Orientalmotor FE100 Operating Manual page 56

10 Troubleshooting and remedial actions
∗1 If the protective function is actuated while the motor is running, the alarm code on the
display will remain steady. If the protective function is actuated while the motor is stopped,
the alarm code will blink.
∗2 If the alarm cannot be reset when a motor with a built-in thermal protector is used, the
motor's thermal protector may not have been reset. In this case, force-cool the motor using
a fan or otherwise lower the motor temperature.
∗3 If the inverter still malfunctions after the power was turned off, and then on following a
circuit error, the internal circuit may have been damaged. Please contact the Oriental Motor
branch or sales office near you.
∗4 The ground-fault protection will actuate when the motor is started via generation of
ground-fault current while the inverter is receiving power. If the inverter-motor line is
shorted to the ground while the motor is running, large current will flow into the inverter,
prompting the overcurrent protection (AL20) or overvoltage protection (AL22) to be
actuated (These protective functions do not actuate if the line was already shorted to the
ground when the power was input. Always connect an earth-leakage breaker if ground fault
is anticipated).
∗5 In the case of a three-phase input inverter, if any one of the three power leads is missing,
the inverter's protective function may not work accurately under no load or small load.
Resetting an alarm
•
When a steady alarm code is displayed
Confirm that the RUN/STAND-BY switch is set to the STAND-BY side, or the X0
input is stopped if external input signal control is used, and then input an alarm reset
signal to reset the alarm. (For the ALARM RESET input, refer to "ALARM RESET
input" on p.35.)
An alarm can also be reset by turning off and then on the inverter power. In this case,
be sure to wait at least 1 minute after turning off the power, before turning it back on.
When resetting an alarm, always remove the cause of the alarm first.
•
Note
Resuming the operation without removing the cause may result in
damage.
The ALARM RESET input is enabled only when the motor is stopped.
•
•
When a blinking alarm code is displayed
Removing the cause of the alarm will automatically reset the alarm.
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