13 Starting the engine - brief instruction
Digital Governor Basic System PANDAROS III 45
13 Starting the engine - brief instruction
13.1 Adjust clearance of magnetic pulse pick-up.
13.2 Check program with respect to relevant parameters: number of teeth, speed, etc.
13.3 Calibrate sensors and setpoint adjusters, if necessary.
13.4 Make autoadjustment of actuator.
13.5 Set point potentiometer in mid-position:
P - Gain to 50
I - Stability to 0
D- Derivative to 0
If the dynamic values have already been determined for an installation, they can be
programmed directly at this point.
Additional overspeed protection independent of the speed
controller is compulsory!
13.6 Start engine and run it up to nominal speed using the set point potentiometer.
13.7 Increase gain (P-fraction) up to instability and reduce until stability is attained.
Increase stability (I-fraction) up to instability and reduce until stability is attained.
Increse derivative (D-fraction) up to instability and reduce until stability is attained.
With these values set, engine speed is to be disturbed briefly (e.g., by shortly
pressing the stop switch), and the transient oscillations are to be observed.
13.8 Check over the entire speed range.
If for maximum and minimum speed other values than the programmed ones should
result, this will be due to tolerances of the set point potentiometer. If the speed
derivation is not acceptable, it will be necessary to measure the setpoint source.
13.9 Gain-correction (P-correction) for gas engines resp. for variable speed governors
with larger speed ranges; adjust map if necessary.
13.10 Checking the remaining program items, e.g., starting fuel injection, ramp time, etc.
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