A method of testing a valve actuator coupled to a process control device includes the steps of: controlling, with the process control device, a pressure within the valve actuator to ramp from an initial pressure towards a pre-determined pressure limit; monitoring a position of the valve actuator to detect a travel of the valve actuator; and upon one of the pressure within the valve actuator reaching the pre-determined pressure limit or detecting the travel of the valve actuator, controlling the pressure within the valve actuator to return to the initial pressure.