National Instruments 9755 User Manual

USER MANUAL

NI 9755

NI Powertrain Controls CompactRIO NOx Sensor Module Kit

Contents

Introduction .............................................................................................................................. 1

System Diagram ....................................................................................................................... 2

Hardware .................................................................................................................................. 2

Powering the Hardware ............................................................................................................ 3

Wiring Harness ......................................................................................................................... 5

Introduction

The National Instruments 9755 CompactRIO NOx Sensor Module Kit interfaces with NOx and

exhaust gas sensors.

O

2

Features

• Configurable from one to four channels

• Measures NOx (ppm) and O2 (%) concentrations

• Sensor controller supply voltage of 12 V to 16 V (24 V version available)

• Reverse battery protection on sensor controller module

• Sensor controller module harness

• LabVIEW FPGA and RT VIs for quick integration with application

• Integration with existing PXI or CompactRIO chassis hardware

System Diagram

NI USB-9853
CompactRIO

Optional Second Sensor

CAN 1

CAN 2

LabVIEW FPGA

Interface to

NI 9853

LabVIEW RT

Interface to

LabVIEW FPGA

National Instruments Software Support

Provides NOx and O2 Data to

User Application

Sensor

Control Module(s)

DC Power

Supply 12V

Figure 1. NI 9755 System

Hardware

The NI 9755 includes the following hardware:

• Continental UniNOx Smart NOx Sensor with integrated sensor controller module

• Sensor bung

• Wiring harness

• NI-9853 CompactRIO High-Speed CAN module

The wiring harness in the NI 9755 connects to the NOx Sensor Control Module and splits into
two cables for the NI-9853 module and an external power supply. The first cable connects to the
NI-9853 with a female DB-9 connector. A terminating resistor of approximately 120 Ω is located
inside this cable near the NOx Sensor Control Module and between the CAN High and CAN
Low wires. The second cable provides three non-terminated leads for connecting to a power
supply, which requires two leads, and for address selection of the NOx Sensor Module, which
requires one lead. If the cable is to be extended, follow CAN network wiring guidelines.

Refer to the NI 9853 CAN Module Operating Instructions and Specifications for more
information on cabling requirements.

Note You must use the sensor included in the NI 9755 kit. NI does not support other

sensors.

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