Yaskawa SGDH Linear Sigma Series - Manual (Page 368)

11 Inspection, Maintenance, and Troubleshooting
11.1.5 Troubleshooting of Alarm and Warning
11-16
(2) Warning Display and Troubleshooting
Table 11.6 Warning Display and Troubleshooting
Warning
Display
Warning Name Situation at Warning
Occurrence
Cause Corrective Actions
A.90 Excessive Position
Error Occurred during nor-
mal operation. The position error exceeded the setting of param-
eter Pn51E. When the position error becomes within
the setting of Pn51E, the SERVOPACK
will be automatically restored.
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. Occurred when the con-
trol power supply was
turned ON. When the control power was previously turned
OFF, an overload alarm occurred. No problem exists because the SERVO-
PACK saves the previous value.
Occurs when the servo
was ON. Wiring is incorrect and the contact in servomotor
wiring is faulty. Correct the servomotor wiring.
Wiring is incorrect and the contact in encoder
wiring is faulty. Correct the encoder wiring.
A SERVOPACK fault occurred. Replace the SERVOPACK.
The servomotor did not
run with a reference
input. Servomotor wiring is incorrect and the contact is
faulty. Correct the servomotor wiring.
Encoder wiring is incorrect and the contact is
faulty. Correct the encoder wiring.
The starting force exceeds the maximum force. Reconsider the load and operation condi-
tions. Or, check the servomotor capacity.
The polarity detection is not performed properly.
(When Pn080.0 = 1 is set.) Correct the settings for the polarity detec-
tion related parameter.
A SERVOPACK fault occurred. Replace the SERVOPACK.
Occurred during nor-
mal operation. The effective force exceeds the rated force. Reconsider the load and operation condi-
tions. Or, check the servomotor capacity.
Temperature in the SERVOPACK panel is high. Reduce the in-panel temperature to 55 °C
or less.
A SERVOPACK fault occurred. Replace the SERVOPACK.
A.92 Regenerative
Overload:
Warning for the
alarm A32 Occurred when the con-
trol power supply was
turned ON. A SERVOPACK fault occurred. Replace the SERVOPACK.
Occurred during nor-
mal operation
(Large increase of
regenerative resistor
temperature.) Regenerative energy is excessive. Check the regenerative resistor capacity,
or reconsider the load and operation con-
ditions.
Regenerative status continues.
Occurred during nor-
mal operation
(Small increase of
regenerative resistor
temperature). The setting of parameter Pn600 is smaller than
the external regenerative resistor capacity. Correct the setting of parameter Pn600.
A SERVOPACK fault occurred. Replace the SERVOPACK.
Occurred at servomo-
tor deceleration. Regenerative energy is excessive. Check the regenerative resistor capacity,
or reconsider the load and operation con-
ditions.