YASKAWA GPD-506V

OVERLOAD ( oL ) FAULT INDICATION
LOAD TOO LARGE
(MOTOR OVERHEATED)?
YES
YES
YES
YES
YES
DECREASE LOAD
WITHIN RATING.
CHECK MOTOR
AND LOAD.
NO
NO
NO
NO
NO
V/F SELECTION
APPROPRIATE?
WITH DRIVE IN
STOPPED CONDITION,
REPROGRAM n011 - n017
TO PROPER V/f PATTERN.
YES
NO
MORE THAN ONE
MOTOR ON THE
DRIVE?
WITH DRIVE IN STOPPED
CONDITION, REPROGRAM
n034 TO " 0 " TO DISABLE
THERMAL MOTOR OVERLOAD
PROTECTION CIRCUIT. THEN
INSTALL A THERMAL RELAY
OR THERMAL PROTECTOR
FOR EACH MOTOR.
WITH DRIVE IN
STOPPED CONDITION,
REPROGRAM n033 .
IS ELECTRONIC THERMAL
OVERLOAD (n033 )
SET CORRECTLY?
DISCONNECT WIRING FROM
OUTPUT TERMINALS T1 (U),
T2 (V) AND T3 (W). IS OL
STILL INDICATED?
REMOVE NOISE SOURCE:
• CONNECT SURGE
SUPPRESSOR TO RELAY
AND MAGNETIC CON-
TACTOR COILS.
• PROVIDE LINE FILTER
TO REMOVE NOISE ON
INPUT POWER LINE.
CONTROL PCB OR GATE
DRIVE PCB IS FAULTY.
REPLACE FAULTY BOARD.
ERRONEOUS OPERATION
DUE TO NOISE?
6-12
TROUBLESHOOTING CHART 6.6