YASKAWA SGLFW User Manual page 391

11 Inspection, Maintenance, and Troubleshooting
11.1.5 Troubleshooting of Alarm and Warning
(2) Warning Display and Troubleshooting
Warning Warning Name
Display
Excessive Potion
A.90
Error
A.91 Overload:
Warning for the
alarms A71 and
A72
In either of the fol-
lowing cases:
1. 20% of the
overload detection
level of A71
2. 20% of the
overload detection
level of A72.
A.92
Regenerative
Overload:
Warning for the
alarm A320
11-16
Table 11.6 Warning Display and Troubleshooting
Situation at Warning
Occurrence
Occurred during nor- The position error exceeded the setting of param-
eter Pn51E.
mal operation.
Occurred when the con- When the control power was previously turned
trol power supply was OFF, an overload alarm occurred.
turned ON.
Occurs when the servo Wiring is incorrect and the contact in servomotor
was ON. wiring is faulty.
Wiring is incorrect and the contact in encoder
wiring is faulty.
A SERVOPACK fault occurred.
The servomotor did not Servomotor wiring is incorrect and the contact is
run with a reference faulty.
input.
Encoder wiring is incorrect and the contact is
faulty.
The starting force exceeds the maximum force.
The polarity detection is not performed properly.
(When Pn080.0 = 1 is set.)
A SERVOPACK fault occurred.
Occurred during nor- The effective force exceeds the rated force.
mal operation.
Temperature in the SERVOPACK panel is high.
A SERVOPACK fault occurred.
Occurred when the con- A SERVOPACK fault occurred.
trol power supply was
turned ON.
Occurred during nor- Regenerative energy is excessive.
mal operation
Regenerative status continues.
(Large increase of
regenerative resistor
temperature.)
Occurred during nor- The setting of parameter Pn600 is smaller than
mal operation the external regenerative resistor capacity.
(Small increase of
A SERVOPACK fault occurred.
regenerative resistor
temperature).
Occurred at servomo- Regenerative energy is excessive.
tor deceleration.
Cause
When the position error becomes within
the setting of Pn51E, the SERVOPACK
will be automatically restored.
No problem exists because the
SERVOPACK saves the previous value.
Correct the servomotor wiring.
Correct the encoder wiring.
Replace the SERVOPACK.
Correct the servomotor wiring.
Correct the encoder wiring.
Reconsider the load and operation condi-
tions. Or, check the servomotor capacity.
Correct the settings for the polarity detec-
tion related parameter.
Replace the SERVOPACK.
Reconsider the load and operation condi-
tions. Or, check the servomotor capacity.
Reduce the in-panel temperature to 55°C
or less.
Replace the SERVOPACK.
Replace the SERVOPACK.
Check the regenerative resistor capacity,
or reconsider the load and operation con-
ditions.
Correct the setting of parameter Pn600.
Replace the SERVOPACK.
Check the regenerative resistor capacity,
or reconsider the load and operation con-
ditions.
Corrective Actions