YASKAWA SGD7S series Product Manual page 167

Warning Number:
Possible Cause
Warning Name
A.95F:
An undefined
Command Warning
command was
6 (Undefined Com-
sent.
mand)
The MECHA-
TROLINK Com-
munications Cable
is not wired cor-
rectly.
A.960:
A MECHA-
MECHATROLINK
TROLINK data
Communications
reception error
Warning
occurred due to
noise.
A failure occurred
in the SERVO-
PACK.
For a 200-V SER-
VOPACK, the AC
power supply volt-
age dropped
below 140 V.
The power supply
voltage dropped
during operation.
A.971:
A momentary
Undervoltage
power interrup-
tion occurred.
The SERVOPACK
fuse is blown out.
A failure occurred
in the SERVO-
PACK.
A command that
A.97A: cannot be exe-
cuted in the cur-
Command Warning
rent phase was
7 (Phase Error)
sent.
The set com-
mand data was
A.97b:
clamped to the
Data Clamp Out of
minimum or maxi-
Range
mum value of the
setting range.
4.2 SERVOPACKs with MECHATROLINK-III Communications References
Confirmation
Check the command
that caused the warn-
ing.
Check the wiring con-
ditions.
Confirm the installation
conditions.
–
Measure the power
supply voltage.
Measure the power
supply voltage.
Measure the power
supply voltage.
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4.2.6 Troubleshooting Warnings
Continued from previous page.
Correction
Do not send undefined
commands.
Correct the MECHA-
TROLINK communications
cable wiring.
Implement the following
countermeasures against
noise.
• Check the MECHA-
TROLINK Communica-
tions Cable and FG wiring
and implement counter-
measures to prevent noise
from entering.
• Attach a ferrite core to the
MECHATROLINK Com-
munications Cable.
The SERVOPACK may be
faulty. Replace the SERVO-
PACK.
Set the power supply volt-
age within the specified
range.
Increase the power supply
capacity.
If you have changed the
setting of Pn509 (Momen-
tary Power Interruption Hold
Time), decrease the setting.
Replace the SERVOPACK
and connect a reactor.
The SERVOPACK may be
faulty. Replace the SERVO-
PACK.
Send the command after
the command conditions
are satisfied.
Set the command data
within the setting ranges.
Continued on next page.
Reference
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