Troubleshooting Warnings - YASKAWA SGD7S-xxxDA0 series Product Manual

Warning
Code
93Bh Overheat Warning
Speed Ripple Com-
942h pensation Information
Disagreement
971h Undervoltage
9A0h Overtravel
Preventative Mainte-
9b0h
nance Warning
Note: Use Pn008 (2008h) = n.X (Warning Detection Selection) to control warning detection.
However, the following warnings are not affected by the setting of Pn008 (2008h) = n.X and other
parameter settings are required in addition to Pn008 (2008h) = n.X.
Warning
911h
930h
942h
971h
9A0h
9b0h
16.3.2

Troubleshooting Warnings

The causes of and corrections for the warnings are given in the following table. Contact your
Yaskawa representative if you cannot solve a problem with the correction given in the table.
Warning Number:
Warning Name
900h:
Position Deviation
Overflow
Warning Name
The input voltage (temperature) for the overheat protection input (TH) sig-
nal exceeded the setting of Pn61C (261Ch) (Overheat Warning Level).
The speed ripple compensation information stored in the encoder does
not agree with the speed ripple compensation information stored in the
SERVOPACK.
This warning occurs before an A.410 alarm (Undervoltage) occurs. If the
warning is ignored and operation is continued, an alarm may occur.
Overtravel was detected while the servo was ON.
One of the consumable parts has reached the end of its service life.
Parameters That Must Be Set to Select Warning Detection
Pn310 (2310h) = n.X (Vibration Detection Setting)
Pn008 (2008h) = n.X (Low Battery Voltage Alarm/Warning Selec-
tion)
Pn423 (2423h) = n.X (Speed Ripple Compensation Information
Disagreement Warning Detection Selection)
Pn008 (2008h) = n.X (Function Selection for Undervoltage)
(Not affected by the setting of Pn008 (2008h) = n.X.)
Pn00D (200Dh) = n.X (Overtravel Warning Detection Selection)
(Not affected by the setting of Pn008 (2008h) = n.X.)
Pn00F (200Fh) = n.X (Preventative Maintenance Selection)
Possible Cause
The Servomotor
U, V, and W wiring
is not correct.
A SERVOPACK
gain is too low.
The acceleration
of the position ref-
erence is too high.
The excessive
position deviation
alarm level (Pn520
(2520h) × Pn51E
(251Eh)/100) is
too low for the
operating condi-
tions.
A failure occurred
in the SERVO-
PACK.
Meaning
Confirmation
Make sure that there are no
Check the wiring of the
faulty connections in the
Servomotor's Main Cir-
wiring for the Servomotor
cuit Cables.
and encoder.
Increase the servo gain,
Check the SERVO-
e.g., by using autotuning
PACK gains.
without a host reference.
Reduce the reference
Reduce the acceleration of
acceleration and try
the position reference using
operating the SERVO-
an EtherCAT command.
PACK.
Check excessive posi-
tion deviation alarm
Optimize the settings of
level (Pn520 (2520h) ×
Pn520 (2520h) and Pn51E
Pn51E (251Eh)/100) to
(251Eh).
see if it is set to an
appropriate value.
Turn the power supply to
the SERVOPACK OFF and
ON again. If an alarm still
–
occurs, the SERVOPACK
may be faulty. Replace the
SERVOPACK.
16.3 Warning Displays
16.3.2 Troubleshooting Warnings
Continued from previous page.
Reference
page 7-46
page 16-3
page 9-59
page 7-15
page 6-29
page 10-15
Correction Reference
–
page 9-23
–
page 9-8
–
Continued on next page.
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