Woodward 2301E, Инструкция по установке и эксплуатации, Страница: 43 / 182

Manual 26641 2301E Digital Control
Woodward 33
Figure 3-3. Dual Start Limit Function
Torque Limiter
The Torque Limit Curve (TLC) sets the limit fuel demand based on the engine
speed input. This fuel limit prevents over-fueling which limits torque for up to
three speed breakpoints. The input breakpoints units are in rpm. The fuel limits
are in percent fuel demand. Fuel demand is generally set slightly above the fuel
required to carry the allowable load for each specific breakpoint rpm. A setting
that is too low can degrade transient load performance. The torque limiter is set
in Service menu L**Fuel Limiters1/2**.
Manifold Air Pressure Limiter
The Manifold Air Pressure (MAP) Limiter sets the fuel limit based on the air
pressure in the engine manifold. This fuel limit prevents over-fueling when air
pressure is low. A five breakpoint pressure curve is available. Setting up this
limiter will also prevent excessive smoke. The fuel limits are in percent fuel
demand.
An overload switch can be used to indicate that the engine is near the maximum
manifold air pressure limit. Setting up the MAP limiter see service menu M**Fuel
Limiters 2/2**.
Speed/Load Reference and Ramps
The 2301E control provides local control with discrete inputs for raising and
lowering speed/load. For remote speed/load setting, the control provides a
remote reference analog input. Input functions are enabled as follows:

Local Speed/Load Reference Raise/Lower discrete inputs control the speed
ramp inputs when the CB Aux input is open.

Remote Speed/Load Reference setting is enabled when the Raise
Speed/Load and Lower Speed/Load contacts are both closed, the Rated