8-12
8-3 Troubleshooting
8
Troubleshooting
26 Overspeed
Occurs during high-
speed rotation.
• The speed command
input is too large.
• Set the command
pulse frequency to
500 kpps max.
• The setting for the
Electronic Gear Ratio
Numerator (Pn48 or
Pn49) is not
appropriate.
• Set Pn48 and Pn49 so
that the command
pulse frequency is
500 kpps max.
• The maximum number
of rotations is
exceeded due to
overshooting.
• Adjust the gain.
• Reduce the maximum
command speed.
• The encoder wiring is
incorrect.
• Correct the wiring
Occurs when torque limit
switching is used.
• The Overspeed
Detection Level
Setting (Pn73) has
been exceeded.
• If torque limit
switching is used,
correctly set the
allowable operating
speed for Pn73.
27
Electronic gear setting
error
Occurs when command
signal is input or com-
mand is input.
• The result of multiply-
ing the command
pulse by the electronic
gear ratio exceeded
80 Mpps.
Refer to 5-8 Electronic
Gear on page 5-16.
• Check and review the
command pulse
frequency and the
settings for the
Electronic Gear Ratio
parameters (Pn48 to
Pn4B).
34 Overrun limit error Occurs during operation.
• The Overrun Limit
Setting (Pn26) is ex-
ceeded during opera-
tion.
• Adjust the gain.
• Increase the setting
for Pn26.
• Set Pn26 to 0 to
disable the function.
36 Overrun limit error
Occurs when the power
supply is turned ON.
• There are data errors
in the parameters that
were read.
• Reset all parameters.
• The Servo Drive is
faulty.
• Replace the Servo
Drive.
37 Parameter corruption
Occurs when the power
supply is turned ON.
• The parameters that
were read are corrupt.
• Re
place
the Servo
Drive.
38
Drive prohibit input
error
Occurs when the Servo
Drive is turned ON or
during operation.
• The Forward Drive
Prohibit Input (POT)
and Reverse Drive
Prohibit Input (NOT)
were both OFF at the
same time.
• Correct the wiring.
• Replace the limit
sensor.
• Check whether the
power supply for
control is input
correctly.
• Check whether the
setting for Drive Pro-
hibit Input Selection
(Pn04) is correct.
39
Excessive analog
input 1
Occurs during operation.
• The voltage input to
pin 14 is too high.
• Lower the input
voltage.
• Change the value for
Pn71.
Alarm
code
Error Status when error occurs Cause Countermeasure
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