71
Table 7-2 Operation Related Faults and Solutions
Phenome
na
Conditions
Possible reasons of fault
Actions
No
response
of keys
Part of the keys or
all the keys are
disabled
Keypad locked
In stop or operating state, keep
pressing FUNC/DATA key,
when pressing
▼
key three
times.
Power off the inverter and then
power on again
Panel’s cables are not well
connected
Check the wiring
Panel’s keys are damaged
Replay operation panel or seek
service
LED no
display
No LED
segmentilluminates
Not power on.
Power on
Keypad cable reverse
connected
Immediately remove the
keypad and connect it again
correctly. If the problem
persists, please connect our
technical support person.
Parameter
setting
cannot be
changed
Cannot be changed
during operating
Parameter modification
property is ×”
Settings of parameters can be
changed in stop status
Settings of part of
parameters cannot be
changed.
Set FP.01 to 1 or 2
Set FP.01 to 0
Parameter’s modification
property is *
The parameters cannot be
changed by user
No parameter
but“0.0.0.0.” is
displayed when
pressingPRG
User’s password is
required
Input correct user’s password
Seek service
Unexpect
ed stops
during
running
The inverter stops
automatically
without STOP
command. The
RUN indicator goes
out.
Alarm occurs
Find out the reason and reset.
Single cycle of PLC
finishes
Check PLC configuration
Interruption of the
communication between
the inverter and host or
flush mount faceplate
Check communication cables
and FB.02, FB.03 settings
Power failure
Check the power supply
Command input method
changed
Check the command input
method and corresponding
parameter
Positive/negative logic of
control terminal changed
Check F9.15.