11-19
11-4 Troubleshooting
OMNUC G5-Series AC Servo Drives Users Manual (Built-in MECHATROLINK-II communications type)
11
Error and Maintenance
24 0 Error counter overflow
Position error pulses exceeded the
setting of the Error Counter Overflow
Level (Pn014).
• Motor operation does not follow the
command.
• The value of the Error Counter
Overflow Level (Pn014) is small.
• Check to see if the Servomotor
rotates according to the position
command pulse. Check on the
torque monitor to see if the output
torque is saturated. Adjust the
gain. Maximize the set values on
the No.1 Torque Limit (Pn013) and
the No.2 Torque Limit (Pn522).
Wire the encoder as shown in the
wiring diagram. Lengthen the
acceleration and deceleration
times. Reduce the load and the
speed.
• Increase the set value of object
Pn014.
25 0 Excessive hybrid error
During fully-closed control, the
difference between the load position
from the external encoder and the
Servomotor position from the encoder
was larger than the number of pulses
set for the Internal/External Feedback
Pulse Error Counter Overflow Level
(Pn328).
• Check the Servomotor and load
connection.
• Check the external encoder and
Servo Drive connection.
• When moving the load, check to
see if the change in the
Servomotor position (encoder
feedback value) has the same sign
as the change in the load position
(external encoder feedback value).
Check to see if the External
Feedback Pulse Dividing
Numerator and Denominator
(Pn324 and Pn325), and External
Feedback Pulse Direction
Switching (Pn326) are set
correctly.
26
0 Overspeed
The Servomotor rotation speed
exceeded the value set on the
Overspeed Detection Level Setting
(Pn513).
• Do not give excessive speed
commands.
• Check the input frequency, dividing
ratio, and multiplication ratio of the
command pulse.
• If overshooting occurred due to
faulty gain adjustment, adjust the
gain.
• Wire the encoder as shown in the
wiring diagram.
1 Overspeed 2
The Servomotor rotation speed
exceeded the value set for the
Overspeed Detection Level Setting at
Emergency Stop (Pn615).
Alarm
number
Name Cause Measures
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