YASKAWA FS100 Maintenance Manual page 241

Alarm Alarm Name Sub
Number Code
4334 OVERVOLTAGE
(CONVERTER)
4336 OPEN PHASE
(CONVERTER)
Meaning Cause
Connection failure
Module failure
Servo control board failure
Sub Code: Signifies the physical Connection failure
No. of converter in which the
alarm occurred
Setting error
Voltage failure
Module failure (Regenerative
resistor)
Module failure (converter)
Servo control board failure
Sub Code: Signifies the physical Connection failure
No. of converter in which the
alarm occurred
Voltage failure
Module failure (converter)
Servo control board failure
Remedy
(1)Reset the alarm.
(2)If the alarm occurs again, check that U-, V- and W-phase are appropriately
connected.
(motor) (1)Reset the alarm.
(2)If the alarm occurs again, replace the motor.
(1)Reset the alarm.
(2)If the alarm occurs again, replace controller. Save the CMOS.BIN before
replace controller to be safe.
(1)Reset the alarm.
(2)If the alarm occurs again, replace controller. Save the CMOS.BIN before
replace controller to be safe.
Check the following settings.
·The tools or the mass of the workpieces
Modify the primary breaker voltage to the specified voltage 200V(+10% to
15%).
(1)Reset the alarm.
(2)If the alarm occurs again, replace controller. Save the CMOS.BIN before
replace controller to be safe.
(1)Reset the alarm.
(2)If the alarm occurs again, replace controller. Save the CMOS.BIN before
replace controller to be safe.
(1)Reset the alarm.
(2)If the alarm occurs again, replace controller. Save the CMOS.BIN before
replace controller to be safe.
(1)Reset the alarm.
(2)If the alarm occurs again, replace controller. Save the CMOS.BIN before
replace controller to be safe.
Modify the primary breaker voltage to the specified voltage 200V(+10% to
15%).
(1)Reset the alarm.
(2)If the alarm occurs again, replace controller. Save the CMOS.BIN before
replace controller to be safe.
(1)Reset the alarm.
(2)If the alarm occurs again, replace controller. Save the CMOS.BIN before
replace controller to be safe.
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