7.2.1.11. Cooling fan operation on/off time

7.2.1.11. Cooling fan operation on/off time

 

When the robot is operating, the temperature inside the controller increases due to the regenerative resistor. In order to prevent the temperature from increasing, the cooling fan should run.

 

When the robot is inactivated, the temperature inside the controller does not go up any more. In such condition, there is no reason for the cooling fan to run. However, if the cooling fan runs even in such condition, reverse effects such as shortening of the fan’s lifetime, generation of noise, and increasing of power consumption, will be caused.

 

When the robot is activated (Motor On), the cooling fan should run immediately. When the robot is deactivated, (Motor Off or Power Saving), the cooling fan should stop running after a certain time. If the cooling fan cannot run immediately, the latent heat of the regenerative resistor will cause the temperature inside the controller to go up.

 

The output for controlling the cooling fan’s on/off activity is provided through DO3 of TBIO of the system board. The circuit for controlling the cooling fan power should be configured using the output signal.