5.2.2 Motor: Motor overheat

The motor is considered to be overheated when it stops running in the middle of a wear test. This usually occurs right after the load is applied.

An error message corresponding to the motor being overheated can also be found in the Mactalk software after the stoppage of the motor.

Before attempting to troubleshoot the machine, exit the test interface and restart the tribometer.

Navigate to Desktop -> MacTalk and open the MacTalk software.

Reduce the angular acceleration of the motor by simply clicking the down button or inputting a specific acceleration.

The motor has most probably overheated due to the torque required of it to rotate the disk exceeding its rated limits. Therefore, reducing the angular acceleration, which is a component of torque, could help reduce the torque demanded from the motor.

Lowering the angular acceleration would reduce the rate the motor speeds up whenever the RPM drops below the required RPM. While there is yet to be a lower limit for the value of angular acceleration, its value should be high enough to maintain smooth running of the wear tests.

"Save in flash" reprograms the motor to run on the new settings.

The user can then close the MacTalk software and resume tests.