Woodward 2301D, Инструкция по установке и эксплуатации, Страница: 37 / 130

Manual 26247 2301D/2301D-EC Digital Control
Woodward 29
03 SPEED FUNCTION TYPE dflt = 1 (1, 4)
This is the speed calculation where:

Speed function 1 is used for standard speed sensing for MPU sensors.

Speed functions 2 and 3 are not used.

Speed function 4 is specifically designed to give readings at low speeds
(input frequency <1000 Hz).
Speed is calculated by using only two inter-tooth time intervals. This function
measures the time between each tooth and stores the two most recent
measurements. This block samples and averages these two measurements each
time the block executes and uses the average to calculate speed.
04 SPEED FUNCT SEL FOR (monitor)
Displays at what speed function the control is configured for:

Standard MPU Speed Function

Not Supported

Low Speed Function
05 ENTER FAILED SPD SENSE % dflt = 5 (2.0, 50.0)
This should be set to a percentage of rated prime mover speed that will verify a
valid MPU signal exists while the prime mover is starting. (Default is 5% of rated.)
06 USE START SPEED dflt = FALSE (TRUE, FALSE)
Set to TRUE to enable a tunable Start Speed Reference. Set to FALSE to
disable the Start Speed Reference. This is typically only used on gas engines to
allow speed control below idle speed and to allow acceleration to the Start Fuel
Limiter without over-fueling.
07 ENABLE 5 SLOPE GAIN MAP dflt = FALSE (TRUE, FALSE)
Set to TRUE to permit the use of a 5-gain curve for setting the control gain as a
function of prime mover load. If “Use 2nd Dynamics” is also set TRUE, the use of
a second 5-gain curve is activated. These two curves each provide 5 tunable
gain settings at 5 tunable load-dependent breakpoints. If ‘Enable 5 Slope Gain
Map’ is set FALSE only a single gain value is used as the dynamic adjustment.
08 SEL GAIN FUNCTION dflt = 1 (1, 3)
Set to 1 to make slope breakpoints dependent on percent engine fuel demand
(Actuator %). It should be set to 2 to select the 5-slope gain map load axis to be
based on percent generator load (%). For non-generator applications and where
the dynamic slope gain map should be dependent on the engine speed the
function should be set to 3
.
09 DISPLAY GAIN FUNCTION (monitor)
Used to show where the gain is dependant on: Actuator %, Load % or Engine
Speed.
10 ENTER RATED/MAX LOAD (KW) dflt = 120 (10, 30000)
This is the maximum generator load (in kilowatts). This value limits the ENTER
RATED LOAD (KW) in H**LOAD SETTINGS**.
11 ENABLE IDLE DROOP dflt = FALSE (TRUE, FALSE)
Idle Droop is used when an engine is unloaded quickly or is operated at a very
low idle speed. Idle Droop is based on the controls output current. When the
current drops below the “Idle Breakpoint” setting or goes to minimum fuel during
rapid deceleration, the Idle Droop will increase the speed reference to allow the
engine to come under quicker, and reduces speed undershoot.