Eagle Tree Brushless RPM Sensor User Manual

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http://www.eagletreesystems.com

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2” wire, and the pin could be used to pierce the insulation of one of your motor wires, thus forming an electrical connection.

Note: with most ESC/motor combinations, the sensor should work correctly if only the “Wire 1” wire is connected, and the “Wire 2” wire is left
disconnected.

Configuring and Calibrating the Sensor with the Windows Application

If you have not already done so, install your Data Recorder or eLogger in your model and set up the Recorder software as described in your instruction
manual.

To calibrate the RPM sensor, you need to know the number of “poles” your brushless motor has. This information is normally supplied by the motor
manufacturer. The term “poles” refers to the number of magnets in the motor (NOT the number of stator teeth, “legs,” or “hammerheads.”) For example,
if you have an outrunner with 10 teeth on the stator and 14 magnets in the flux ring, the motor has 14 poles. Note that most (but not all) in-runner motors
are two pole motors.

If you are uncertain about the number of poles, or want to verify you calculated correctly, a hand-held tachometer can be used to compare the RPM value
displayed real-time by your recorder, in a bench test (assuming it is safe for you to do this). Real-time display is available in Recorder USB Live Mode, on
the eLogger PowerPanel, or with the Seagull Wireless Dashboard. If the value displayed is incorrect, you can change the poles setting to adjust the
displayed RPM value. For example, if your handheld tachometer reads 4000 RPM, and your Eagle Tree data shows the maximum RPM of 8000, you would
need to double the number of poles to “2.”

For Pro, Flight, Boat or eLogger users, click on “Calibration, Calibrate Motor RPM”, select the “Brushless Motor RPM Sensor” option, and enter the number
of Poles and the gear ratio. For Car Recorder users, Choose “Calibration, Calibrate Speed from RPM” and follow the above procedure.

For recording RPM, make sure to click “Hardware, Choose Parameters to Log In the Recorder” in the Windows Application, and select the RPM parameter.

RPM data can be displayed with our Data Recorder software, with our PowerPanel LCD, with our Seagull Dashboard, or with our OSD products. There are
two types of RPM parameters that can be displayed (assuming calibration has been completed correctly):

Motor RPM: This parameter indicates the actual speed the motor is turning,.

Prop RPM (Headspeed): This parameter indicates the speed of the propeller or helicopter headspeed.

Troubleshooting

Below is a list of problems that may be encountered, and steps to remedy them. If your particular issue is not addressed by the below, see the Support page
on

http://eagletreesystems.com

or email

[email protected]

. Include a full description of your problem, your machine configuration,

brands/models of receivers, transmitters and servos, Windows Application and Recorder firmware version if possible, and any other relevant details.

Issue: RPM is not working correctly
Solutions:

•

In the Windows Application, make sure that the “Brushless Motor RPM Sensor” option is selected in "Calibration, Calibrate Motor RPM" or
“Calibration, Calibrate Speed from RPM”, and make sure your number of poles and gear ratio are set correctly.

•

For recording RPM, make sure that when you click “Hardware, Choose Parameters to Log..” in the Windows Application, you have checked RPM.

•

If you are using the sensor with a Data Recorder (not the eLogger), make sure the power supply to the Recorder (from the Y cables or separate battery
pack) is less than about 5.6V.

Limited Warranty

Eagle Tree Systems, LLC, warrants the Brushless Motor RPM Sensor to be free from defects in materials and workmanship for a period of one (1) year from the date of original
purchase. This warranty is nontransferable. If your unit requires warranty service during this period, we will replace or repair it at our option. Shipping cost to us is your
responsibility. To obtain warranty service, email

[email protected]

for further instructions.

This limited warranty does not cover:

•

The Software. See the Software license agreement for more information on Software restrictions.

•

Problems that result from:

External causes such as accident, abuse, misuse, or problems with electrical power

Servicing not authorized by us

Usage that is not in accordance with product instructions

Failure to follow the product instructions

THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, AND YOU MAY ALSO HAVE OTHER RIGHTS WHICH VARY FROM STATE TO STATE (OR
JURISDICTION TO JURISDICTION). OUR RESPONSIBILITY FOR MALFUNCITONS AND DEFECTS IN HARDWARE IS LIMITED TO REPAIR AND
REPLACEMENT AS SET FORTH IN THIS WARRANTY STATEMENT. ALL EXPRESS AND IMPLIED WARRANTIES FOR THE PRODUCT, INCLUDING, BUT NOT
LIMITED TO, ANY IMPLIED WARRANTIES AND CONDITIONS OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED IN
TIME TO THE TERM OF THE LIMITED WARRANTY PERIOD AS DESCRIBED ABOVE. NO WARRANTIES, WHETHER EXPRESS OR IMPLIED, WILL APPLY
AFTER THE LIMITED WARRANTY PERIOD HAS EXPIRED. SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS,
SO THIS LIMITATION MAY NOT APPLY TO YOU.
WE DO NOT ACCEPT LIABILITY BEYOND THE REMEDIES PROVIDED FOR IN THIS LIMITED WARRANTY OR FOR CONSEQUENTIAL OR INCIDENTAL
DAMAGES, INCLUDING, WITHOUT LIMITATION, ANY LIABILTY FOR THIRD-PARTY CLAIMS AGAINST YOU FOR DAMAGES, FOR PRODUCTS NOT BEING
AVAILABLE FOR USE, OR FOR LOST DATA OR LOST SOFTWARE. OUR LIABILITY WILL BE NO MORE THAN THE AMOUNT YOU PAID FOR THE PRODUCT
THAT IS THE SUBJECT OF A CLAIM. THIS IS THE MAXIMUM AMOUNT FOR WHICH WE ARE RESPONSIBLE. SOME STATES DO NOT ALLOW THE
EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION OR EXCLUSION MAY NOT APPLY TO YOU