Alarms 3181 To 3188 (Position Errors); Alarms 3201 To 3208 (Servodrive Unit Communication Errors) - YASKAWA YASNAC i80 Maintenance Manual

4.2.19 ALARMS 3181 TO 3188 (POSITION ERRORS)

Malfunction of PG pulse counter inside absolute encoder
is detected.
Cause
of Trouble
Failure of model
JANCD-FC300B board
Erroneous wiring
of encoder
Malfunction of PG
pulse counter inside
absolute encoder (due
to noise)
ALARMS 3201 TO 3208 (SERVODRIVE UNIT
4.2.20
COMMUNICATION ERRORS)
Serial communication error between NC and AC
servodrive unit is detected.
Table 4.22
Cause of Trouble
Erroneous wiring
Wrong setting of AC
servo drive unit ID
switch
Defective AC servodrive Check whether the alarm occurs when the
unit or modd-JANCD-
FC300B board
Table 4.21
Alarms 3181 to 3188 (Position Errors)
Check Method
I
Check whether the alarm is caused by mere
application of control power.
Check A, B, and C phase pulses using
Check whether the alarm occurs frequently
during operation.

Alarms 3201 to 3208 (Servodrive Unit Communication Errors)

Check Method
Check wiring according to YASNAC i80
Connecting Manual (TOE-C843-11.5).
Check setting of ID switch of AC servo drive Refer to Section 11 of
unit according to YASNAC i80 Connecting
Manual (TOE-C843-11.5).
wiring and ID switch are not erroneous.
I
Solution
Replace model JANCD-
FC300B board.
If erroneous wiring is
Restart operation after
turning power OFF,
then ON again.
Take appropriate
corrective action for
noise.
Solution
Refer to Section 11 of
YASNAC i80 Connecting
Manual (TOE-C843-11.5)
and correct the wiring.
YASNAC i80 Connecting
Manual (TOE-C843-11.5)
and correct the setting.
Replace model JANCD-
FC300B board or AC servo
drive unit.
Contact your YASKAWA
representative.
A
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