National Instruments NI 9472, NI 9474

NI 9472/9474 4 ni.com

and circuits connected to the module are properly

insulated from human contact. You must use the NI9932

connector backshell kit to ensure that the terminals are

not accessible.

Figure1 shows the NI 9932 connector backshell.

Note You can use the NI 9932 connector bac kshell only

with the NI 9472/9474 with screw terminal.

Figure 1. NI 9932 Connector Backshell

Contents

Main Safety Guidelines Safety Guidelines for Hazardous Voltages Page Safety Guidelines for Hazardous Locations Special Conditions for Hazardous Locations Use in Europe Special Conditions for Marine Applications Connecting the NI 9472/9474 The NI 9472/9474 provides connections for eight digital output channels. Figure 2. NI 9472/9474 Terminal and Pin Assignments Page Page Page Increasing Current Drive Wiring for High-Vibration Applications I/O Protection Understanding Short-Circuit-Proof Devices Power Supplies and Overcurrent Conditions Detecting an Overcurrent Condition Resetting Channels After an Overcurrent Condition Sleep Mode Specifications Output Characteristics Page NI 9472 Power Requirements NI 9474 Power Requirements Physical Characteristics Safety NI 9472/9474 with Screw Terminal SafetyVoltages NI 9472 with DSUB Safety Voltages Safety Standards Hazardous Locations Environmental Shock and Vibration Electromagnetic Compatibility CE Compliance Environmental Management Waste Electrical and Electronic Equipment (WEEE) Where to Go for Support RoHS Page 373509E-01 May08