Alarms
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23
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7 Alarms
This product provides alarms (protective functions) to protect a motor and speed controller from temperature rise, poor
connection, error in operation and others.
If the protective function is activated, the speed controller shuts off the output power to the motor, and the motor will coast
to a stop.
At the same time, the alarm code blinks on the display of the front panel.
Although the display change using the ESC key or FUNCTION key on the panel is possible even when the alarm code is
displayed, the display will return to the alarm indication if a non-operation state continues more than 5 seconds.
Alarm list
Check the followings if the alarm code is displayed.
•
Motor overheat
•
Motor poor connection
●
The motor abnormally produced heat by some
reason, and a built-in overheat protection device
(thermal protector) of the motor was activated
(OPEN).
●
Disconnection or improper connection of the motor
power line of the motor cable.
•
Reduce the load.
•
Improve the operation condition such as
the acceleration time or deceleration time.
•
Check the motor cable or connection of
connector part.
•
Motor lock
•
Motor poor connection
●
The motor output shaft was locked for a minimum
of 5 seconds.
●
Disconnection or improper connection of the rate
generator lead wire of the motor cable.
•
Reduce the load.
•
Check the motor cable or connection of
connector part.
EEPROM error
●
The power supply was turned off while the data
setting or initialization is executed.
●
The stored data was damaged.
●
Data became no longer writable or readable.
•
Initialize the data.
•
If the alarm cannot be cleared even when
the power is cycled, contact your nearest
Oriental Motor sales office.
Prevention of operation
at power-on
*
●
The power supply was turned on while the
operation switch was set to the RUN side.
●
The power supply was turned on while the FWD
input or REV input was being ON.
•
If the operation switch which is setting to
the RUN side is set to the STAND-BY side,
the alarm will be reset.
•
If the FWD input or REV input which is
being ON is turned OFF, the alarm will be
reset.
*
If the "prevention of operation at power-on" parameter is set to disable, this alarm will not generate. (Initial setting: Enable)
•
"Motor overheat" alarm
Motors with an output power of 15 W to 90 W contain an automatic return type thermal protector in the motor windings.
If the motor internal temperature exceeds the specified value, the thermal protector will be activated (OPEN) and the "motor
overheat" alarm will be generated. Motors with an output power of 6 W are adopted impedance protection for overheat
protection so that the temperature will not rise above certain level.
Alarm reset
•
Before resetting an alarm by the following method, be sure to ensure safety with removing the cause of the alarm and setting
the operation switch to the STAND-BY side. The alarm can be reset if the power is cycled.
•
If you try to reset the alarm while the operation switch is set to the RUN side, "
Err
" is displayed for about 1 second.
Alarm generation
(Example: Motor lock)
Alarm reset
Rotation speed monitor
Pressing the setting dial
will move to the alarm
reset screen.
Set the operation switch to
the STAND-BY side before
pressing the setting dial.
Reset
Alarm
reset
When the motor is operated using external signals, turn the FWD input or REV input OFF before resetting the alarm.
"
Err
" is displayed if the alarm is reset while the signal is being ON.
Note
•
If the product does not operate properly after the power is cycled, the internal circuit may be damaged.
Contact your nearest Oriental Motor branch or sales office.
•
Continuing the operation without removing the cause of the alarm may result in damage to equipment.
