AL-1327 (ENCODER OVER SPEED)
An alarm
occurs.
Does the axis fall when
the servo is turned ON?
YesNo
Is it an axis with a brake?
NoYes
Turn the servo OFF when the
axis is in a position where the
axis does not fall when the
servo is ON.
Confirm that relay K13 of the XTU01
circuit board is not stuck or
disconnected. (See Fig. 15.)
Contact your Yaskawa
representative.
Remove connectors CNPG123 and
CNPG456 on the corresponding WRCA01
circuit board and re-insert them.
Alarm?
Yes No
Continue normal operation.
The defective encoder caused the alarm.
Replace the motor (encoder).
Alarm?
Yes No
SERVOPACK
Fig. 14
CNPG456
CNPG123
K14
K15 K13
XIU01-
!!
XTU01
Fig. 15
Alarm?
Yes No
Continue normal operation.
A faulty connection caused the alarm.
Continue normal operation.
The defective relay caused the alarm.
Continue normal operation.
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