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Alarms and warnings
14.2 Warnings
When a warning generates, the WNG output will turn ON. The motor will continue to operate.
Once the cause of the warning is removed, the WNG output will turn OFF automatically.
Present warnings can be checked using the OPX-2A or MEXE02.
The warning records of up to ten most recent warnings starting from the latest one can be checked and cleared.
Note
The warning records will also be cleared automatically by powering off the driver.
„ Descriptions of warnings
See page 80 for more information about the warning parameters.
Warning
Warning type
code
Excessive position
deviation warning
10
during current ON
Excessive position
deviation warning
12
during current OFF
Overheat
21
Overvoltage
22
Undervoltage
25
Overload
30
Overspeed
31
Abnormal operation
70
data
Electronic gear
71
setting error
−56−
Cause
• When the motor was in a state of current ON,
the deviation between the command position
and actual position exceeded the value set in
the parameter for overflow warning rotation
during current on [APP-5-04].
• The load is large or acceleration/ deceleration
rate is too short.
When the motor was in a state of current OFF,
the deviation between the command position
and actual position exceeded the value set
in the parameter for overflow rotation during
current off [APP-5-02]. (This warning is output
when the parameter for auto return [SyS-1-03]
is set to "Enable".)
The temperature inside the driver exceeded the
value set in the parameter for overheat warning
[APP-5-07].
• The voltage of the main power supply
exceeded the value set in the parameter for
overvoltage warning [APP-5-05].
• A large inertial load was operated.
• The main power supply voltage dropped from
the value set in the parameter for undervoltage
warning [APP-5-06].
• The main power was cut off momentarily or
the voltage became low.
• A load exceeding the peak torque was applied
for the time set in parameter for the overload
warning [APP-5-08] or longer.
• The load is large or acceleration/ deceleration
rate is too short.
The detected motor speed exceeded the value
set in the parameter for overspeed warning
[APP-5-09].
The CS input was changed when the motor was
in a state of current ON.
The traveled distance from the electrical home
exceeded the control range (2,147,483,648
pulses). [This alarm generates when the
application parameter for abnormal operation
data warning [APP-5-00] is set to "Enable".]
The resolution set by the electronic gear is
outside the specified range.
Remedial action
• Reduce the load or increase the
acceleration/deceleration rate
• If a torque limit is set using an extended
function, increase the setting value.
• Reduce the amount of rotation at current
OFF to the specified setting value or less.
Or, change the setting value.
• Turn the CLR input ON to clear the
position deviation.
Review the ventilation condition in the
enclosure.
• Check the input voltage of the main power
supply.
• If this alarm generates during operation,
decrease the inertia load (inertial load
10 times less than the rotor inertia) or
increase the acceleration/deceleration
rate.
Check the input voltage of the main power
supply.
• Reduce the load or increase the
acceleration/deceleration rate
• If the driver is in the current control mode,
increase the current limit value.
• Check if the electromagnetic brake is
released during operation.
• Check the electronic gear setting and
reduce the speed of the motor output shaft
to the value set in the parameter or less.
• If the motor is overshooting at the time of
acceleration, increase the acceleration/
deceleration rate.
Do not change the CS input when the
current is ON.
Turn the P-RESET input ON and set the
electrical home, again.
Set the "electronic gear" parameter correctly
so that the resolution is in a range of "100
to 10000 P/R."
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