National Instruments NI 9866 Getting Started Manual

GETTING STARTED GUIDE

NI 9866

1-Port, LIN Module

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This document explains how to connect to the NI 9866.

The NI 9866 module requires the latest software to be installed.
The latest version of the software is at ni.com/downloads.

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 9866. 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 9866 only as described in this document.

Hot Surface This icon denotes that the component

may be hot. Touching this component may result in
bodily injury.

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Caution Do not operate the NI 9866 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
way. If the product is damaged, return it to NI for
repair.

Safety Guidelines for Hazardous Locations

The NI 9866 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 9866 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.

NI 9866 Getting Started Guide | © National Instruments | 3

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 Zone 2 applications, install a protection

device between the LIN signals and the NI 9866 LIN
pins. The device must prevent the LIN Port-to-COM
voltage from exceeding 55 V if there is a transient
overvoltage condition.

Special Conditions for Hazardous Locations Use in Europe and Internationally

The NI 9866 has been evaluated as Ex nA IIC T4 Gc equipment
under DEMKO Certificate No. 07 ATEX 0626664X and is
IECEx 14.0089X certified. Each NI 9866 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 9866
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.

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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.

Wiring the NI 9866

The NI 9866 has one 9-pin male D-Sub connector that provides
connections to a LIN bus.

The port has two common pins (COM) that are internally
connected to the module’s isolated reference and serve as the
reference ground for LIN signal. You can connect the LIN bus
reference ground to one or both COM pins. The port also has an

NI 9866 Getting Started Guide | © National Instruments | 5

optional shield pin, SHLD, that you can connect to a shielded
LIN cable. Connecting SHLD may improve signal integrity and
EMC performance in a noisy environment.

Caution You must use a UL listed ITE power supply

marked LPS with the NI 9866.

The NI 9866 requires an external power supply of +8 to +18 V to
operate. Supply power to the NI 9866 V

pin from the LIN

SUP

bus.

Note Power on V

is required for LIN operation.

SUP

The NI 9866 pinout is listed in Table 1.

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Table 1. Pin Assignments for the NI 9866

6
7
8
9

1
2
3
4
5

Connector Pin Signal Name

1 No Connection (NC)

2 NC

3 COM

4 NC

5 SHLD

6 COM

7 LIN

8 NC

9 V

SUP

NI 9866 Getting Started Guide | © National Instruments | 7