68
Symptoms
Conditions
Possible causes
Solutions
Under the three-wire control mode,
the terminal with the three-wire
operation control function is not
closed.
Set and close the three-wire operation control
terminal
Fault alarm occurs.
Troubleshoot
The virtual terminal function of the
host device is set improperly.
Cancel the virtual terminal function of the host
device or set the function properly through the
host device, or modify the P09.15 setting
The forward/reverse logic of the
input terminal is set improperly.
Check the P09.14 setting
When the
drive is
started, the
report -LU-
runs
immediately.
The thyristor or the
contactor disconnects
and the drive load is
large.
Since the thyristor or the contactor
is not closed, when the drive runs
with large load, the DC bus voltage
of the main circuit will drop; the
drive will display -LU- first and will
not display Er.JCF fault.
Run the drive after the thyristor or the
contactor is closed completely
