NI 9206 User manual

GETTING STARTED GUIDE
NI 9206
16 AI Differential/32 AI Single-Ended, ±200 mV
to ±10 V, 16 Bit, 250 kS/s Aggregate, Fuel-Cell
Measurements

This document explains how to connect to the NI 9206.
Note Before you begin, complete the software and
hardware installation procedures in your chassis
documentation.
Note The guidelines in this document are specific to
the NI 9206. The other components in the system might
not meet the same safety ratings. Refer to the
documentation for each component in the system to
determine the safety and EMC ratings for the entire
system.
Safety Guidelines
Operate the NI 9206 only as described in this document.
Caution This icon denotes a caution, which advises
you to consult documentation where this symbol is
marked.
Caution Do not operate the NI 9206 in a manner not
specified in this document. Product misuse can result in
a hazard. You can compromise the safety protection
2| ni.com | NI 9206 Getting Started Guide

built into the product if the product is damaged in any
way. If the product is damaged, return it to NI for
repair.
Hazardous Voltage This icon denotes a warning
advising you to take precautions to avoid electrical
shock with the NI 9206.
Safety Voltages
Connect only voltages that are within the following limits:
Maximum voltage1
AI, PFI0, and D0 to
COM
±30 V DC
Isolation Voltages
Channel-to-channel None
1The maximum voltage that can be applied or output between AI and COM
without creating a safety hazard.
NI 9206 Getting Started Guide | © National Instruments | 3

Channel-to-earth ground
Continuous
U.S. (UL
61010-1)
600 V DC, Measurement
Category I
Europe (IEC
61010-1)
400 V DC, Measurement
Category I
Withstand 2,500 V PK, verified by a 5 s
dielectric withstand test
Measurement Category I is for measurements performed on
circuits not directly connected to the electrical distribution system
referred to as MAINS voltage. MAINS is a hazardous live
electrical supply system that powers equipment. This category is
for measurements of voltages from specially protected secondary
circuits. Such voltage measurements include signal levels, special
equipment, limited-energy parts of equipment, circuits powered
by regulated low-voltage sources, and electronics.
Caution Do not connect the NI 9206 to signals or use
for measurements within Measurement Categories II,
III, or IV.
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Note Measurement Categories CAT I and CAT O are
equivalent. These test and measurement circuits are for
other circuits not intended for direct connection to the
MAINS building installations of Measurement
Categories CAT II, CAT III, or CAT IV.
Safety Guidelines for Hazardous Voltages
If hazardous voltages are connected to the device, take the
following precautions. A hazardous voltage is a voltage greater
than 42.4 Vpk voltage or 60 VDC to earth ground.
Caution Ensure that hazardous voltage wiring is
performed only by qualified personnel adhering to local
electrical standards.
Caution Do not mix hazardous voltage circuits and
human-accessible circuits on the same module.
Caution Ensure that devices and circuits connected to
the module are properly insulated from human contact.
Caution When module terminals are hazardous
voltage LIVE (>42.4 Vpk/60 VDC), you must ensure
that devices and circuits connected to the module are
properly insulated from human contact. You must use
NI 9206 Getting Started Guide | © National Instruments | 5

the NI 9941 backshell kit to ensure that the terminals
are not accessible.
Caution In addition to attaching the connector
backshell to the NI 9206, you must install the entire
system in a UL Listed, suitably rated NEMA or IP
enclosure for safe use.
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Figure 1. NI 9206 in a Suitably UL Rated NEMA or IP Enclosure
1
2
1. Suitably rated NEMA or IP enclosure that requires tool access
2. NI 9206 with NI 9941 connector backshell installed
Safety Guidelines for Hazardous Locations
The NI 9206 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
Gc and Ex nA IIC T4 Gc hazardous locations; and nonhazardous
NI 9206 Getting Started Guide | © National Instruments | 7

locations only. Follow these guidelines if you are installing the
NI 9206 in a potentially explosive environment. Not following
these guidelines may result in serious injury or death.
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, 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.
Special Conditions for Hazardous Locations Use
in Europe and Internationally
The NI 9206 has been evaluated as Ex nA IIC T4 Gc equipment
under DEMKO 03 ATEX 0324020X and is IECEx UL 14.0089X
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certified. Each NI 9206 is marked II 3G and is suitable for use
in Zone 2 hazardous locations, in ambient temperatures of -40 °C
≤ Ta ≤ 70 °C. If you are using the NI 9206 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.
Caution Transient protection shall be provided that is
set at a level not exceeding 140% of the peak rated
voltage value of 85 V at the supply terminals to the
equipment.
Caution The system shall only be used in an area of
not more than Pollution Degree 2, as defined in
IEC/EN 60664-1.
Caution The system shall be mounted in an
ATEX/IECEx-certified enclosure with a minimum
ingress protection rating of at least IP54 as defined in
IEC/EN 60079-15.
Caution The enclosure must have a door or cover
accessible only by the use of a tool.
NI 9206 Getting Started Guide | © National Instruments | 9

Electromagnetic Compatibility Guidelines
This product was tested and complies with the regulatory
requirements and limits for electromagnetic compatibility (EMC)
stated in the product specifications. These requirements and
limits provide reasonable protection against harmful interference
when the product is operated in the intended operational
electromagnetic environment.
This product is intended for use in industrial locations. However,
harmful interference may occur in some installations, when the
product is connected to a peripheral device or test object, or if the
product is used in residential or commercial areas. To minimize
interference with radio and television reception and prevent
unacceptable performance degradation, install and use this
product in strict accordance with the instructions in the product
documentation.
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.
10 | ni.com | NI 9206 Getting Started Guide

Caution To ensure the specified EMC performance,
operate this product only with shielded cables and
accessories.
Caution To ensure the specified EMC performance,
the length of all I/O cables must be no longer than 30 m
(100 ft).
Special Conditions for Marine Applications
Some products are Lloyd’s Register (LR) Type Approved for
marine (shipboard) applications. To verify Lloyd’s Register
certification for a product, visit ni.com/certification and search
for the LR certificate, or look for the Lloyd’s Register mark on
the product.
Caution In order to meet the EMC requirements for
marine applications, install the product in a shielded
enclosure with shielded and/or filtered power and
input/output ports. In addition, take precautions when
designing, selecting, and installing measurement probes
and cables to ensure that the desired EMC performance
is attained.
NI 9206 Getting Started Guide | © National Instruments | 11

Preparing the Environment
Ensure that the environment in which you are using the NI 9206
meets the following specifications.
Operating temperature
(IEC 60068-2-1, IEC 60068-2-2)
-40 °C to 70 °C
Operating humidity
(IEC 60068-2-78)
10% RH to 90% RH,
noncondensing
Pollution Degree 2
Maximum altitude 2,000 m
Indoor use only.
Note Refer to the device datasheet on ni.com/manuals
for complete specifications.
12 | ni.com | NI 9206 Getting Started Guide

NI 9206 Pinout
AI0
AI1
AI3
AI5
AI7
AI17
AI19
AI21
AI23
DO0
AI2
AI4
AI6
AI16
AI18
AI20
AI22
COM
AI9
AI8
AI10
AI12
AI14
AI24
AI26
AI28
AI30
AISENSE
AI11
AI13
AI15
AI25
AI27
AI29
AI31
PFI0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
NI 9206 Getting Started Guide | © National Instruments | 13

Table 1. Signal Descriptions
Signal Description
AI Analog input signal connection
AISENSE Reference connection for NRSE measurements
COM Common reference connection to isolated ground
DO Digital output signal connection
PFI Programmable function interface, digital input signal
connection
Signals
You can connect single-ended or differential signals to the
NI 9206. Use a differential measurement configuration to attain
more accurate measurements and less noise. The following table
shows the signal pairs that are valid for differential connection
configurations with the NI 9206.
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Table 2. Differential Pairs
Channel AI + AI-
0 AI0 AI8
1 AI1 AI9
2 AI2 AI10
3 AI3 AI11
4 AI4 AI12
5 AI5 AI13
6 AI6 AI14
7 AI7 AI15
16 AI16 AI24
17 AI17 AI25
18 AI18 AI26
NI 9206 Getting Started Guide | © National Instruments | 15

Table 2. Differential Pairs (Continued)
Channel AI + AI-
19 AI19 AI27
20 AI20 AI28
21 AI21 AI29
22 AI22 AI30
23 AI23 AI31
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Connecting Floating Differential Signals
You can connect floating differential signals to the NI 9206.
Figure 2. Connecting Floating Differential Signals to the NI 9206
NI 9206
MUX ADC
PGIA
Vcm
AI0 (CH0+)
AI8 (CH0–)
–
–
AI1 (CH1+)
AI9 (CH1–)
COM
V1
V2+
+
–
–
To connect floating differential signals to the NI 9206, you must
connect the negative signal to COM through a 1 MΩ resistor to
keep the voltage within the maximum working voltage. If the
voltage source is outside the maximum working voltage, the
NI 9206 does not read data accurately.
NI 9206 Getting Started Guide | © National Instruments | 17

Connecting Grounded Differential Signals
You can connect grounded differential signals to the NI 9206.
Figure 3. Connecting Grounded Differential Signals to the NI 9206
NI 9206
MUX ADC
PGIA
Vcm
AI0 (CH0+)
AI8 (CH0–)
AI1 (CH1+)
AI9 (CH1–)
COM
V1
V2
–
–
+
+
In a differential configuration, the NI 9206 rejects the common-
mode noise voltage during the measurement of V1. To connect
grounded differential signals to the NI 9206, you must also
connect the signal reference to COM.
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Connecting RSE Voltage Signals
You can connect referenced single-ended (RSE) signals to the
NI 9206.
Figure 4. Connecting RSE Voltage Signals
NI 9206
MUX
PGIA ADC
V1
V2
COM
AI1
AI0
–
–
+
+
In an RSE configuration, the NI 9206 measures each channel
with respect to COM. To connect RSE signals to the NI 9206,
you must connect the voltage ground signal to COM to keep the
maximum working voltage in the specified range.
Note If you leave COM unconnected, the signals float
outside the working input range of the NI 9206. This
NI 9206 Getting Started Guide | © National Instruments | 19

may result in unreliable measurements because there is
no way to ensure that the input signal is within 10 V of
COM.
Connecting NRSE Voltage Signals
You can connect non-referenced single-ended (NRSE) signals to
the NI 9206.
Figure 5. Connecting an RSE Voltage Signal to the NI 9206
NI 9206
MUX
PGIA ADC
V1
V2
COM
AI1
AISENSE
AI0
+
+
–
–
In an NRSE configuration, the NI 9206 measures each channel
with respect to AISENSE. An NRSE configuration provides
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