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AUTOMATIC SPEED CONTROL MODES
When operating in Auto, the controller will start the engine at the warm up speed and maintain that
speed until the warm up time delay expires. After that, the control will ramp the speed up to the Prime
Speed setting and maintain that through the time period. Once the Prime time has expired, the
control will begin operating in the program speed control mode selected. There are three operating
control modes available; Single Speed, Target and Linear. Once the controller is in the operating speed
control mode, it will remain there until the auto start signal calls for the engine to be shut down. When
it is time to shut the engine down under normal circumstances, the control panel will reduce the
engine speed to the cool down speed where it will run until the cool down timer expires. At this point,
the controller will stop the engine. If any of the warm up, prime or cool down speeds are not desired,
you can set the time period for that parameter to zero and the control will skip that routine.
SINGLE SPEED
Single speed control refers to a single operating speed. This is the speed at which the engine will run
at for the duration of the automatic engine operation with the exception of warm up speed, prime
speed and cool down speed. During the operating speed, the user may use the up or down arrows to
change the engine speed manually. Once an operator input occurs, the engine will remain at the new
speed until the cool down cycle begins.
TARGET SPEED CONTROL
Target speed contro
l refers to the controller’s ability to throttle the engine to maintain a desired set
point. If using a level transducer, this would be a desired depth. For example, if the measured depth
rises above the target value, the engine speed will increase. If the depth drops below the desired
value, the engine speed will decrease. This logic can be used to maintain a pressure as well. The
control will run the warm up, prime and cooldown routine as well during this selection.
