44
Alarm
This driver has the alarm function to protect from temperature rise, poor connection, error in operation, and others.
If an alarm is generated, the ALARM-OUT output is turned OFF, and the motor stops.
At the same time, the alarm code is displayed on the operation panel, and the ALARM LED blinks in red.
(With the drivers for electromagnetic brake motor, the electromagnetic brake holds the motor shaft.)
Refer to the USER MANUAL for the information function that are output before an alarm is generated.
1. Alarm reset
Before resetting an alarm by one of the following methods, be sure to remove the cause of the alarm and ensure safety.
•
Turn the ALARM-RESET input ON. (The alarm will be reset at the ON edge of the input.)
•
Execute an alarm reset using the operation panel.
•
Execute the alarm reset using the
MEXE02
.
•
Turn on the power again.
Note
•
Some alarms cannot be reset other than turning on the power again.
Check with "3. Alarm lists."
•
Continuing the operation without removing the cause of the alarm may cause damage to equipment.
When an alarm is reset by the ALARM-RESET input
To reset an alarm, turn both the FWD input and the REV input OFF, and remove the cause of the alarm before turning the
ALARM-RESET input ON. If either the FWD input or the REV input is being ON, the ALARM-RESET input is disabled. (In the case of
the 3-wire mode, when both the START/STOP input and the RUN/BRAKE input are being ON, the ALARM-RESET input is disabled.)
When the alarm cannot be reset by the ALARM-RESET input, once turn o the driver power, and turn on the power again after the
CHARGE LED is turned o.
OUT output
ON
T input
ON
OFF
or operation
ON
OFF
tromagnetic
∗
Hold
Release
10 ms or more
10 ms or less
CW CW
Stop
Alarm generation
*
The electromagnetic brake will activate to hold the load at the moment an alarm generates.
(The action of the electromagnetic brake can be changed with the “Electromagnetic brake function at alarm” parameter. However, do not
change the parameter setting when using the motor in an application of vertical drive such as elevating equipment.)
2. Alarm history
Up to 10 generated alarms are saved in the non-volatile memory in order of the latest to oldest. The alarm history is not cleared
even if the power is shut o. The history can be checked and cleared by the following methods.
•
Operation panel: The alarm history can be checked and cleared with the monitor mode.
•
MEXE02
: The alarm history can be checked and cleared with the alarm monitor.
3. Alarm lists
Alarm Cause Remedial action
Reset by the
ALARM-RESET
Overcurrent
●
Excessive current was own through the
driver due to ground fault, etc.
●
A dierent combination in output powers for
the motor and the driver was used.
●
Check whether the wiring between the
driver and motor is damaged.
●
Match the output powers for the motor and
the driver.
Not possible
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