This document explains how to connect to the NI 9401. Before you begin, complete the software and Note hardware installation procedures in your chassis documentation. The guidelines in this document are specific to Note the NI 9401. The other components in the system might not meet the same safety ratings.
CAT III, or CAT IV. Safety Guidelines for Hazardous Locations The NI 9401 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 and Ex nA IIC T4 hazardous locations; and nonhazardous locations only.
Zone 2 hazardous locations, in ambient temperatures of -40 °C ≤ Ta ≤ 70 °C. If you are using the NI 9401 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.
Cable Requirements for EMC Compliance Select and install cables for the NI 9401 in accordance with the following requirements: • Install a clamp-on ferrite bead (782803-01) on the cable that you are connecting to NI 9401. • The clamp-on ferrite bead must be connected to the cable as close to the module as possible.
EMC performance is attained. Preparing the Environment Ensure that the environment in which you are using the NI 9401 meets the following specifications. Operating temperature -40 °C to 70 °C...
DIO1 Configured MOSI DIO2 for Output MISO DIO4 DIO7:4 Configured for Input SPI Device NI 9401 Connecting Digital Devices You can connect several types of digital devices to the NI 9401. 14 | ni.com | NI 9401 Getting Started Guide...
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DIO channels to high impedance for approximately 280 ms. When the channels are in an overcurrent state, the NI 9401 can accept new line direction configuration and output state data but cannot pass valid input data to the software.
(EMC) and product safety. You can obtain the DoC for your product by visiting ni.com/certification. If your product supports calibration, you can obtain the calibration certificate for your product at ni.com/calibration. 18 | ni.com | NI 9401 Getting Started Guide...
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