Woodward 723PLUS Technical Manual page 71

Manual 26482
01 ACT BUMP ENABLE—Set TRUE to enable the actuator bump function for 60
minutes. Set to FALSE to disable this function and to reset the actuator bump 60-
minute timer.
02 ACT BUMP DURATION (0.1–2.0 sec)—This is the time (in seconds) that the
actuator bump will last once initiated.
03 ACT BUMP LEVEL (0.0–100.0%)—This is the amount (in percent) the
actuator output current will be reduced from its present level once an actuator
bump is initiated. This reduced level is held for the ACT BUMP DURATION.
04 INITIATE BUMP (*T/F)—Toggling this value "FALSE" to "TRUE" initiates the
Actuator Bump function. Reset "FALSE" to set up for another bump.
L**ACT / TORQUE CALIB**
01 ACT OUT % @ NO LOAD (0.0–100.0%)—Find the normal no-load actuator
percent output, which is defined as the actuator percent output that requires the
least amount of fuel demand to run the engine while it is unloaded and hot. The
engine speed at no-load may be at either idle speed or rated speed. Initially set
this value to match the 03 ACTUATOR COMMAND % under A**DISPLAY 1**.
Finally adjust this value until the 03 SCALED ACT COMMAND % reads 0.0%
±1.0 when the engine is at this unloaded condition.
02 ACT OUT @ % MAX LOAD (0.0–100.0%)—Initially adjust this value to match
the 03 ACTUATOR COMMAND % under A**DISPLAY 1** when the engine is at
full load. Finally adjust this value until the DEFAULT LOAD % reads 100.0%
while the engine is operating at full load.
03 SCALED ACT COMMAND % displays the scaled actuator percent fuel
demand. This value is used to set the above settings. When finished calibrating
the above two values, this value and the 07 TORQUE INPUT % value will read
approximately the same values from no load to full load. This a good way of
verifying calibration.
04 TORQUE IN @ NO LOAD (–150.0–150.0%)—Find the normal no-load torque,
which is defined as zero torque. Adjust this value until the 07 TORQUE INPUT %
prompt reads 0.0% ±1.0 when the engine is at this zero torque condition.
05 TORQUE IN @ MAX LOAD (–150.0–150.0%)—Adjust this value until the 07
TORQUE INPUT % prompt reads 100% when the engine is operating at full
torque.
06 TORQUE IN FILTER (HZ) (0.001–10.0)—This value in hertz is used for
filtering the Torque Input signal. Increase this value if a noisy signal is seen.
Woodward
ACT OUT % @ NO LOAD and ACT OUT % @ MAX LOAD must always
be calibrated. The torque sharing and the backup actuator fuel
demand sharing functions both depend heavily upon accurate
*ACT/TORQUE CALIB* settings. Carefully determine and enter the
*ACT/TORQUE CALIB* settings and re-verify these settings following
any related mechanical changes (linkage, actuator. etc.). Be sure to
set ALL menu items to ensure a correct SCALED ACT COMMAND
and TORQUE INPUT % signal exists when the Torque analog input is
both valid or failed. Failure to do so may result in incorrect torque
sharing operation or actuator fuel demand sharing.
723PLUS Digital Marine Control
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