YASKAWA SGM7D-30F Product Manual page 213

3.3 FT82 SERVOPACK with MECHATROLINK-III Communications References
3.3.7 Troubleshooting Based on the Operation and Conditions of the Servomotor
Problem
Position
Deviation
(without
Alarm)
Servomotor
Overheated
Estimating
the moment
of inertia
failed.
*
Refer to the following manual for details.
Σ-7-Series Σ-7S SERVOPACK with MECHATROLINK-III Communications References Product Manual
(Manual No.: SIEP S800001 28)
3-144
Possible Cause
Noise interference occurred
because an I/O signal cable
is too long.
An encoder fault occurred.
(The pulse count does not
change.)
A failure occurred in the SER-
VOPACK.
The surrounding air tempera-
ture is too high.
The surface of the Servomo-
tor is dirty.
There is an overload on the
Servomotor.
Polarity detection was not
performed correctly.
The acceleration rate is low
and travel distance is short.
Confirmation
Check the lengths of the
I/O signal cables.
–
–
Measure the surrounding
air temperature around
the Servomotor.
Visually check the surface
for dirt.
Check the load status
with a monitor.
Check to see if electrical
angle 2 (electrical angle
from polarity origin) at any
position is between ±10°.
Check the Condition Set-
ting Dialog Box used to
perform moment of inertia
estimation.
Continued from previous page.
Correction Reference
The I/O signal cables
must be no longer than
–
3 m.
Replace the Servomo-
–
tor.
Replace the SERVO-
–
PACK.
Reduce the surround-
ing air temperature to
–
40°C or less.
Clean dirt, dust, and oil
–
from the surface.
If the Servomotor is
overloaded, reduce the
load or replace the
Servo Drive with a
–
SERVOPACK and Ser-
vomotor with larger
capacities.
Correct the settings for
the polarity detection-
–
related parameters.
Increase the accelera-
tion rate and travel dis-
–
tance.