Woodward ProAct I, Product Manual

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ProAct I/II Manual 04121
44 Woodward
6. Decel Time is the time required for the control to ramp the engine speed
from rated speed to idle speed. The time is set from 0 to 500 seconds. The
ramp is started whenever the Idle/Rated switch is opened.
Figure 4-8. Accel/Decel Example
Actual engine deceleration may be slower than set by the Decel Time
set point. This occurs when the Decel Time set point is faster than
system inertias will allow the engine to slow down in speed. This
condition is indicated by the control actuator output going to the
minimum fuel position. See Idle Droop below.
7.
Raise Rate is the rate at which the speed reference is ramped when using
the Raise command or when the Remote Speed Setting input is changed in
the increase direction. The rate programmed is in rpm per minute. A step
change in the remote input does not cause an immediate change in the
reference, which is ramped to the new setting at the Raise Rate.
8.
Lower Rate is the rate at which the speed reference is ramped when using
the Lower Speed command or when the Remote Speed Setting input is
changed in the decrease direction. The rate is set in rpm per minute. A step
change in the remote input does not cause an immediate change in the
reference, which is ramped to the new setting at the Lower Rate.
9.
20 mA Remote Reference is the engine speed desired when 20 mA is
applied to the Remote Speed Reference input. The desired speed is set in
rpm.
10. 4 mA Remote Reference is the engine speed desired when 4 mA is applied
to the Remote Speed Reference input. The desired speed is set in rpm.