YASKAWA SGD7S-1R9D Product Manual page 499

Alarm Code:
Possible Cause
Alarm Name
Abnormal oscillation
was detected in the
motor speed.
The setting of Pn103
(2103 hex) (Moment
520 hex: of Inertia Ratio) is
greater than the
Vibration Alarm
actual moment of
inertia or was greatly
changed.
The vibration detec-
tion level (Pn312 or
Pn384) is not suitable.
The Servomotor
521 hex:
vibrated considerably
Autotuning Alarm
while performing the
(Vibration was
tuning-less function.
detected while
executing the
custom tuning,
The Servomotor
Easy FFT, or the
vibrated considerably
tuning-less func-
while performing cus-
tion.)
tom tuning or Easy
FFT.
The setting of Pn385
550 hex:
(2385 hex) (Maximum
Motor Speed) is
Maximum Speed
greater than the maxi-
Setting Error
mum speed.
The wiring is not cor-
rect or there is a faulty
contact in the motor
or encoder wiring.
Operation was per-
formed that exceeded
the overload protec-
tion characteristics.
An excessive load
was applied during
operation because the
710 hex:
Servomotor was not
Instantaneous
driven due to
Overload
mechanical problems.
720 hex:
Continuous There is an error in the
Overload setting of Pn282
(2282 hex) (Linear
Encoder Pitch).
There is an error in the
setting of Pn080
(2080 hex) =
n.X (Motor
Phase Selection).
A failure occurred in
the SERVOPACK.
Confirmation
Check for abnormal
Reduce the motor speed.
motor noise, and check
Or, reduce the setting of
the speed and torque
Pn100 (2100 hex) (Speed
waveforms during oper-
Loop Gain).
ation.
Check the moment of
Correct the setting of
inertia ratio or mass
Pn103 (2103 hex).
ratio.
Check that the vibra-
Set a suitable vibration
tion detection level
detection level (Pn312 or
(Pn312 or Pn384) is
Pn384).
suitable.
Reduce the load so that
the moment of inertia ratio
is within the allowable
Check the waveform of
value. Or increase the
the motor speed.
load level or reduce the
rigidity level in the tuning-
less level settings.
Check the operating pro-
Check the waveform of cedure of corresponding
the motor speed. function and implement
corrections.
Check the setting of
Pn385 (2385 hex), and
Set Pn385 (2385 hex) to a
the upper limits of the
value that does not
maximum motor speed
exceed the maximum
setting and the encoder
motor speed.
output resolution set-
ting.
Make sure that the Servo-
Check the wiring. motor and encoder are
correctly wired.
Reconsider the load and
Check the motor over-
operating conditions. Or,
load characteristics and
increase the motor
Run command.
capacity.
Check the operation
Correct the mechanical
reference and motor
problem.
speed.
Check the setting of Correct the setting of
Pn282 (2282 hex). Pn282 (2282 hex).
Check the setting of Set Pn080 (2080 hex) =
Pn080 (2080 hex) = n.X to an appropri-
n.X. ate value.
The SERVOPACK may be
– faulty. Replace the SER-
VOPACK.
15.2 Alarm Displays
15.2.2 Troubleshooting Alarms
Continued from previous page.
Correction Reference
page 8-76
page 8-16
page 6-46
page 8-13
page 8-41,
page 8-92
page 6-17
page 4-19
–
–
page 5-15
page 5-20
–
Continued on next page.
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