Komatsu 830E-AC Shop Manual page 845

M: Haul Cycle Too Long
The haul_cycle_too_long flag indicates that the haul
cycle took longer than 18.2 hours to complete. The
times stored for particular events may not be accu-
rate. This does not affect the payload calculation.
N: Sensor Input Error
An alarm was set for one of the 5 critical sensor
inputs during the haul cycle. The five critical sensors
are the four pressure sensors and the inclinometer.
Without these inputs, the payload meter cannot cal-
culate payload. A haul cycle with this warning flag
should not be considered accurate. Haul cycles with
this warning are displayed in red on the Payload
Summary window and are not included in the sum-
mary statistics for reports or display.
Frame Torque Data
Payload meter records the top 5 peak positive and
negative frame torque values and the time they
occurred. The frame torque is a measure of the twist-
ing action along the centerline of the truck. Positive
frame torque is measured when the suspension
forces on the front of the truck act to twist the frame
in the clockwise direction as viewed from the opera-
tor's seat. Negative frame torque is measured when
the forces from the suspensions act in the opposite
direction.
For example, if the left front and right rear pressure
rises as the right front and left rear pressure drops,
the truck frame experiences a twisting motion along
the longitudinal centerline. In this case, the payload
meter will record a positive frame torque.
The 5 highest values in the positive and negative
direction are stored in permanent memory within the
payload meter.
M20008 02/05
Sprung Weight Data
The payload meter is constantly monitoring the live
payload calculation. This value naturally rises and
falls for a loaded truck depending on road and driving
conditions. The payload meter records the top 5
highest payload calculations and the time they
occurred. This information is stored in permanent
memory inside the meter.
Maximum Speed Data
The payload meter records the top 5 highest speeds
and the time they occurred. This information is stored
in permanent memory inside the meter.
Alarm Records
The payload meter stores alarm records to give ser-
vice personnel a working history of the system. All
codes are viewed using the PC connected to the
payload meter. Active codes are also displayed on
the two-digit display on the meter itself. Each code
has a specific cause and should lead to an investiga-
tion for correction. Some failures can be overcome
by the payload meter. Haul cycle data will indicate if
an alarm condition was present during the cycle. Fail-
ures with the suspension or inclinometer sensors
cannot be overcome.
Payload Meter III M20-17