Woodward 2301D, Инструкция по установке и эксплуатации, Страница: 52 / 130

2301D/2301D-EC Digital Control Manual 26247
44 Woodward
J**Dynamics #1 5 Pt Gain**
This menu and control function is enabled when Configure Menu: A**ENGINE &
SPEED CONTROL** parameter 07 ENABLE 5 SLOPE GAIN MAP is TRUE and
provides a 5-point curve as a function of prime mover load for the variable GAIN
set point. The Breakpoint parameter is based on what is set in Configure:
parameter ‘08 SEL GAIN FUNCTION (1,3)’. The prime mover Fuel Demand %
(1) or generator kilowatt % (2) or engine speed (3) is used as the load/rpm axis. It
is useful in applications that have a non-linear fuel valve (such as butterfly
valves). A plot of the fuel system must be determined to properly adjust the gain
of the control to match the gain of the system at all loads. See the Gas Engine
Setup and Control Gain Programming Steps sections below.
01 BREAKPOINT 1A (%LD OR RPM) dflt = 99.60 (0.01, 5000.00)
Set at the min load point no-load fuel demand or 0% KW.
02 GAIN @BREAKPOINT 1A dflt = 4.0 (0.01, 100.00)
The no load GAIN value.
03 BREAKPOINT 1B (%LD OR RPM) dflt = 99.70 (0.01, 5000.00)
The Fuel demand % or KW% at the next load breakpoint.
04 GAIN @BREAKPOINT 1B dflt = 4.0 (0.01, 100.00)
The GAIN value when the load is at breakpoint B.
05 BREAKPOINT 1C (%LD OR RPM) dflt = 99.80 (0.01, 5000.00)
The load % for breakpoint C.
06 GAIN @BREAKPOINT 1C dflt = 4.0 (0.01, 100.00)
This is the GAIN value when the load is at breakpoint C.
07 BREAKPOINT 1D (%LD OR RPM) dflt = 99.90 (0.01, 5000.00)
The load % for breakpoint D.
08 GAIN @BREAKPOINT 1D dflt = 4.0 (0.01, 100.00)
The GAIN value when the load is at breakpoint D.
09 BREAKPOINT 1E (%LD OR RPM) dflt = 100.00 (0.01, 5000.00)
The load % for breakpoint E.
10 GAIN @BREAKPOINT 1E dflt = 4.0 (0.01, 100.00)
The GAIN value when the load is at breakpoint E.
11 RESET 1 dflt = 2.0 (0.01, 100.00)
This compensates for the lag time of the engine. It adjusts the time required for
the control to return the speed to zero error after a disturbance. Reset is adjusted
to prevent slow hunting and to minimize speed overshoot after a load
disturbance.
12 ACT COMPENSATION dflt = 12.00 (0.01, 100.00)
This compensates for the actuator and fuel system time constant. Increasing
compensation increases actuator activity and transient performance.
13 WINDOW WIDTH 1 (RPM) dflt = 60.00 (1.00, 200.00)
The magnitude (in rpm) of speed error at which the control automatically
switches to fast response. The control uses the absolute value of speed error to
make this switch. The absolute value is the difference between the speed
reference and the speed. A window width that is too narrow results in cycling that
always factors in the gain ratio (see Figure 3-2).