We use a Woodward APECS DYN1-1075 controllers and DYNA 2500 actuators to govern a generator set (this is factory supplied). Actuator is PWM current controlled. This is where the questions begin:
I need to deliver a failure indication of the governor system somehow. Was thinking of putting a relay on the power supply of the controller, but this is not a real indication; the real indication would be no output to the actuator.
As per specifications given by Woodward, output signal is PWM current to 6A max.
I would need to insert something in this line for monitoring, but not interrupt the signal from controller to actuator.
Please help with some ideas.