Yaskawa i80M Maintenance Manual - Manual (Page 107)

4.2.19 ALARMS 3181 TO 3188 (POSITION ERRORS)
Malfunction of PG pulse counter inside absolute encoder
is detected.
Table 4.21 Alarms 3181 to 3188 (Position Errors)
Cause of Trouble
I
Check Method
I
Solution
Failure of model Check whether the alarm is caused by mere Replace model
JANCD-FC300B board application of control power. FC300B board.
Erroneous wiring Check A, B, and C phase pulses using If erroneous wiring is
of encoder monitor board. found, correct the
Malfunction of PG Check whether the alarm occurs frequently
●
Restart operation after
pulse counter inside during operation. turning power OFF,
absolute encoder (due then ON again.
to noise)
●
Take appropriate
corrective action for
noise.
a
A
4.2.20 ALARMS 3201 TO 3208 (SERVODRIVE UNIT
COMMUNICATION ERRORS)
Serial communication error between NC and AC
servodrive unit is detected.
Table 4.22 Alarms 3201 to 3208 (Servodrive Unit Communication Errors)
Cause of Trouble Check Method Solution
Erroneous wiring Check wiring according to YASNAC i80 Refer to Section 11 of
Connecting Manual YASNAC i80 Connecting
Manual
and correct the wiring.
Wrong setting of AC Check setting of ID switch of AC servo drive Refer to Section 11 of
servo drive unit ID unit according to YASNAC i80 Connecting YASNAC i80 Connecting
switch Manual Manual
and correct the setting.
Defective AC servodrive Check whether the alarm occurs when the Replace model
unit or wiring and ID switch are not erroneous. FC300B board or AC servo
FC300B board drive unit.
Contact your YASKAWA
representative.
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