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Before You Begin

Read the NI-9421 Safety, Environmental, and Regulatory Information and

complete the software and hardware installation procedures in your chassis

documentation.

Safety Guidelines

Caution

 Observe all instructions and cautions in the user documentation.

Using the product in a manner not specified can damage the product and

compromise the built-in safety protection.

Attention

 Suivez toutes les instructions et respectez toutes les mises

en garde de la documentation d'utilisation. L'utilisation du produit de

toute autre façon que celle spécifiée risque de l'endommager et de

compromettre la protection de sécurité intégrée.

Safety Guidelines for Hazardous Voltages

If hazardous voltages are connected to the product, take the following precautions.

A hazardous voltage is a voltage greater than:

 30 V RMS, 42.4 V peak, or 60 V DC in DRY LOCATIONS

 16 V RMS, 22.6 V peak, or 35 V DC in WET LOCATIONS

Caution

 Ensure that hazardous voltage wiring is performed only by

qualified personnel adhering to local electrical standards.

Attention

 S'assurer que le câblage à tension dangereuse est effectué par

du personnel qualifié respectant les normes électriques locales.

© National Instruments

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NI-9421 Getting Started

Содержание NI 9421

Страница 1: ...NI 9421 Getting Started 2022 07 06...

Страница 2: ...UB Safety Voltages 5 Safety Guidelines for Hazardous Locations 5 Electromagnetic Compatibility Guidelines 7 Special Conditions for Marine Applications 7 Preparing the Environment 7 Connecting the NI 9...

Страница 3: ...ion du produit de toute autre fa on que celle sp cifi e risque de l endommager et de compromettre la protection de s curit int gr e Safety Guidelines for Hazardous Voltages If hazardous voltages are c...

Страница 4: ...haute tension dangereuse est appliqu e aux bornes du produit vous devez vous assurer que les appareils et les circuits auxquels il est connect sont correctement isol s de tout contact humain Caution Y...

Страница 5: ...by a 5 s dielectric withstand test Safety Guidelines for Hazardous Locations The NI 9421 is suitable for use in hazardous locations and hazardous locations and nonhazardous locations only Follow these...

Страница 6: ...I 9421 is marked 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 9421 in Gas Group IIC hazardous locations you must use the device...

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: ...e You must use 2 wire ferrules to create a secure connection when connecting more than one wire to a single terminal on the NI 9421 with screw terminal or NI 9421 with spring terminal NI 9421 Signals...

Страница 9: ...applies a voltage or drives a current that is in the input OFF range to DI If no device is connected to DI the channel registers as OFF LED Indications Each channel has an LED that indicates the stat...

Страница 10: ...earn 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...

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