NI-9218 Getting Started Overview This document explains how to connect to the NI-9218. In this document, the NI-9218 with LEMO and the NI-9218 with DSUB are referred to inclusively as the NI-9218. Note Before you begin, read the NI-9218 Safety, Environmental, and Regulatory Information document on ni.com/manuals...
+30 V. Must use crimp contact LEMO plug (784162-01) to maintain these ratings. Ratings are invalidated if solder version is used. NI-9218 with DSUB Safety Voltages Connect only voltages that are within the following limits: ±30 V Maximum voltage, from any pin to any pinon a single connector...
Safety Guidelines for Hazardous Locations The NI-9218 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.
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NI-9218 Getting Started Caution Substitution of components may impair suitability for Class I, Division 2, or Zone 2. Caution The system must be installed in an enclosure certified for the intended hazardous (classified) location, having a tool secured cover/door, where a minimum protection of at least IP54 is provided.
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.
NI-9218 with LEMO only. Optional sensor excitation. Tie to pin 3. TEDS Class 1 data connection. TEDS Class 2 data connection. Measurement Types The NI-9218 provides built-in support for the following measurement types. ±16 V ■ ±65 mV ■ Full-Bridge ■...
NI-9218 Getting Started NI recommends using the NI-9982 screw-terminal adapter when using built-in measurement types on the NI-9218. The NI-9218 provides additional support for the following measurement types when using a measurement-specific adapter. ±20 mA, requires the NI-9983 ■ ±60 V, requires the NI-9987 ■...
NI-9218 Getting Started SUP+ SUP- VEX+ VEX- NI 9218 You must connect AI- to EX- on the NI 9218. ■ The NI 9218 provides optional 12 V sensor excitation. To use the 12 V ■ excitation, connect a 9 VDC to 30 VDC power supply to Vsup, connect the excitation terminals on your sensor to EX+/EX-, and enable 12 V excitation in your software.
NI-9218 Getting Started Related reference NI 9982 Full-Bridge Connection Pinout ■ IEPE Connections NI 9218 The NI 9218 provides an excitation current for each channel that powers ■ IEPE sensors. AI+ provides DC excitation and AI- provides the excitation return path.
NI-9218 Getting Started NI 9983 Pinout ■ ±60 V Connections NI 9987 NI 9218 Connecting ±60 V signals requires the NI 9987. Related reference NI 9987 Pinout ■ Half-Bridge Connections NI 9986 NI 9218 Connecting half bridges requires the NI 9986.
NI-9218 Getting Started Related reference NI 9986 Pinout ■ Quarter-Bridge Connections NI 9984/9985 NI 9218 Connecting 120 Ω quarter bridges requires the NI 9984. ■ Connecting 350 Ω quarter bridges requires the NI 9985. ■ NI recommends 2 V excitation when using a NI 9984 with 120 Ω quarter bridges and 3.3 V excitation when using the NI 9985 with 350 Ω...
NI 9218 with LEMO The NI 9218 with LEMO provides four pins on the Vsup connector for daisy chaining. NI 9218 Connection Guidelines Make sure that devices you connect to the NI-9218 are compatible with the module specifications. Custom Cabling Guidelines Observe the following guidelines when using the NI 9988 solder cup connector adapter or the LEMO crimp connector (784162-01) to create custom cables.
NI-9218 Getting Started Shield Additional Additional Signals Signals Sensor NI 9988 NI 9218 Opening a Measurement Adapter What to Do 1. Unlock the measurement adapter housing/cover. 2. Slide the measurement adapter housing/cover to access the screw terminals. Mounting the NI 998xD/998xL...
Measurement Adapter Grounding The ground terminals on a measurement adapter are connected to chassis ground when the measurement adapter is connected to the NI-9218 and the NI-9218 is installed in a chassis. Measurement Adapter Pinouts The following sections include pinouts for the NI-9218 measurement adapters.
NI-9218 Getting Started NI 9982 ±65 mV Connection Pinout — — — — — — — — — — — NI-9982F NI-v9982D/9982L Pins 3a and 3b are tied together on the NI 9982. Related reference ±65 mV Connections ■ NI 9982 Full-Bridge Connection Pinout —...
NI-9218 Getting Started Pins 3a and 3b are tied together on the NI 9982. Related reference IEPE Connections ■ NI 9983 Pinout — — — — — — — — — — — NI-9983F NI-9983D/9983L Pins 3a and 3b are tied together on the NI 9983.
NI-9218 Getting Started — — — — — NI-9986F NI-9986D/9986L Pins 3a and 3b are tied together on the NI 9986. Related reference Half-Bridge Connections ■ NI 9987 Pinout — — — — — — — — — — —...
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