How does the AX2550s SmartAmps current limiting works?
On the AX2550, the current limiting is based on the measured temperature of the heat sink, near the mounting point of the Power MOSFET transistors inside the controller. While the measured temperature is below 60oC, the controller will deliver up to 120A (140A on the HE version) of Continuous Amps. For every degree of temperature rise above 60oC, the limit is reduced from this absolute maximum amount. Furthermore you can select one of 6 current limit settings based on your robot’s component capabilities (motors, battery, wiring), up to the controller’s own limit. The current limit that is applied at any given time is the lesser value of your selected value and the maximum Amps the controller is allowed to deliver at its current temperature point. This capability ensures that the controller will be able to work safely with practically all motor types and will adjust itself automatically for the various load and environmental conditions.
On the AX2550, the current limiting is based on the measured temperature of the heat sink, near the mounting point of the Power MOSFET transistors inside the controller. While the measured temperature is below 60oC, the controller will deliver up to 120A (140A on the HE version) of Continuous Amps. For every degree of temperature rise above 60oC, the limit is reduced from this absolute maximum amount. Furthermore you can select one of 6 current limit settings based on your robots component capabilities (motors, battery, wiring), up to the controllers own limit. The current limit that is applied at any given time is the lesser value of your selected value and the maximum Amps the controller is allowed to deliver at its current temperature point. This capability ensures that the controller will be able to work safely with practically all motor types and will adjust itself automatically for the various load and environmental conditions.
