YASKAWA Sigma-7 SGD7S Series - Page 607

Alarm Code Alarm Name Possible Cause Confirmation Correction Reference
The vibration detec-
tion level (Pn312 or
Pn384) is not suitable.
Check that the vibra-
tion detection level
(Pn312 or Pn384) is
suitable.
Set a suitable vibra-
tion detection level
(Pn312 or Pn384).
Ä Chap. 7.12
‘Initializing the
Vibration Detec-
tion Level’
page 246
A.521
(1521h)
Autotuning
Alarm (Vibration
was detected
while executing
the custom
tuning, Easy
FFT, or the
tuning-less
function.)
The Servomotor
vibrated considerably
while performing the
tuning-less function.
Check the waveform
of the motor speed.
Reduce the load so
that the moment of
inertia ratio is within
the allowable value.
Or increase the load
level or reduce the
rigidity level in the
tuning-less level set-
tings.
Ä Chap. 9.5
‘Tuning-less
Function’
page 303
The Servomotor
vibrated considerably
while performing
custom tuning or Easy
FFT.
Check the waveform
of the motor speed.
Check the operating
procedure of corre-
sponding function
and implement cor-
rections.
Ä Chap. 9.9
‘Custom Tuning’
page 350,
Ä Chap. 9.15.2
‘Easy FFT’
page 426
A.550
(1550h)
Maximum
Speed Setting
Error
The setting of Pn385
(Maximum Motor
Speed) is greater than
the maximum speed.
Check the setting of
Pn385, and the
upper limits of the
maximum motor
speed setting and
the encoder output
resolution setting.
Set Pn385 to a value
that does not exceed
the maximum motor
speed.
Ä Chap. 7.5
‘Setting the
Motor Maximum
Speed’
page 212
A.710
(1710h)
A.720
(1720h)
Instantaneous
Overload
Continuous
Overload
The wiring is not cor-
rect or there is a faulty
contact in the motor or
encoder wiring.
Check the wiring. Make sure that the
Servomotor and
encoder are correctly
wired.
Ä Chap. 5.5
‘Wiring Servo-
motors’
page 107
Operation was per-
formed that exceeded
the overload protec-
tion characteristics.
Check the motor
overload characteris-
tics and Run com-
mand.
Reconsider the load
and operating condi-
tions. Or, increase
the motor capacity.
–
An excessive load
was applied during
operation because the
Servomotor was not
driven due to mechan-
ical problems.
Check the operation
reference and motor
speed.
Correct the mechan-
ical problem.
–
There is an error in
the setting of Pn282
(Linear Encoder
Pitch).
Check the setting of
Pn282.
Correct the setting of
Pn282.
Ä Chap. 6.6
‘Setting the
Linear Encoder
Pitch’ page 146
There is an error in
the setting of Pn080 =
n.X (Motor
Phase Selection).
Check the setting of
Pn080 = n.X.
Set Pn080 =
n.X to an
appropriate value.
Ä Chap. 6.8
‘Selecting the
Phase
Sequence for a
Linear Servo-
motor’ page 154
Sigma-7 Series SERVOPACKs
Maintenance
Alarm Displays > Troubleshooting Alarms
| | PROFINET Communications - SIEP YEUOC7P 02A Revision 0 | en | 607