Puf - Dc Bus Fuse Open - Veikong gpd 515/g5 Startup Manual

TROUBLESHOOTING CHART 6.6
" PUF – DC Bus Fuse Open " FAULT INDICATION
DISCONNECT LEADS FROM
OUTPUT TERMINALS
T1(U), T2(V) AND T3(W).
ARE MOTOR WINDINGS
SHORTED (T1 TO T2,
T2 TO T3, OR T3 TO T1)?
ARE DRIVE
OUTPUT PHASES
SHORTED TO GROUND?
T1(U), T2(V), T3(W) TO G(E).
CHECK POWER TRANSISTORS
(SEE PARAGRAPH 6.5).
ARE TRANSISTORS
DAMAGED?
DRIVE
IS FAULTY.
DO NOT REPLACE DC BUS FUSE WITHOUT
FIRST CHECKING OUTPUT TRANSISTORS.
YES
NO
YES
NO
YES
NO
CAUTION
6-17
MOTOR
IS FAULTY.
LOCATE AND
REMOVE SHORT.
REPLACE
DAMAGED POWER
TRANSISTORS.