Komatsu PC200-8M0, Shop Manual, Page: 282 / 1254

SEN06123-00
10-600
16
PC200, 200LC, 220, 220LC-8M0
600 Electrical system
Electrical control system
B mode and L mode
q
In B or L mode, engine output is controlled to a
constant level.
q
The controller controls the pump absorption
torque to decrease the engine speed while
keeping the engine torque at a constant level
along the equal engine horsepower curve.
q
The controller controls pump discharge (Q) so
that the engine torque can be kept at a con-
stant level along the equal engine horsepower
curve.
2) Function to control pump during travel
q Traveling the machine in P or ATT mode
increases engine speed (N).
q Traveling the machine in E or B mode leaves
the working mode unchanged, but raises the
pump absorption torque and engine speed (N)
to values same as those in P mode.
q If the machine travels in L mode, the working
mode and engine speed (N) do not change,
but the pump absorption torque is increased.
Mode B L
Partial output point 75% 70%
Mode Matching point
B
80.9 kW/1,780 rpm
{108 HP/1,780 rpm}
L
73.6 kW/1,800 rpm
{99 HP/1,800 rpm}