YASKAWA Sigma-7 Series Product Manual page 131

Warning Number:
Possible Cause
Warning Name
The surrounding
temperature is too
high.
Operation was
performed under
an excessive load.
A failure occurred
A.93B:
in the SERVO-
Overheat Warning
PACK.
The temperature
detection circuit in
the Linear Servo-
motor is faulty or
the sensor
attached to the
machine is faulty.
The speed ripple
compensation
information stored
A.942: in the encoder
does not agree
Speed Ripple Com-
with the speed
pensation Informa-
ripple compensa-
tion Disagreement
tion information
stored in the
SERVOPACK.
A.94A:
An invalid param-
Data Setting Warn-
eter number was
ing 1 (Parameter
used.
Number Error)
The set com-
mand data was
A.94b:
clamped to the
Data Setting Warn-
minimum or maxi-
ing 2 (Out of Range)
mum value of the
setting range.
A.94C:
The calculation
Data Setting Warn-
result of the set-
ing 3 (Calculation
ting is not correct.
Error)
A.94d:
The parameter
Data Setting Warn- size set in the
ing 4 (Parameter command is not
Size) correct.
A.94E:
A latch mode error
Data Setting Warn-
was detected.
ing 5 (Latch Mode
Error)
Confirmation
Lower the surrounding tem-
Check the surrounding perature by improving the
temperature using a installation conditions of the
thermometer. Linear Servomotor or the
machine.
Use the accumulated
Reconsider the load and
load ratio to check the
operating conditions.
load during operation.
The SERVOPACK may be
– faulty. Replace the SERVO-
PACK.
The temperature detection
circuit in the Linear Servo-
motor may be faulty or the
sensor attached to the
–
machine may be faulty.
Replace the Linear Servo-
motor or repair the sensor
attached to the machine.
Reset the speed ripple
– compensation value on the
SigmaWin+.
Set Pn423 to n.1 (Do
not detect A.942 alarms).
– However, changing the set-
ting may increase the speed
ripple.
Set Pn423 to n.0
(Disable speed ripple com-
– pensation). However,
changing the setting may
increase the speed ripple.
Check the command
Use the correct parameter
that caused the warn-
number.
ing.
Check the command
Set the parameter within
that caused the warn-
the setting range.
ing.
Check the command
Set the parameter within
that caused the warn-
the setting range.
ing.
Check the command
Set the correct parameter
that caused the warn-
size.
ing.
Change the setting of
Pn850 or the LT_MOD data
for the LTMOD_ON com-
Check the command mand sent by the host con-
that caused the warn- troller to an appropriate
ing. value.
(This applies when using
the MECHATROLINK-II-
compatible profile.)
6.2 Warning Displays
6.2.2 Troubleshooting Warnings
Continued from previous page.
Correction Reference
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