Komatsu 830E-AC Shop Manual page 1000

VEHICLE HEALTH MONITORING
SYSTEM (VHMS)
Operation
This system uses VHMS controller (2, Figure 5-10) to
gather data about the operation of the truck from
sensors and other controllers installed on the truck.
The data stored in the VHMS controller is collected
by a laptop personal computer (PC) or transmitted
directly by communications satellite (utilizing the Orb-
comm controller). This data is then compiled at the
Komatsu computer server. Based on this information,
the servicing Komatsu distributor will suggest
improvements and provide information aimed at
reducing machine repair costs and downtime.
When the data-store button (1, Figure 5-9) is pressed
on the back side of the center console, it will store a
"snapshot" of the Statex III drive system. It will also
trigger the VHMS system to store a "snapshot" of the
truck operating system. A light (2, Figure 5-9) will
stay illuminated while the VHMS system is recording
the "snapshot", which lasts for 7.5 minutes.
The VHMS system is turned on by the truck key
switch. Immediately after receiving 24V power from
the key switch, the VHMS controller begins the
power-up initialization sequence. This sequence
takes about three seconds, during which time the red
LED digits (4, Figure 5-10) display a circular
sequence of flashing LED segments.
FIGURE 5-9. CENTER CONSOLE, REAR VIEW
1. Data Store Button
2. VHMS Snapshot In Progress Light
N5-28
During normal truck operation, the red LED digits on
the VHMS controller will count from 00-99 continu-
ously.
When the key switch is turned OFF, the VHMS con-
troller will remain on while it finishes processing inter-
nal data and saves the recent data into permanent
memory. When the data has been safely stored, the
two digit LED display will turn OFF. This process
could take up to three minutes to complete.
If 24V power is disconnected (using the battery
disconnect switches) from the VHMS controller
before it has completed it's shut down proce-
dure, the VHMS controller will lose all data gath-
ered since the key switch was last turned ON. Do
not disconnect battery power until the VHMS
controller has completed the shut down proce-
dure and has turned the LED digits off.
FIGURE 5-10. VHMS COMPONENT LOCATION
1. Orbcomm Controller
2. VHMS Controller
3. Interface Module
Operator Controls
4. Red LED Lights
5. Green LED Light
10/06 N05070