NI C, 9215 Getting Started Manual

GETTING STARTED GUIDE

NI 9215

±10 V, 100 kS/s/ch, 16-Bit, Simultaneous Input,
4-Channel C Series Voltage Input Module

This document explains how to connect to the NI 9215. In this
document, the NI 9215 with screw terminal, NI 9215 with spring
terminal, and NI 9215 with BNC are referred to inclusively as the
NI 9215.

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 9215. 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 9215 only as described in this document.

Caution Do not operate the NI 9215 in a manner not

specified in this document. Product misuse can result in
a hazard. You can compromise the safety protection
built into the product if the product is damaged in any

2 | ni.com | NI 9215 Getting Started Guide

way. If the product is damaged, return it to NI for
repair.

NI 9215 with Screw Terminal and NI 9215 with Spring Terminal Safety Voltages

Connect only voltages that are within the following limits.

Channel-to-COM ±30 V maximum

Isolation

Channel-to-channel None

Channel-to-earth ground

Continuous 250 Vrms,

Measurement Category II

Withstand 2,300 Vrms, verified by a 5 s

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 electrical distribution, such as
that provided by a standard wall outlet, for example, 115 V for
U.S. or 230 V for Europe.

NI 9215 Getting Started Guide | © National Instruments | 3

Caution Do not connect the NI 9215 to signals or use

for measurements within Measurement Categories III
or IV.

NI 9215 with BNC Safety Voltages

Connect only voltages that are within the following limits.

AI+-to-AI- ±30 V maximum

Isolation

Channel-to-channel None

Channel-to-earth ground

Continuous 60 VDC,

Measurement Category I

Withstand 1,500 Vrms, 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

4 | ni.com | NI 9215 Getting Started Guide

equipment, limited-energy parts of equipment, circuits powered
by regulated low-voltage sources, and electronics.

Note Measurement Categories CAT I and CAT O are

equivalent. These test and measurement circuits are not
intended for direct connection to the MAINS building
installations of Measurement Categories CAT II,
CAT III, or CAT IV.

Caution Do not connect the NI 9215 to signals or use

for measurements within Measurement Categories II,
III, or IV.

Safety Guidelines for Hazardous Voltages

You can connect hazardous voltages only to the NI 9215 with
screw terminal and the NI 9215 with spring terminal. Do not
connect hazardous voltages to the NI 9215 with BNC.

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 V DC to earth ground.

Caution Ensure that hazardous voltage wiring is

performed only by qualified personnel adhering to local
electrical standards.

NI 9215 Getting Started Guide | © National Instruments | 5

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 V DC), you must ensure
that devices and circuits connected to the module are
properly insulated from human contact. You must use
the NI 9927 connector backshell kit with the NI 9215
with screw terminal and the NI 9981 connector
backshell kit with the NI 9215 with spring terminal to
ensure that the terminals are not accessible.

Safety Guidelines for Hazardous Locations

The NI 9215 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 9215 in a potentially explosive environment. Not following
these guidelines may result in serious injury or death.

6 | ni.com | NI 9215 Getting Started Guide

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 Division 2 and Zone 2 applications,

install the system in an enclosure rated to at least IP54
as defined by IEC/EN 60079-15.

Caution For Division 2 and Zone 2 applications,

connected signals must be within the following limits.

Capacitance 0.2 µF maximum

Special Conditions for Hazardous Locations Use in Europe and Internationally

The NI 9215 has been evaluated as Ex nA IIC T4 Gc equipment
under DEMKO 03 ATEX 0324020X and is IECEx UL 14.0089X
certified. Each NI 9215 is marked II 3G and is suitable for use

NI 9215 Getting Started Guide | © National Instruments | 7

in Zone 2 hazardous locations, in ambient temperatures of -40 °C
≤ Ta ≤ 70 °C. If you are using the NI 9215 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 You must make sure that transient

disturbances do not exceed 140% of the rated voltage.

Caution The system shall only be used in an area of

not more than Pollution Degree 2, as defined in
IEC 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.

8 | ni.com | NI 9215 Getting Started Guide

Safety Compliance and Hazardous Locations Standards

This product is designed to meet the requirements of the
following electrical equipment safety standards for measurement,
control, and laboratory use:

• IEC 61010-1, EN 61010-1

• UL 61010-1, CSA C22.2 No. 61010-1

• EN 60079-0, EN 60079-15

• IEC 60079-0: Ed 6, IEC 60079-15; Ed 4

• UL 60079-0; Ed 6, UL 60079-15; Ed 4

• CSA C22.2 No. 60079-0, CSA C22.2 No. 60079-15

Note For UL and other safety certifications, refer to

the product label or the Product Certifications and

Declarations section.

NI 9215 Getting Started Guide | © National Instruments | 9

CE Compliance

This product meets the essential requirements of applicable
European Directives, as follows:

• 2014/35/EU; Low-Voltage Directive (safety)

• 2014/30/EU; Electromagnetic Compatibility Directive
(EMC)

• 2014/34/EU; Potentially Explosive Atmospheres (ATEX)

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

10 | ni.com | NI 9215 Getting Started Guide

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.

Caution To ensure the specified EMC performance,

operate this product only with shielded cables and
accessories.

Caution Electrostatic Discharge (ESD) can damage

the NI 9215. To prevent damage, use industry-standard
ESD prevention measures during installation,
maintenance, and operation.

Special Conditions for Marine Applications

Some models are approved for marine (shipboard) applications.
To verify marine approval certification for a model, visit ni.com/

product-certifications, search by model number, and click the

appropriate link.

NI 9215 Getting Started Guide | © National Instruments | 11

Notice In order to meet the EMC requirements for

marine applications, install the model 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.

Physical Characteristics

If you need to clean the module, wipe it with a dry towel.

Tip For two-dimensional drawings and three-

dimensional models of the C Series module and
connectors, visit ni.com/dimensions and search by
module number.

Screw-terminal wiring

Gauge 0.2 mm2 to 2.5 mm2 (26 AWG

to 14 AWG) copper conductor
wire

Wire strip length 13 mm (0.51 in.)

12 | ni.com | NI 9215 Getting Started Guide

Temperature rating 90 °C minimum

Torque for screw
terminals

Wires per screw
terminal

0.5 N · m to 0.6 N · m
(4.4 lb · in. to 5.3 lb · in.)

One wire per screw terminal;
two wires per screw terminal
using a 2-wire ferrule

Ferrules 0.25 mm2 to 2.5 mm2 (26 AWG

to 14 AWG)

Spring-terminal wiring

Gauge 0.2 mm2 to 2.5 mm2 (26 AWG

to 14 AWG) copper conductor
wire

Wire strip length 10 mm (0.39 in.)

Temperature rating 90 °C minimum

Wires per spring terminal One wire per spring terminal;

two wires per spring terminal
using a 2-wire ferrule

Ferrules 0.25 mm2 to 2.5 mm2 (26 AWG

to 14 AWG)

NI 9215 Getting Started Guide | © National Instruments | 13

Connector securement

Securement type Screw flanges provided

Torque for screw

0.2 N · m (1.80 lb · in.)

flanges

Weight

NI 9215 with screw

150 g (5.3 oz)

terminal

NI 9215 with spring

138 g (4.9 oz)

terminal

NI 9215 with BNC 173 g (6.1 oz)

14 | ni.com | NI 9215 Getting Started Guide

Preparing the Environment

Ensure that the environment in which you are using the NI 9215
meets the following specifications.

Operating temperature

-40 °C to 70 °C

(IEC 60068-2-1, IEC 60068-2-2)

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.

NI 9215 Getting Started Guide | © National Instruments | 15

NI 9215 Pinout

AI0+
AI0­AI1+
AI1–
AI2+
AI2–
AI3+
AI3–
NC
COM

0
1
2
3
4
5
6
7
8
9

AI0+
AI0–
AI1+
AI1–
AI2+
AI2–
AI3+
AI3–
NC
COM

0
1
2
3
4
5
6
7
8
9

AI0+

AI0–

AI1+

AI1–

AI2+

AI2–

AI3+

AI3–

16 | ni.com | NI 9215 Getting Started Guide

Table 1. Signal Descriptions

Signal Description

AI+ Positive analog input signal connection

AI- Negative analog input signal connection

COM Common reference connection to isolated ground

NC No connection

NI 9215 Getting Started Guide | © National Instruments | 17

Grounded Differential Connections

Voltage

Source

+

–

AI+

AI–

COM

NI 9215 with
Screw/Spring
Terminal

COM

NI 9215
with BNC

AI+

AI–

+

–

18 | ni.com | NI 9215 Getting Started Guide

Floating Differential Connections

1 MΩ

Resistor

NI 9215 with
Screw/Spring
Terminal

AI+

AI–

COM

Voltage

Source

+

–

• Connect the negative lead to COM through a 1 MΩ resistor
to keep the signal source within the common-mode voltage
range.

• The NI 9215 with screw terminal and the NI 9215 with spring
terminal does not read data accurately if the signal source is
outside of the common-mode voltage range.

NI 9215 Getting Started Guide | © National Instruments | 19

NI 9215
with BNC

AI+

AI–

Voltage

Source

100 kΩ

+

–

The NI 9215 with BNC has internal circuitry that maintains the
common mode voltage range.

20 | ni.com | NI 9215 Getting Started Guide

Single-Ended Connections

+

–

AI+

AI–

Voltage

Source

NI 9215 with
Screw/Spring
Terminal

COM

Connect the ground signal to COM to keep the signal source
within the common-mode voltage range.

NI 9215 Getting Started Guide | © National Instruments | 21

NI 9215
with BNC

AI+

AI–

+

–

Voltage

Source

The NI 9215 with BNC has internal circuitry that maintains the
common mode voltage range.

Connection Guidelines

• Make sure that devices you connect to the NI 9215 are
compatible with the module specifications.

• You must use 2-wire ferrules to create a secure connection
when connecting more than one wire to a single terminal on
the NI 9215 with screw terminal or NI 9215 with spring
terminal.

22 | ni.com | NI 9215 Getting Started Guide

High-Vibration Application Connections

If your application is subject to high vibration, NI recommends
that you follow these guidelines to protect connections to the
NI 9215 with screw terminal or the NI 9215 with spring terminal:

• Use ferrules to terminate wires to the detachable connector.

• Use the NI 9927 backshell kit with the NI 9215 with screw
terminal or the NI 9981 backshell kit with the NI 9215 with
spring terminal.

Overvoltage Protection

The NI 9215 provides overvoltage protection for each channel.

Note Refer to the device datasheet on ni.com/manuals

for more information about overvoltage protection.

NI 9215 Getting Started Guide | © National Instruments | 23

Where to Go Next

RELATED INFORMATION

C Series Documentation
& Resources

ni.com/info cseriesdoc

Services

ni.com/services

CompactRIO

Located at ni.com/manuals Installs with the software

CompactDAQ

NI 9215 Datasheet

NI-RIO Help

LabVIEW FPGA Help

NI 9215 Datasheet

NI-DAQmx Help

LabVIEW Help

24 | ni.com | NI 9215 Getting Started Guide

Product Certifications and Declarations

Refer to the product Declaration of Conformity (DoC) for
additional regulatory compliance information. To obtain product
certifications and the DoC for NI products, visit ni.com/product-

certifications, search by model number, and click the appropriate

link.

Worldwide Support and Services

The NI website is your complete resource for technical support.
At ni.com/support, you have access to everything from
troubleshooting and application development self-help resources
to email and phone assistance from NI Application Engineers.

Visit ni.com/services for information about the services NI offers.

Visit ni.com/register to register your NI product. Product
registration facilitates technical support and ensures that you
receive important information updates from NI.

NI corporate headquarters is located at
11500 North Mopac Expressway, Austin, Texas, 78759-3504. NI

NI 9215 Getting Started Guide | © National Instruments | 25

also has offices located around the world. For support in the
United States, create your service request at ni.com/support or
dial 1 866 ASK MYNI (275 6964). For support outside the
United States, visit the Worldwide Offices section of ni.com/

niglobal to access the branch office websites, which provide up-

to-date contact information.

Information is subject to change without notice. Refer to the NI Trademarks and Logo Guidelines
at ni.com/trademarks for information on NI trademarks. Other product and company names
mentioned herein are trademarks or trade names of their respective companies. For patents
covering NI products/technology, refer to the appropriate location: Help»Patents in your software,
the patents.txt file on your media, or the National Instruments Patent Notice at ni.com/

patents. You can find information about end-user license agreements (EULAs) and third-par ty

legal notices in the readme file for your NI product. Refer to the Export Compliance Information at

ni.com/legal/export-compliance for the NI global trade compliance policy and how to obtain

relevant HTS codes, ECCNs, and other import/export data. NI MAKES NO EXPRESS OR
IMPLIED WARRANTIES AS TO THE ACCURACY OF THE INFORMATION CONTAINED
HEREIN AND SHALL NOT BE LIABLE FOR ANY ERRORS. U.S. Government Customers: The
data contained in this manual was developed at private expense and is subject to the applicable
limited rights and restricted data rights as set forth in FAR 52.227-14, DFAR 252.227-7014, and
DFAR 252.227-7015.

© 2004—2019 National Instruments. All rights reserved.

373779H-01 June 9, 2019