Yaskawa GPD503 Drive - Manual (Page 116)

TROUBLESHOOTING CHART 7.2
MOTOR STALLS DURING ACCELERATION
ACCELERATION TIME
TOO SHORT?
YES
YES
YES
YES
YES
WITH GPD 503 IN
STOPPED CONDITION,
EXTEND ACCELER-
ATION TIME BY
REPROGRAMMING
bn-01 OR bn-03.
NO
NO
NO
NO
NO
LOAD TORQUE
TOO HIGH?
LOAD
INERTIA
LARGE?
CHECK IF SPECIAL
MOTOR IS USED.
V/F SELECTION
APPROPRIATE?
WITH GPD 503 IN
STOPPED CONDITION,
SET OPTIMUM V/F BY
REPROGRAMMING
Sn-02.
LARGE MOTOR
TERMINAL
VOLTAGE DROP?
- USE LARGER WIRE
BETWEEN GPD 503
AND MOTOR.
- SHORTEN WIRING
DISTANCE BETWEEN
GPD 503 AND MOTOR.
- DECREASE LOAD
INERTIA.
- EXTEND ACCEL-
ERATION TIME BY
REPROGRAMMING
bn-01 OR bn-03.
- DECREASE LOAD
TORQUE.
- REPLACE GPD 503
WITH ONE OF LARGER
CAPACITY.
7-4