Manual 37278B GCP-30 Series - Genset Control
Page 44/174 © Woodward
Analog controller (Package Q, Option Q: setting 'ANALOG')
Parameter 84
Pow.fact.contr.
gain Kpr 000
Package Q, Option Q only
cos ϕ controller:P-gain 1 to 240
The proportional coefficient specifies the gain. By increasing the gain, the response
is increased to permit larger corrections to the variable to be controlled. The farther
out of tolerance the process is the larger the response action is to return the process
to the tolerance band. If the gain is configured too high, the result is excessive
overshoot/undershoot of the desired value.
Parameter 85
Pow.fact.contr.
reset Tn 00.0s
Package Q, Option Q only
cos ϕ controller:reset time 0.0 to 60.0 s
The reset time T
n
identifies the I portion of the PID loop. The reset time corrects for
any offset (between set point and process variable) automatically over time by
shifting the proportioning band. Reset automatically changes the output require-
ments until the process variable and the set point are the same. This parameter per-
mits the user to adjust how quickly the reset attempts to correct for any offset. The
reset time constant must be greater than the derivative time constant. If the reset
time constant is too small, the engine will continually oscillate. If the reset time
constant is too large, the engine will take to long to settle at a steady state.
Parameter 86
Pow.fact.contr.
derivat.Tv 0.00s
Package Q, Option Q only
cos ϕ controller:derivative-action time 0.00 to 6.00 s
The derivative-action time T
V
identifies the D part of the PID controller. By in-
creasing this parameter, the stability of the system is increased. The controller will
attempt to slow down the action of the actuator in an attempt to prevent excessive
overshoot or undershoot. Essentially this is the brake for the process. This portion
of the PID loop operates anywhere within the range of the process unlike reset.
To Next Page
Loading...
Need help?
General
