MHub369 Temperature Guide

MHub369 Temperature Guide

INTRODUCTION

After completing this manual, you will be able configure the MHub369 unit with all the necessary parameters required for the use of temperature sensors. The 369 allows for a maximum of four temperature sensors to be connected at the same. You as the operator will define the operating range, from which the unit will then be able to report any deviation from this range as well as scheduled temperature log reporting. 

REQUIRED HARDWARE

MHub369 


WIRING

BASIC LOOM

The basic loom is used for connecting peripherals that the MHub supports such as the driver keys & temperature sensors. Red/black are normal connections for power to MHub and the purple line is the 1 wire which will be used for temperature sensors.

NOTE: You cannot use Driver key and Temperature sensor at the same time. You can only use one accessory at a time on the 1 wire. Can not connect both as it will not work 




TEMPERATURE SENSOR TYPES

Supported temperature sensor types are DS18B20. Placement will vary depending on its application common uses include refrigerated trucks, engine temperature monitoring & Cabin temperature. Please refer to the wiring diagram (Appendix A) for instructions on how to connect the temperature sensor. 


MHub369 Configuration

First you will need to connect the MHub through Direct connection


Once connected, select Tools on the menu bar and open the Mhub configuration window.


Event Configuration

Once you are in the Mhub configuration window navigate to the search bar, and type in temperature, as seen below, all parameters that need to be configured for temperature readings can be found here.  


Periodic Temperature

A periodic temperature event will be generated if this parameter is set. To specify how often it sends this we will need to setup “Temperature report interval” under OBC settings. Select the ellipsis dots as highlighted in red below, an event configuration window will appear. Select the appropriate parameters you wish to configure. 


Temperature 1 – 4 Low/High

When the Temperature falls above or below the specified temperature range, either a Temperature High or Temperature Low event will be generated. Setting the temperature ranges can be done under Temperatures Sensors category.

Temperature Report Interval T

he MHub is able to periodically send the values of all 4 the temperature sensors. This parameter specifies the interval in seconds for sending the Periodic Temperature Event.

Temperature Sensor



Temperature 1 - 4 thresholds

The value of this parameter specifies the high/low temperature threshold of temperature sensors.

Note: that the units of this parameter are Celsius +50.

E.g. If we want to set the temperature of the freezer that is on the vehicle with a low setting of -10 Celsius and a high setting of 10 Celsius. Example we would change as follows:
Temperature 1 Low threshold = 40 Celsius
Temperature 1 High threshold = 60 Celsius

All you need to do is Add 50 to the required temperature value.

Now once the temperature sensors have been connected, we need to read the sensor ID to get a reading. 

Identifying Temperature Sensors 

Go to Tools >> Installer 


On the Installer page select Temperature > Identify all connected Temperature Sensors  


Read the Temperature Sensor IDs depending on how many are installed.
Write the Temperature Sensor ID that is detected 


The MHub can connect to up to a maximum of 4 temperature sensors. The temperature sensors are pre calibrated digital temperature sensors, and all communicate to the MHub by means of the same communications wire. In order for the MHub to know which of the 4 sensors it is communicating with, this parameter is programmed in each of the Temperature sensor ID’s and can be seen in Temperature Sensor category. You will need to click on the red button as indicated below.

 

Under the Temperature Sensor category, you will need to insure that, depending on the number of temperature sensors connected to the unit there should only be Temperature Sensor ID for that number.

For example, if you only have two temperature sensors connected then only the first two id should be populated, the rest should be set to 0000000000000000, or you can simple click on the D for the other two temperature ID.

Dashboard Testing  


Appendix A

Connecting the Temperature Sensor (DS18B20 sensor) to the MHub 



Simple connection on the desk to illustrate the connection.
Please note this is not a professional connection its only for illustration  




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