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Alarm, warning
Alarm
code
Alarm type
Reset
Motor
using the
excitation
ALM-RST
∗1
input
Cause
Remedial action
• Regeneration unit is not connected
correctly.
• Check the connection for the
thermostat output and TH input of the
regeneration unit.
• Regeneration unit was overheated • The allowable power consumption of
the regeneration unit was exceeded.
Regeneration extraordinarily.
Review the load condition and
unit overheat • The main power supply of the
driver was turned on before turning operating conditions.
on the external power supply of
• Turn on the main power supply of the
input signals.
driver after the external power supply
of input signals is turned on.
Software
overtravel
Not
possible
Excitation
off
Possible
Excitation
on
In single-motion operation, check to
When the "software overtravel"
see if the position exceeds the software
parameter is set to "enable," the
limit. In linked-motion operation, check
motor position reached the set value
to see if the result of linked position
of the software limit.
exceeds the software limit.
• Data of different directions was
linked in linked-motion operation.
• The operation data was linked five
data or more.
Operation
data error
• Positioning operation of the
operation speed 0 r/min was
performed.
Check the operation data.
• Positioning operation was
performed at the operation speed
0 r/min for the operation data No.7.
*1 When an alarm generates, the motor operates as follows.
Excitation off: When an alarm generates, the motor current will be cut off and the motor will lose its holding torque.
The electromagnetic brake will automatically actuate and hold the position when using the electromagnetic brake motor.
Excitation on: Even when an alarm is generated, the motor current will not be cut off and the motor excitation state will be continued.
2.2 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.
„„ Warning list
Warning
code
Warning type
Excessive
position
deviation
Cause
Remedial action
• When the motor was in excitation state, the deviation between
the command position and actual position at the motor output
shaft exceeded the value set in the "excessive position
Check the load condition.
deviation warning" parameter.
• The load is large or acceleration/deceleration time is too short.
Overvoltage
• The power supply voltage exceeded the value set in the
"overvoltage warning" parameter.
• Check the main power supply
voltage.
• A load exceeding the allowable gravitational capacity of
the motor was driven or sudden starting/stopping of a large
inertial load was performed.
• If this alarm generates during
operation, check the load condition.
• Connect the regeneration unit.
Overload
A load exceeding the value set in the "overload warning"
parameter was applied.
Check the load condition.
Operation
prohibited
When the FWD input or RVS input is being ON, the function
mode was changed from the test mode to other modes.
Turn the FWD input or RVS input
OFF.
„„ Warning records
Up to 10 generated warnings are saved in the RAM in order of the latest to oldest. Warning records stored in the RAM can be read or
cleared when performing any of the following items.
• Clear the warning records in the monitor mode of the operation panel.
• Read and clear the warning records using the MEXE02 or OPX-2A.
Note
The warning records will be cleared by turning off the driver power.
8 Inspection, troubleshooting and remedial actions
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