YASKAWA SGDV User Manual page 273

9 Troubleshooting
9.1.2 Troubleshooting of Alarms
Alarm Number:
Alarm Name
(Alarm Description)
*3
A.d02 :
Position Error
Overflow Alarm by
Speed Limit at Servo
ON
CPF00:
Digital Operator
Transmission Error 1
CPF01:
Digital Operator
Transmission Error 2
∗3. This alarm will occur only for a SERVOPACK for pulse train references.
9-14
Cause
When the position errors remain
in the error counter, Pn529 limits
the speed if the servomotor power
is ON. If Pn529 limits the speed
in such a state, this alarm occurs
when reference pulses are input
and the number of position errors
exceeds the value set for the
excessive position error alarm
level (Pn520).
The contact between the digital
operator and the SERVOPACK is
faulty.
Malfunction caused by noise
interference.
A digital operator fault occurred. −
A SERVOPACK fault occurred.
Investigative Actions
−
Check the connector contact.
−
−
(cont'd)
Corrective Actions
Set position error to be cleared
while the servomotor power is OFF.
Or, correct the excessive position
error alarm level (Pn520).
Or, adjust the speed limit level at
servo ON (Pn529).
Insert securely the connector or
replace the cable.
Keep the digital operator or the
cable away from noise sources.
Disconnect the digital operator and
then re-connect it. If the alarm still
occurs, the digital operator may be
faulty. Replace the digital operator.
Restart the SERVOPACK. If the
alarm still occurs, the SERVO-
PACK may be faulty. Replace the
SERVOPACK.