Operation
057-295 ISSUE: 1
Page 42 of 60
5.1.1.4
PROPORTIONAL
NOTE: For more detailed information on the set up procedure for Proportional, see the
section entitled Setup Procedure elsewhere in this document.
Adjusts the
Proportional
gain of the AVR output control. Turning the preset clockwise raises the
Proportional gain.
Should the generator output be different from the AVR
Voltage Set Point
, a jump in Excitation Output
is made to correct the error. The amplitude of this jump is governed by the Proportional Gain.
Too high a proportional gain setting results in an unstable output voltage, typically characterised by a
fast changing, fast oscillating alternator output.
Too low a proportional gain setting may result in the
Voltage Set Point
not being reached or being
reached a long time after a system disturbance such as the generator starting, or a change in load
levels.
5.1.1.5
INTEGRAL
NOTE: For more detailed information on the set-up procedure for Integral, see the section
entitled Setup Procedure elsewhere in this document.
Adjusts the
Integral
gain of the AVR output control. Turning the preset clockwise increases the
Integral gain.
Should the generator output differ from the AVR
Voltage Set Point
, the difference is summed over
time and the Excitation Output ramps to correct the accumulated error. The speed of this change is
governed by the Integral Gain.
Too high an integral gain setting results in an unstable output voltage, typically characterised by a
slow changing, slow oscillating alternator output.
Too low an integral setting may result in the
Voltage Set Point
not being reached or being reached a
long time after a system disturbance such as the generator starting, or a change in load levels.
