This document explains how to connect to the NI 9477. 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 9477. 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 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 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 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.
EMC performance is attained. Preparing the Environment Ensure that the environment in which you are using the NI 9477 meets the following specifications. Operating temperature -40 °C to 70 °C...
Connecting Digital Devices You can connect a variety of industrial devices, such as solenoids, motors, actuators, relays, and lamps to the NI 9477. You must connect an external power supply to the NI 9477. The power supply provides the current for the output channels.
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Vsup and COM pins is powered on. Ensure that the devices you connect to the NI 9477 are compatible with the output specifications of the NI 9477. Refer to ni.com/manuals...
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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. For example, if you want to drive 4 A of current, connect DO0 through DO3 in parallel, as shown in the following figure.
(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. 16 | ni.com | NI 9477 Getting Started Guide...