Komatsu 830E-AC Shop Manual page 435

SYSTEM CHECKOUT
Test equipment that is required to fully test the AC drive
system:
•
One or two Portable Test Units (PTU) or laptop
computers
•
One digital multimeter
•
Several jumper wires
•
One analog VOM
•
One 500 volt megger
The Portable Test Unit (PTU) is used to test, download
and record system parameters on the TCI and PSC
modules.
•
The PTU is plugged into the DIAG1 port on the
DID panel at the rear of the operator cab for
monitoring the PSC module.
•
The PTU is plugged into the DIAG3 port on the
DID panel at the rear of the operator cab for
monitoring the TCI module.
The TCI and PSC are programmed through the DB9
ports on the DID panel. The inverter cards are
programmed through the DB9 ports on the ICP panel.
NOTE: If only one PTU is available, in some cases it
will be necessary to switch between the PSC port and
the TCI port to complete the test if it is necessary to
monitor both during a test procedure. After the serial
cable has been switched, exit to the Main Menu and
the software will automatically switch to the menu for
the connected panel.
Several different numbering methods or symbols are
used in the following procedures to denote the
operation to be performed:
1., 2., a., b., etc: Test preparation and instruction steps
are preceded by a number or a letter.
Procedures requiring visual checks, voltage
measurements, etc, are preceded by this
symbol.
PTU keyboard entry steps are preceded by this
symbol.
{escape}: When a keyboard key must be pressed, the
key label is enclosed in braces.
• PTU screen display information is
shown in this type font and
preceded by this symbol.
NOTE: The following test procedures are applicable to
Release 20 software. Procedures required for later
software versions may vary. Contact the Komatsu
distributor or factory representative for the current
software version available.
E03018 10/06
Battery and Control Circuit Checks -
Battery Power OFF
Make sure that the link voltage is drained down
before
performing tests.
AC Drive System Electrical Checkout Procedure
(Release 21 Software)
servicing the propulsion
1. Prepare for the following checks by performing
the following procedure:
a. Turn both battery disconnect switches to the
OFF position.
b. Disconnect circuit wire 21B from the starter
solenoid.
c. Remove the 50 amp fuse (BATFU) from the left
wall of the right side compartment of the
control cabinet.
d. Disconnect the CN1 connector from the power
supply on the right wall of the right side
compartment of the control cabinet.
e. Open the ICP panel and slide the cards out far
enough to disconnect
backplane.
f. Turn off all circuit breakers in the auxiliary
control cabinet.
g. Make sure that the key switch is OFF, the 5
minute delay timer is OFF, and the rest switch
is ON.
h. Turn off all lights and switches.
system or
them from the
E3-5