14 Starting the Engine - Brief Instructions
HELENOS V
51
14
Starting the Engine - Brief Instructions
14.1
Adjust clearance of magnetic pulse pickup.
14.2
Check program with respect to relevant parameters: number of teeth, speed, etc.
14.3
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.
Overspeed protection must be guaranteed!
14.4
Start engine and run it up to nominal speed using the set point potentiometer.
14.5
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.
14.6
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.
14.7
Gain-correction (P-correction) for gas engines resp. for variable speed governors with
larger speed ranges; adjust map if necessary.
14.8
Checking the remaining program items, e.g., starting fuel injection, ramp time, etc.
The adjustment procedures as required for items 14.2 up to 14.8 and any further
options of adjustemnt are in detail described in brochure DG 95110 - e.
Warning
