National Instruments NI 9218 User manual

NI-9218 Getting
Started
2022-07-06

Contents
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Safety Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
NI-9218 with LEMO Safety Voltages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
NI-9218 with DSUB Safety Voltages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Safety Guidelines for Hazardous Locations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Electromagnetic Compatibility Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Special Conditions for Marine Applications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Preparing the Environment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
NI 9218 Pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Measurement Types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
±16 V Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
±65 mV Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Full-Bridge Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
IEPE Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
±20 mA Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
±60 V Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Half-Bridge Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Quarter-Bridge Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
TEDS Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
TEDS Support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Vsup Daisy Chain Topology. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
NI 9218 Connection Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Custom Cabling Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Opening a Measurement Adapter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Mounting the NI 998xD/998xL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Measurement Adapter Grounding. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Measurement Adapter Pinouts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
NI 9982 ±16 V Connection Pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
NI 9982 ±65 mV Connection Pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
NI 9982 Full-Bridge Connection Pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
NI 9982 IEPE Connection Pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
NI 9983 Pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
NI 9984/9985 Pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
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NI-9218 Getting Started

NI 9986 Pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
NI 9987 Pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Where to Go Next. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
NI Services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
© National Instruments 3
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 and complete the
soware and hardware installation procedures in your chassis
documentation.
Note The guidelines in this document are specific to the NI-9218. 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
Caution Observe all instructions and cautions in the user documentation.
Using the product in a manner not specified can damage the product and
compromise the built-in safety protection.
Attention Suivez toutes les instructions et respectez toutes les mises
en garde de la documentation d'utilisation. L'utilisation du produit de
toute autre façon que celle spécifiée risque de l'endommager et de
compromettre la protection de sécurité intégrée.
NI-9218 with LEMO Safety Voltages
Connect only voltages that are within the following limits:
Maximum voltage, from any pin to any pinon a single connector[1] ±30 V
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NI-9218 Getting Started

Isolation
Channel-to-channel, channel-to-Vsup, channel-to-earth, Vsup-to-earth (up to 5,000 m)[2]
Continuous 60 VDC, Measurement Category I
Withstand 1,000 Vrms, verified by a 5 s dielectric withstand test
Caution Any excitation output voltage to earth ground must remain
below 60 VDC for each channel. To determine excitation output voltage to
earth ground for a channel, add the maximum excitation voltage to the
maximum potential on pin 3. The maximum excitation voltages are 2 V
+3% and 3.3 V +3% for the bridge excitations, 12 V +5% for the +12 V
excitation, and 22 V for the IEPE excitation.
1 The maximum voltage between pin 2 and pin 3 on a single connector is -20 V to
+30 V.
2 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:
Maximum voltage, from any pin to any pinon a single connector[1] ±30 V
Isolation
Channel-to-channel, channel-to-Vsup inputs (up to 5,000 m)
Continuous 60 VDC, Measurement Category I
Withstand 1,000 Vrms, verified by a 5 s dielectric withstand test
Channel-to-earth ground (up to 3,000 m)
Continuous 60 VDC, Measurement Category I
Withstand 1,000 Vrms, verified by a 5 s dielectric withstand test
© National Instruments 5
NI-9218 Getting Started

Channel-to-earth ground (up to 5,000 m)
Continuous 60 VDC, Measurement Category I
Withstand 860 Vrms
Vsup inputs-to-earth ground (up to 5,000 m)
Continuous 60 VDC, Measurement Category I
Withstand 1,000 Vrms, verified by a 5 s dielectric withstand test
Caution Any excitation output voltage to earth ground must remain
below 60 VDC for each channel. To determine excitation output voltage to
earth ground for a channel, add the maximum excitation voltage to the
maximum potential on pin 3. The maximum excitation voltages are 2 V
+3% and 3.3 V +3% for the bridge excitations, 12 V +5% for the +12 V
excitation, and 22 V for the IEPE excitation.
1 The maximum voltage between pin 2 and pin 3 on a single connector is -20 V to
+30 V.
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. Follow these guidelines if you are installing the
NI-9218 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 o or the area is known to be nonhazardous.
Caution Do not remove modules unless power has been switched o or
the area is known to be nonhazardous.
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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.
Special Conditions for Hazardous Locations Use in Europe and
Internationally
The NI 9218 has been evaluated as Ex nA IIC T4 Gc equipment under
DEMKO 12ATEX 1202658X and is IECEx UL 14.0089X certified. Each NI 9218 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 9218 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.
© National Instruments 7
NI-9218 Getting Started

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.
Special Conditions for Marine Applications
Some products are approved for marine (shipboard) applications. To verify marine
approval certification for a product, visit ni.com/product-certifications, search by
model number, and click the appropriate link.
Notice 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.
Preparing the Environment
Ensure that the environment in which you are using the NI 9218 meets the following
specifications.
Operating temperature (IEC 60068-2-1, IEC 60068-2-2) -40 °C to 70 °C
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NI-9218 Getting Started

Operating humidity (IEC 60068-2-30) 10% RH to 90% RH, noncondensing
Pollution Degree 2
Maximum altitude 5,000 m
Indoor use only.
Note Refer to the NI-9218 Specifications on ni.com/manuals for
complete specifications.
NI 9218 Pinout
5
4
3
2
1
9
8
7
6
V–+V
5
4
3
2
1
9
8
7
6
4
5
1
8
3 2
10 9
6 7
V+
V-
V+
V-
4
5
1
8
3 2
10 9
6 7
4
5
1
8
3 2
10 9
6 7
V+
V-
V+
V-
4
5
1
8
3 2
10 9
6 7
Mode Pin
1 2 3 4 5 6 7 8 9 10 [1]
±16 V EX+ — AI-, EX- — — AI+ — — — —
±65 mV EX+ [2] —EX- [2] — — AI+ AI- [3] — — —
Full-Bridge EX+ [2] —EX- [2] RS+ RS- AI+ AI- SC SC —
© National Instruments 9
NI-9218 Getting Started

Mode Pin
1 2 3 4 5 6 7 8 9 10 [1]
IEPE — AI+ AI- — — — — — — —
TEDS — T+ [4] T- — — — — — — T+ [5]
Table 1. Signals by Measurement Type
Signal Description
AI+ Positive analog input signal connection
AI- Negative analog input signal connection
EX+ Positive sensor excitation connection
EX- Negative sensor excitation connection
RS+ Positive remote sensing connection
RS- Negative remote sensing connection
SC Shunt calibration connection
T+ TEDS data connection
T- TEDS return connection
Table 2. Signal Descriptions
1 NI-9218 with LEMO only.
2 Optional sensor excitation.
3 Tie to pin 3.
4 TEDS Class 1 data connection.
5 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
■IEPE
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NI-9218 Getting Started