bias the module when applying strain relief...

Page 36: ...Input Protection The NI 9351 provides overvoltage protection for each AI channel Some overvoltage conditions may cause an internal temperature fault forcing the module into Fail safe Mode Conditions t...

Page 37: ...I website 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 assist...

Page 38: ...refer to the appropriate location Help Patents in your software the patents txt file on your media or the National Instruments Patent Notice at ni com patents You can find information about end user l...

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