Alarms 3301 To 3305 (Overcurrent); Alarms 3311 To 3315 (Mccb Trip); Alarms 3321 To 3325 (Regenerative Error) - YASKAWA YASNAC i80 Maintenance Manual

4.2 TROUBLESHOOTING BY ALARM CODES (Cent'd)

4.2.21 ALARMS 3301 TO 3305 (OVERCURRENT)

Causeof Trouble
Control board fault
Current feedback
circuit error
Main circuit
transistor module
error
Motor grounding

4.2.22 ALARMS 3311 TO 3315 (MCCB TRIP)

Causeof Trouble
Control board fault
Main circuit
thyristor-diode
m o d u l e e r r o r
MCCB failure
4.2.23 ALARMS 3321 TO 3325 (REGENERATIVE
Table 4.25
Causeof Trouble
Control board fault
Regenerative
Wire break in
regenerative resistor
Table 4.23 Alarms 3301 to 3305 (Overcurrent)
Check Method
Alarm occurs immediately after control power
is turned ON.
Alarm occurs after main power is turned ON.
MCCB is not tripped.
Alarm occurs after main power is turned ON.
Alarm occurs after main power is turned ON.
MCCB is tri~ped.
Table 4.24 Alarm s3311 to 3315 (MCCB Trip)
Check Method
Alarm occurs immediately after control power
is turned ON.
Alarm occurs after main power is turned ON.
Alarm occurs after main power is turned ON.
Check Method
Alarm occurs immediately after control power
is turned ON.
Alarm occurs 0.5 to 1 second after main power
is turned ON. MCCB is not tripped.
Alarm occurs after main power is turned ON.
Solution
Replace
Replace
SERVOPACK.
Replace
SERVOPACK.
Replace motor.
Solution
Replace
SERVOPACK.
Replace
SERVOPACK.
Replace
SERVOPACK.
Solution
SERVOPACK.
Replace
SERVOPACK.
Replace SERVOPACK.
Check regenerative
resistor and replace
if necessary.