Alarms 3061 To 3068 (Motor Overload); Alarms 3081 To 3088 (Pg Disconnection Error) - YASKAWA YASNAC i80 Maintenance Manual

4.2 TROUBLESHOOTING BY ALARM CODES (Cent'd)

4.2.13 ALARMS 3061 TO 3068 (MOTOR OVERLOAD)

Cause of Trouble
Cutting condition is too
severe.
Machine runs heavily
due to shortage of
lubricant on the guide fac~
of machine.
AC servo drive unit or
FC300B failure

4.2.14 ALARMS 3081 TO 3088 (PG DISCONNECTION ERROR)

Signal wire disconnection check of A and B phases from
PG.
Cause of Trouble
Disconnection or contact
failure of signal wire
between NC unit and AC
servo drive unit
Failure of PG detector
circuit connection
Motor model parameter
setting error.
96
Table 4.15
I
Check Method
Did it occur during drilling and/or
threadcutting ?
Check the oil film on the guide face.
Motor overload alarm activates even if
wiring is correct.
It may cause an alarm.
Table 4.16
Check Method
FC300B board's connectors CN30, CN31,
CN32.
Check looseness and removal of AC
servo drive unit connectors.
Perform wiring check according to
Connecting Manual (TOE-C843-11.5).
This type of alarm results when main
power is applied though result of check
for above items are normal.
Check if "O" is set to motor model
parameter (pm1061 to pm1068).
S o l u t i o n
Wait until temperature
of servo motor cools down.
Then, restart operation
by alleviating the condition.
Check oil tank and oil
pipe according to instruc-
tion manual of machine.
Replace AC Servo drive
unit or FC300B board.
Contact your YASKAWA
representative.
Solution
Correct looseness
and/or removal of
connectors.
Correct wiring as
necessary.
Replace FC300B.
Contact your YASKAWA
representative.
Set the motor model
parameter (pm1061 to