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11 Inspection, Maintenance, and Troubleshooting
11.2.3 Troubleshooting of the Servo Drive Alarms
11-30
A.D02:
Position Error Pulse
Overflow Alarm by
Speed Limit at Servo
ON
After a position error pulse has
been input, Pn529 limits the
speed if the SV_ON command is
received. If Pn529 limits the
speed in such a state, this alarm
occurs when the position refer-
ences are input and the number of
position error pulses exceeds the
value set for parameter Pn520
(Excessive Position Error Alarm
Level).
–
Correct the excessive position error
alarm level (Pn520).
Or, adjust the speed limit level at
servo turns ON (Pn529).
A.D10:
Motor-load Position
Error Overflow
Motor rotation direction and
external encoder installation
direction are opposite.
Check the servomotor rotation
direction and the external encoder
installation direction.
Install the external encoder in the
opposite direction, or change the
setting of the external encoder
usage method (Pn002.3) to reverse
the direction.
Mounting of the load (e.g., stage)
and external encoder joint instal-
lation are incorrect.
Check the external encoder
mechanical connection.
Check the mechanical joints.
A.E00:
System Alarm 5
SERVOPACK failure
–
The SERVOPACK may be faulty.
Replace the SERVOPACK.
A setting on the DIP switch (S3)
was changed.
Check the DIP switch settings.
Turn OFF all pins on the DIP switch
(S3).
A.E02:
System Alarm 6
SERVOPACK failure
−
The SERVOPACK may be faulty.
Replace the SERVOPACK.
A.E03:
System Alarm 7
A.E61:
System Alarm 8
A.EB1:
HWBB Function
Signal Input Timing
Error
The lag between activations of
the input signals /HWBB1 and
/HWBB2 for the HWBB function
is 10 second or more.
Measure the time lag between the
/HWBB1 and /HWBB2 signals.
The output signal circuits or devices
for /HWBB1 and /HWBB2
or the SERVOPACK input signal
circuits may be faulty. Alterna-
tively, the input signal cables may
be disconnected. Repair or replace
them.
A.EEA:
Converter Local Bus
WD Error
(A power regeneration
converter local bus WD
alarm occurred.)
The local bus cable of the power
regeneration converter is either
disconnected or a has a contact
fault.
Check the local bus cable.
Either re-install the local bus cable
or replace it.
Malfunction caused by noise
Improve the noise environment,
including the wiring and installa-
tion, and check to see if the alarm
occurs again.
Install the local bus cable away
from the peripheral equipment, or
replace it with a cable that has a fer-
rite core.
The terminator circuit inside the
power regeneration converter has
failed.
−
Turn the power supply OFF and
then ON again. If the alarm still
occurs, the power regeneration con-
verter may be faulty. Replace the
power regeneration converter.
(cont’d)
Alarm:
Alarm Name
Cause
Investigative Actions
Corrective Actions