Setup Procedure
057-295 ISSUE: 1
Page 26 of 60
4.3.2 PID CALIBRATION
The following subsections details the procedure for calibrating the
Proportional
,
Integral
, and
Derivative
settings for optimal generator load acceptance and operation. Wherever possible, a load
bank is to be used to ensure stable voltage control during different loading conditions. If a load bank is
not available, the
Voltage Set Point Step
function is used to emulate load step changes.
4.3.2.1
PROPORTIONAL
NOTE: If an oscilloscope is not available, the voltmeter and SCADA screen are used
solely. This does not show rapid oscillation of the voltage output and hence does not provide
the optimum setup environment.
WARNING!: Use only a suitable insulated preset adjustment tool.
Start the set and wait for the voltage to reach the
Set Point
. Allow a little time for the voltage to
stabilise
Gradually increase the
Proportional
setting, by turning the
Proportional
preset clockwise, until the
generator output voltage becomes unstable. Very slowly decrease the
Proportional
setting, until the
voltage stabilises. Make a note of the
Proportional
setting value, on the Commissioning Screen, and
reduce the setting by approximately 20 %.
4.3.2.2
INTEGRAL
NOTE: Proceed below only after setting Proportional.
NOTE: If an oscilloscope is not available, the voltmeter and SCADA screen are used
solely. This does not show rapid oscillation of the voltage output and hence does not provide
the optimum setup environment.
WARNING!: Use only a suitable insulated preset adjustment tool.
Gradually increase the
Integral
setting by turning the
Integral
preset clockwise, until the generator
output voltage becomes unstable. Very slowly decrease the
Integral
setting, until the voltage
stabilises.
