User manual

15 Alarms and warnings
−132−
15.2 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 data setter OPX-2A or the data setting software MEXE02.
You can also check the records of up to ten most recent warnings starting from the latest one, or clear the
warning records.
Note
You can also clear the warning records by turning off the driver power.
 Descriptions of warnings
Warning type
Warning
code
Cause Action
Excessive position
deviation
10 • The deviation between the command
position and actual position at the motor
output shaft exceeded the value set in the
excessive position deviation warning
parameter [APP-3-01].(Initial value: 9 rev)
• The load is large or the
acceleration/deceleration time is short.
• Reduce the load or increase the
acceleration/deceleration time.
• If the torque limit function is used,
increase the torque limit value.
Overheat 21 The internal temperature of the driver
exceeded the value set in the overheat
warning parameter [APP-3-04]. [Initial value:
80°C (176 °F)]
Review the ventilation condition in the
enclosure.
Overvoltage 22 • The DC voltage of the main power supply
exceeded the value set in the overvoltage
warning parameter [APP-3-02]. (Initial value:
390 V)
• A large inertial load was stopped abruptly, or
up/down operation was performed without
connecting a regeneration unit.
• Check the input voltage of the main
power supply.
• If this warning generates during
operation, reduce the load or
increase the
acceleration/deceleration time.
• If the internal regeneration resistor is
used, switch to an external
regeneration unit.
Main power supply 23 The S-ON input was turned ON when the
main power was cut off.
• Do not turn the S-ON input ON while
the main power is cut off.
• Check the S-ON signal logic.
Undervoltage 25 • The DC voltage of the main power supply
became lower than the value set in the
undervoltage warning parameter [APP-3-03].
(Initial value: 125 V)
• The main power was cut off momentarily or
the voltage became low.
Check the input voltage of the main
power supply.
Low battery voltage 27 The battery discharged and its voltage
dropped to 3.2 V or below.
Replace the battery.
Overload 30 • The generated torque exceeded the value
set in the overload warning parameter
[APP-3-05]. (Initial value: 90%)
• The load is large or the
acceleration/deceleration time is short.
• Reduce the load, or increase the
acceleration/deceleration time.
• Check the cable connection.
• Check if the electromagnetic brake is
released during operation.
Overspeed 31 The detected motor speed exceeded the
value set in the overspeed warning parameter
[APP-3-06].(Initial value: 5800 r/min)
• 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 speed is overshooting due to
insufficient gain adjustment, readjust
the gain.
Absolute position
loss
33 The battery or encoder was disconnected. Perform position preset.
Electronic gear
setting error
71 The resolution set by the electronic gear and
encoder output electronic gear became
outside the specified range.
Set the electronic gear and encoder
output electronic gear correctly, then
turn the power back on.