National Instruments NI-9477 Скачать руководство пользователя страница 10

Figure 2. Increasing the Current to a Device Connected to the NI-9477

NI 9477

DO3

DO1

DO0

DO2

4 A

+
_

COM

1 A

1 A

1 A

1 A

External
Power 
Supply

Device

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 3. Connecting a Flyback Diode

Inductive

Device

+

NI 9477

COM

DO

External
Power
Supply

Flyback

Diode

Where to Go Next

NI Services

Visit 

ni.com/support

 to find support resources including documentation,

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 replacement.
Visit 

ni.com/register

 to register your NI product. Product registration facilitates

technical support and ensures that you receive important information updates from

NI.
NI corporate headquarters is located at 11500 N Mopac Expwy, Austin, TX,

78759-3504, USA.

ni.com

10

NI-9477 Getting Started

© 2022 National Instruments Corporation.

Содержание NI-9477

Страница 1: ...NI 9477 Getting Started 2022 07 06...

Страница 2: ...dous Locations 5 Electromagnetic Compatibility Guidelines 7 Preparing the Environment 7 NI 9477 Pinout 8 Connecting Digital Devices 8 Increasing Current Drive 9 Protecting the Digital Outputs from Fly...

Страница 3: ...ety and EMC ratings for the entire system Safety Guidelines Caution Observe all instructions and cautions in the user documentation Using the product in a manner not specified can damage the product a...

Страница 4: ...uits that have a maximum voltage above the continuous working voltage relative to earth or to other channels or this could damage and defeat the insulation The product can only withstand transients up...

Страница 5: ...parts of equipment circuits powered by regulated low voltage sources and electronics Note Measurement Categories CAT I and CAT O are equivalent These test and measurement circuits are for other circu...

Страница 6: ...Each NI 9477 is marked II 3G and is suitable for use in Zone 2 hazardous locations in ambient temperatures of 40 C Ta 70 C If you are using the NI 9477 in Gas Group IIC hazardous locations you must us...

Страница 7: ...ception and prevent unacceptable performance degradation install and use this product in strict accordance with the instructions in the product documentation Furthermore any changes or modifications t...

Страница 8: ...he device datasheet on ni com manuals for complete specifications NI 9477 Pinout DO16 DO17 DO18 DO19 DO20 DO21 DO22 DO23 COM COM DO24 DO25 DO26 DO27 DO28 DO29 DO30 DO31 DO0 DO1 DO2 DO3 DO4 DO5 DO6 DO7...

Страница 9: ...ered on Ensure that the devices you connect to the NI 9477 are compatible with the output specifications of the NI 9477 Refer to the device datasheet at ni com manuals for output specifications Increa...

Страница 10: ...Power Supply Flyback Diode Where to Go Next NI Services Visit ni com support to find support resources including documentation downloads and troubleshooting and application development self help such...

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