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Protecting the Digital Outputs from Flyback Voltages

If the channel is switching an inductive or energy-storing device such as a solenoid,

motor, or relay, and the device does not have flyback protection, install an external

flyback diode.

Figure 2. Connecting a Flyback Diode

NI 9375

External

Power

Supply

+

DO COM

V

sup

Inductive 

Device

DO

Flyback 
Diode

Connecting to a Spring-Terminal Connector

What to Use

 NI 9375 spring-terminal connector

 0.08 mm

2

 to 1.0 mm

2

 (28 AWG to 18 AWG) copper conductor wire with 7 mm

(0.28 in.) of insulation stripped from the end

Flathead screwdriver with a 2.3 mm x 1.0 mm (0.09 in. x 0.04 in.) blade,

included with the NI 9375

What to Do

Complete the following steps to connect wires to the spring-terminal connector.

1

2

3

© National Instruments

9

NI-9375 Getting Started

Содержание NI 9375

Страница 1: ...NI 9375 Getting Started 2022 07 06...

Страница 2: ...ines 5 Special Conditions for Marine Applications 6 Preparing the Environment 6 NI 9375 Pinout 6 Sourcing Output Connections 7 Connecting Digital Devices 8 Protecting the Digital Outputs from Flyback...

Страница 3: ...ch component in the system to determine the safety and EMC ratings for the entire system Safety Guidelines Caution Observe all instructions and cautions in the user documentation Using the product in...

Страница 4: ...are installing the NI 9375 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 po...

Страница 5: ...than Pollution Degree 2 as defined in IEC EN 60664 1 Caution The system shall be mounted in an ATEX IECEx certified enclosure with a minimum ingress protection rating of at least IP54 as defined in I...

Страница 6: ...arch by model number and click the appropriate link Notice In order to meet the EMC requirements for marine applications install the product in a shielded enclosure with shielded and or filtered power...

Страница 7: ...I15 DO8 DO10 DO12 DO14 Vsup 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 27 28 29 30 31 32 33 34 35 36 Signal Description DI Digital input signal connection DI COM Common refer...

Страница 8: ...ower Supply Caution Do not install or remove C Series modules from your system if any external power supplies connected to the Vsup and COM pins are powered on Attention Ne pas installer ou retirer le...

Страница 9: ...r Supply DO COM Vsup Inductive Device DO Flyback Diode Connecting to a Spring Terminal Connector What to Use NI 9375 spring terminal connector 0 08 mm2 to 1 0 mm2 28 AWG to 18 AWG copper conductor wir...

Страница 10: ...that protects it from overcurrents resulting from a short circuit or faulty loads Notice Overvoltage and reverse bias voltage conditions can damage the NI 9375 Check the voltage specifications for al...

Страница 11: ...ion downloads and troubleshooting and application development self help such as tutorials and examples Visit ni com services to learn about NI service offerings such as calibration options repair and...

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