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Related Manuals for National Instruments NI-9477
Summary of Contents for National Instruments NI-9477
- Page 1 NI-9477 Getting Started 2022-07-06...
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Page 2: Table Of Contents
NI-9477 Getting Started Contents Overview..............3 Safety Guidelines. -
Page 3: Overview
Note The guidelines in this document are specific to the NI-9477. The other components in the system might not meet the same safety ratings. Refer to the documentation for each component in the system to determine the safety and EMC ratings for the entire system. - Page 4 NI-9477 Getting Started Channel-to-channel None Channel-to-earth ground Continuous 60 V DC, Measurement Category I Withstand 1,000 V RMS, verified by a 5 s dielectric withstand test Caution Do not connect the product to signals or use for measurements within Measurement Categories II, III, or IV.
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Page 5: Safety Guidelines For Hazardous Locations
Safety Guidelines for Hazardous Locations The NI-9477 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 Gc and Ex nA IIC T4 Gc hazardous locations;... - Page 6 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 use the device in an NI chassis that has been evaluated as Ex nC IIC T4, Ex IIC T4, Ex nA IIC T4, or Ex nL IIC T4 equipment.
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Page 7: Electromagnetic Compatibility Guidelines
Furthermore, any changes or modifications to the product not expressly approved by National Instruments could void your authority to operate it under your local regulatory rules. Special Conditions for Marine Applications Some products are approved for marine (shipboard) applications. -
Page 8: Preparing The Environment
NI-9477 Getting Started Preparing the Environment Ensure that the environment in which you are using the NI-9477 meets the following specifications. Operating temperature (IEC 60068-2-1, IEC 60068-2-2) -40 °C to 70 °C Operating humidity (IEC 60068-2-78) 10% RH to 90% RH, noncondensing... -
Page 9: Connecting Digital Devices
Increasing Current Drive Each channel of the NI-9477 has a continuous output current of 1 A. If you want to increase the output current to a device, you can connect any number of channels together in parallel. -
Page 10: Protecting The Digital Outputs From Flyback Voltages
NI-9477 Getting Started Figure 2. Increasing the Current to a Device Connected to the NI-9477 Device External Power Supply NI 9477 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.