Komatsu 830E Shop Manual page 193

"6) Change/View Overspeeds . . ."
The OVERSPEEDS ENTRY SCREEN is used to enter
the desired speed settings for overspeed pickup, over-
speed dropout, speed override, and the maximum
retard speed control speed.
1. Use the down arrow key to move the cursor to the
menu position "CHANGE/VIEW OVERSPEEDS"
and press [ENTER], or press [6].
2. The OVERSPEEDS ENTRY SCREEN, Figure 2-
15, will be displayed. Using the UP and DOWN
arrows, move the cursor to the line where a
change is desired. Note that the empty or loaded
values are selected in the control system only
based on the input from the 2 speed overspeed
switch where 0 volts selects loaded value and
+28 volts selects empty values. Move the cursor
to the proper line and enter the desired value as a
permanent value in the truck code. (Type the
number and press [ENTER].)
General guidelines for picking entry speeds:
•
Loaded values must be less than or equal to
empty values.
•
Overspeed dropout must be less than or equal
to 0.95 of detect speed.
•
Speed override must be set at 1.0 mph (or
more) below the overspeed detect point.
Note: As the cursor is moved from one selection to
another, a variety of instructions appears at the bottom
of the screen, one for each selection.
a. Empty overspeed overshoot . . .mph
Overspeed overshoot speed setting (to be set
above the empty overpseed retarding mph) in
miles per hour for an empty truck.
b. Empty overspeed detect . . . mph
Overspeed retarding pickup setting in miles
per hour for an empty truck.
c. Empty overspeed dropout . . . mph
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FIGURE 2-15. OVERSPEEDS ENTRY SCREEN
Electrical Propulsion Components
Speed at which overspeed retarding is
released in miles per hour for an empty truck.
d. Empty speed override . . . mph
Speed override value in miles per hour for an
empty truck. It must be at least 1 mph lower
than the empty overspeed detect value.
e. Empty maximum retard pot . . . mph
Maximum retarding speed for the retard
speed control system when the pot is set at
maximum on an empty truck.
f. Loaded overspeed overshoot . . . mph
Overspeed overshoot speed setting (to be set
above the loaded overpseed retarding mph) in
miles per hour for a loaded truck.
g. Loaded overspeed detect . . . mph
Overspeed retarding pickup setting in miles
per hour for a loaded truck.
h. Loaded overspeed dropout . . . mph
Speed at which overspeed retarding is
released in miles per hour for a loaded truck.
i. Loaded speed override . . . mph
Speed override value in miles per hour for a
loaded truck. It must be at least 1 mph lower
than the loaded overspeed detect value.
j. Loaded maximum retard pot . . . mph
Maximum retarding speed for the retard
speed control system when the pot is set at
maximum on a loaded truck.
3. Move the cursor to the "leave overspeeds entry
screen" when finished entering values and press
[ENTER]. This automatically returns the program
to the TRUCK SETUP CONFIGURATION MINE
MENU. If you have made an inconsistent entry for
the speeds, you will not be able to exit the screen.
A note will appear at the bottom to guide you in
correcting the error.
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