YASKAWA E-S Series - Page 235

10.1 Alarm and Warning Displays
10.1.3 Troubleshooting Alarms
10-9
10
Maintenance
A.710:
Instantaneous
Overload
A.720:
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 Ser-
vomotor and encoder
are correctly wired.
page 4-11
Operation was per-
formed that exceeded
the overload protec-
tion characteristics.
Check the motor overload
characteristics and Run
command.
Reconsider the load
and operating condi-
tions. Or, increase the
motor capacity.
−
An excessive load was
applied during opera-
tion because the Ser-
vomotor was not
driven due to mechani-
cal problems.
Check the operation refer-
ence and motor speed.
Correct the mechanical
problem.
−
A failure occurred in
the SERVOPACK.
−
The SERVOPACK may
be faulty. Replace the
SERVOPACK.
−
An unsupported Servo-
motor was selected in
the parameters.
Check the setting of
Pn08A (Motor Selection
Switch).
Set Pn08A (Motor
Selection Switch) cor-
rectly.
−
Continued on next page.
Continued from previous page.
Alarm Number:
Alarm Name
Possible Cause Confirmation Correction
Reference
for
Correction