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OPERATING INSTRUCTIONS AND SPECIFICATIONS
NI 9201/9221
8-Channel, 12-Bit Analog Input Modules
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ni.com/manuals
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This document describes how to use the National Instruments 9201 and National Instruments 9221 and includes specifications and terminal assignments for the NI 9201/9221. In this document, the NI 9201/9221 with screw terminal and NI 9201/9221 with DSUB are referred to inclusively as the NI 9201/9221. Visit ni.com/info and enter rdsoftwareversion to determine which software you need for the modules you are using. For information about installing, configuring, and programming the system, re
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Safety Guidelines Operate the NI 9201/9221 only as described in these operating instructions. Hot Surface This icon denotes that the component may be hot. Touching this component may result in bodily injury. Safety Guidelines for Hazardous Voltages You can connect hazardous voltages only to the NI 9201/9221 with screw terminal. Do not connect hazardous voltages to the NI 9201/9221 with DSUB. If hazardous voltages are connected to the module, take the following precautions. A hazardous volta
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Caution Make sure that devices and circuits connected to the module are properly insulated from human contact. Caution When module terminals are hazardous voltage LIVE (>42.4 V /60 VDC), you must ensure that devices pk and circuits connected to the module are properly insulated from human contact. You must use the NI 9932 connector backshell kit to ensure that the terminals are not accessible. Figure 1 shows the NI 9932 connector backshell. Note You can use the NI 9932 connector backshell
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Figure 1. NI 9932 Connector Backshell Safety Guidelines for Hazardous Locations The NI 9201/9221 is suitable for use in Class I, Division 2, Groups A, B, C, D, T4 hazardous locations; Class I, Zone 2, AEx nC IIC T4, and Ex nC IIC T4 hazardous locations; and nonhazardous locations only. Follow these guidelines if you are installing the NI 9201/9221 in a potentially explosive environment. Not following these guidelines may result in serious injury or death. © National Instruments Corp. 5 NI
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Caution Do not disconnect I/O-side wires or connectors unless power has been switched off or the area is known to be nonhazardous. Caution Do not remove modules unless power has been switched off or the area is known to be nonhazardous. Caution Substitution of components may impair suitability for Class I, Division 2. Caution For Zone 2 applications, install the system in an enclosure rated to at least IP 54 as defined by IEC 60529 and EN 60529. Caution For Zone 2 applications, install a
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locations. If you are using the NI 9201/9221 in Gas Group IIC hazardous locations or in ambient temperatures of –40 °C ≤ Ta ≤ 70 °C, you must use the device in an NI chassis that has been evaluated as EEx nC IIC T4, Ex nA IIC T4, or Ex nL IIC T4 equipment. Special Conditions for Marine Applications Some modules are Lloyd’s Register (LR) Type Approved for marine applications. To verify Lloyd’s Register certification, visit ni.com/certification and search for the LR certificate, or look for
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Connecting the NI 9201/9221 The NI 9201/9221 provides connections for eight analog input channels. AI0 0 AI1 1 1 COM AI0 14 AI2 2 2 NC NC 15 3 COM AI3 3 AI1 16 4 COM AI2 17 AI4 4 5 NC NC 18 6 COM AI3 19 AI5 5 7 COM AI4 20 8 NC AI6 6 NC 21 9 COM AI5 22 AI7 7 10 COM AI6 23 11 NC NC 8 NC 24 12 COM AI7 25 13 COM COM 9 Figure 2. NI 9201/9221 Terminal and Pin Assignments NI 9201/9221 8 ni.com
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The NI 9201/9221 with screw terminal has a 10-terminal, detachable screw-terminal connector. The NI 9201/9221 with DSUB has a 25-pin DSUB connector. Each channel has an AI terminal or pin to which you can connect a voltage signal. COM, the common terminal or pin, is internally connected to the isolated ground reference of the module. The NI 9201/9221 channels are isolated from other modules in the system. The module protects each channel from overvoltages. Refer to the Specifications sect
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You can connect single-ended voltage signals to the NI 9201/9221. Connect the positive lead of the voltage signal to AI. Connect the ground signal to COM. Refer to Figure 3 for an illustration of connecting a single-ended voltage signal to the NI 9201/9221. AI Voltage Source COM NI 9201/9221 Figure 4. Connecting a Single-Ended Voltage Signal to the NI 9201/9221 Note You must use 2-wire ferrules to create a secure connection when connecting more than one wire to a single terminal on the N
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screw-terminal connector or use the NI 9932 backshell kit to protect the connections. Refer to Figure 5 for an illustration of using ferrules. Refer to Figure 1 for an illustration of the NI 9932 connector backshell. Figure 5. 10-Terminal Detachable Screw-Terminal Connector with Ferrule © National Instruments Corp. 11 NI 9201/9221
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Sleep Mode This module supports a low-power sleep mode. Support for sleep mode at the system level depends on the chassis that the module is plugged into. Refer to the chassis manual for information about support for sleep mode. If the chassis supports sleep mode, refer to the software help for information about enabling sleep mode. Visit ni.com/info and enter cseriesdoc for information about C Series documentation. Typically, when a system is in sleep mode, you cannot communicate with th
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Input Characteristics Number of channels..........................8 analog input channels ADC resolution.................................12 bits Type of ADC.....................................Successive approximation register (SAR) Sample rate (aggregate) Maximum Sample Maximum Rate (R Series Sample Rate Module Expansion Chassis) (All Other Chassis) NI 9201, 475 kS/s 800 kS/s single channel NI 9201, scanning 475 kS/s 500 kS/s NI 9221 475 kS/s 800 kS/s Input range NI 9201.....................
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1 Operating voltage ranges Maximum Voltage, Measurement Voltage, Channel-to-Earth Ground or Channel-to-COM COM-to-Earth Ground Min Typ Max Screw Module (V) (V) (V) Terminal DSUB NI 9201 ±10.3 ±10.53 ±10.8 250 V ±60 VDC rms NI 9221 ±61.4 ±62.50 ±63.8 Overvoltage protection (channel-to-COM) ............................±100 V 1 Refer to the Safety Guidelines section for more information about safe operating voltages. NI 9201/9221 14 ni.com
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NI 9201 accuracy (excludes noise) Percent of Percent of * Reading Range Measurement Conditions (Gain Error) (Offset Error) Calibrated typ (25 °C, ±5 °C) ±0.04% ±0.07% Calibrated max (–40 to 70 ºC) ±0.25% ±0.25% Uncalibrated typ (25 °C, ±5 °C) ±0.26% ±0.46% Uncalibrated max (–40 to 70 ºC) ±0.67% ±1.25% * Range equals 10.53 V © National Instruments Corp. 15 NI 9201/9221
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NI 9221 accuracy (excludes noise) Percent of Percent of * Reading Range Measurement Conditions (Gain Error) (Offset Error) Calibrated typ (25 °C, ±5 °C) ±0.04% ±0.07% Calibrated max (–40 to 70 ºC) ±0.25% ±0.25% Uncalibrated typ (25 °C, ±5 °C) ±0.26% ±0.43% Uncalibrated max (–40 to 70 ºC) ±0.67% ±1.06% * Range equals 62.50 V Stability Gain drift ....................................±34 ppm/°C Offset drift NI 9201 ................................±100 μV/°C NI 9221 ..............................
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Input impedance Resistance...................................1 MΩ Capacitance ................................5 pF Input noise (code-centered) RMS ...........................................0.7 LSB rms Peak-to-peak...............................5 LSB No missing codes..............................12 bits DNL ..................................................–0.9 to 1.5 LSB INL....................................................±1.5 LSB Crosstalk (at 10 kHz)........................–75 dB Settling
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MTBF ...............................................1,485,465 hours at 25 °C; Bellcore Issue 6, Method 1, Case 3, Limited Part Stress Method Note Contact NI for Bellcore MTBF specifications at other temperatures or for MIL-HDBK-217F specifications. Power Requirements Power consumption from chassis Active mode ...............................550 mW max Sleep mode .................................1 mW max Thermal dissipation (at 70 °C) Active mode ...............................600 mW max Slee
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Physical Characteristics If you need to clean the module, wipe it with a dry towel. Screw-terminal wiring ......................12 to 24 AWG copper conductor wire with 10 mm (0.39 in.) of insulation stripped from the end 2 2 Ferrules .............................................0.25 mm to 2.5 mm Torque for screw terminals ...............0.5 to 0.6 N · m (4.4 to 5.3 lb · in.) Weight NI 9201/9221 with screw terminal ....................150 g (5.3 oz) NI 9201/9221 with DSUB..........145 g (5.1
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NI 9201/9221 with Screw Terminal Isolation Voltages Channel-to-channel...........................No isolation between channels Channel-to-earth ground , Continuous .................................250 V rms Measurement Category II Withstand....................................2,300 V , verified by a 5 s rms dielectric withstand test Measurement Category II is for measurements performed on circuits directly connected to the electrical distribution system. This category refers to local-level
