Alarms 3351 To 3355 (Heat Sink Overheat); Alarms 3321 To 3325 (Regenerative Error); Alarms 3341 T03345 ( Undervoltage ); Alarnis 3331 To 3335 (Overvoltage) - YASKAWA YASNAC i80 Maintenance Manual

4.2.24 ALARMS 3331 TO 3335 (OVERVOLTAGE)
Causeof Trouble I
Excess load
Regenerative
processing circuit
error
ALARMS 3341 TO 3345 (UNDERVOLTAGE)
4.2.25
Cause of Trouble
Main circuit
th yristor-diode
module error

4.2.26 ALARMS 3351 TO 3355 (HEAT SINK OVERHEAT)

Table 4.28
Cause of Trouble
Control board fault
Fan stops
High ambient
temperature near
(over 55°C 131°F)
Motor circuit
connection error
Table 4.26 Alarms 3331 to 3335 (Overvoltage)
Check Method
Alarm occurs when motor is started or slowed
down.
Alarm occurs when motor is started or slowed
down.
Table 4.27 Alarms 3341 to 3345 (Undervoltage)
Check Method
Alarm occurs after main circuit power is turned Replace
ON.
Alarms 3351 to 3355 (Heat Sink Overheat)
Check Method
Alarm occurs immediately after control power
Alarm occurs during operation. (If control
power is turned OFF and then immediately
turned ON again, alarm remains ON. Operation
can be restarted only if system is reset after a
while. )
Alarm occurs during operation. (If control
power is turned OFF and then immediately
Operation can be restarted only if system is
reset after a while. )
Motor turns at low torque. Alarm occurs
after a while.
I
Solution
Check load machine
inertia converted
into motor axis.
Replace
Solution
SERVOPACK.
S o l u t i o n
s running.
Take necessary
action to lower
servopack ambient
temperature.
Connect properly.
101