Yaskawa GPD503 Drive - Manual (Page 115)

TROUBLESHOOTING CHART 7.1 (Continued)
A
FROM
PRECEDING
PAGE
PROPER FREQUENCY
REFERENCE INPUT?
(TERMINAL 17(-) TO 13,
14 OR 16)
NO
NO
NO
NO
NO
CHECK EXTERNAL
CIRCUITS FOR
PROBLEM AND
REPAIR.
YES
VOLTAGE PRESENT ACROSS
OUTPUT TERMINALS
T1 (U), T2 (V) AND T3 (W)?
VOLTAGE PRESENT AT
MOTOR TERMINALS
T1 (U), T2 (V) AND T3 (W)?
VOLTAGE BALANCED
(WITHIN 2%)
BETWEEN PHASES, AT
T1 (U), T2 (V) AND T3 (W)?
GPD 503
IS FAULTY.
YES
YES
YES
YES
CHECK WIRING
BETWEEN
GPD 503
AND MOTOR.
GPD 503
IS FAULTY.
LOAD TORQUE
TOO LARGE?
- WITH GPD 503 IN
STOPPED CONDITION,
SELECT INCREASED
V/F BY REPROGRAM-
MING Sn-02.
- REDUCE LOAD
TORQUE (DISCON-
NECT LOAD).
- REPLACE GPD 503
WITH ONE OF LARGER
CAPACITY.
MOTOR
IS FAULTY.
7-3