Yaskawa Sigma II Series DC Power Input SGMAJ - Manual (Page 293)

10 Inspection, Maintenance, and Troubleshooting
10.1.3 Troubleshooting of Alarm and Warning
10-12
(2) Warning Display and Troubleshooting
Table 10.4 Warning Display and Troubleshooting
Warning
Display
Warning Name Situation at Warning
Occurrence
Cause Corrective Actions
A.91 Overload:
Warning for the
alarms A71 and
A72
In either of the fol-
lowing cases:
1. 20% of the over-
load detection level
of A71
2. 20% of the over-
load detection level
of A72. 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 torque exceeds the maximum torque. Reconsider the load and operation condi-
tions. Or, check the servomotor capacity.
A SERVOPACK fault occurred. Replace the SERVOPACK.
Occurred during nor-
mal operation. The effective torque exceeds the rated torque. 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.93 Absolute Encoder
Battery Warning
(The battery voltage
stays below the
specified value 4
seconds after the
control power sup-
ply was turned ON.)
(Only when an
absolute encoder is
connected.) Occurred when the con-
trol power supply was
turned ON
(Setting: Pn002.2=1). A SERVOPACK board fault occurred. (The abso-
lute encoder is used in the incremental encoder
setting.) Replace the SERVOPACK.
Occurred 4 seconds or
more after the control
power supply was
turned ON
(Setting: Pn002.2=0).
When an absolute
encoder was used. The battery connection is incorrect or faulty. Connect correctly the battery.
The battery voltage is lower than the specified
value 2.7 V. Replace the battery, and turn OFF the
encoder power supply and ON again.
A SERVOPACK board fault occurred. Replace the SERVOPACK.